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Drinking water in 53804

For this postcode the responsible water supplier publishes several supply zones. Which of them serves an individual address is not published — below are the values of the zone with the most documented parameters, the remaining 11 underneath. The water supplier publishes 1 further local networks that cannot be clearly assigned to this postcode — they are listed on the water supplier page.

How to read the share of the parametric value

12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.

Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
3.5 °dH
Hardness range weich
Key values Much
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean · Much
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Much
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean · Much
Sodium 5,4 mg/l 200 mg/l
3 %
Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (35 — most recent value per parameter)

Microbiology (2)

Microbiology – Much
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Much
Intestinal enterococci 0 /100 ml 0/100 ml Mean · Much

Chemical parameters (10)

Chemical parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Arsenic < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Copper < 0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean · Much
Fluoride < 0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean · Much
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Mercury < 0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Much
Nickel < 0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean · Much
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean · Much
Nitrite < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Much
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean · Much
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (16)

Indicator parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Much
Ammonium < 0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean · Much
Chloride 12,1 mg/l 250 mg/l
5 %
Mean · Much
Coliform bacteria 0 /100 ml 0/100 ml Mean · Much
Colony count 22 °C < 1 / 1ml
below limit of quantification
ohne anormale Veränderung Mean · Much
Colony count 36 °C < 1 / 1ml
below limit of quantification
ohne anormale Veränderung Mean · Much
Colour < 0,1 1/m
below limit of quantification
0.5 m⁻¹ Mean · Much
Conductivity (25 °C) 19,6 mS/m 2,790 µS/cm Mean · Much
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean · Much
Manganese < 0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Much
pH 8,2 6,5–9,5 Mean · Much
Sodium 5,4 mg/l 200 mg/l
3 %
Mean · Much
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean · Much
Temperature 13,4 oC Maximum · Much
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean · Much
Turbidity 0,05 FNU 1 NTU Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (7)

Further parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean · Much
Hardness range (WRMG) weich Mean · Much
Magnesium 2,7 mg/l Mean · Much
Phosphate < 0,03 mg/l
below limit of quantification
Mean · Much
Potassium <1,0 mg/l
below limit of quantification
Mean · Much
Silicate / silicic acid 3,1 mg/l Mean · Much
Total hardness 3,5 °dH Mean · Much

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.rhein-sieg-netz.de/fileadmin/Dateien/Downloads/RSN/Trinkwasser/136_rhenag_-Trinkwasser_Analyse_im_Versorgungsgebiet_2024_2025.pdf · 12/2025 · 2025* (Mittelwerte); 20.11.2025 (Einzelmessung) · retrieved on 08/07/2026
Show 11 more supply zones in this postcode

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 03/01/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.

Water hardness
4.4 °dH
Hardness range weich
Key values Much
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12,3 mg/l 50 mg/l
25 %
Mean · Much
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Much
Sulphate 11,2 mg/l 250 mg/l
4 %
Mean · Much
Sodium 5,7 mg/l 200 mg/l
3 %
Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (34 — most recent value per parameter)

Microbiology (2)

Microbiology – Much
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Much
Intestinal enterococci 0 /100 ml 0/100 ml Mean · Much

Chemical parameters (10)

Chemical parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Arsenic < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Copper < 0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean · Much
Fluoride < 0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean · Much
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Much
Mercury < 0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Much
Nickel < 0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean · Much
Nitrate 12,3 mg/l 50 mg/l
25 %
Mean · Much
Nitrite < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Much
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean · Much
Trihalomethanes — Total 0,006 mg/l 50 µg/l
12 %
Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (15)

Indicator parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Much
Ammonium < 0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean · Much
Chloride 12,8 mg/l 250 mg/l
5 %
Mean · Much
Coliform bacteria 0 /100 ml 0/100 ml Mean · Much
Colony count 22 °C < 1 / 1ml
below limit of quantification
ohne anormale Veränderung Mean · Much
Colony count 36 °C < 1 / 1ml
below limit of quantification
ohne anormale Veränderung Mean · Much
Colour < 0,1 1/m
below limit of quantification
0.5 m⁻¹ Mean · Much
Iron 0,021 mg/l 0.2 mg/l
11 %
Mean · Much
Manganese < 0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Much
pH 8,2 6,5–9,5 Mean · Much
Sodium 5,7 mg/l 200 mg/l
3 %
Mean · Much
Sulphate 11,2 mg/l 250 mg/l
4 %
Mean · Much
Temperature 12,1 °C Maximum · Much
Total organic carbon (TOC) 1,5 mg/l ohne anormale Veränderung Mean · Much
Turbidity 0,06 FNU 1 NTU Mean · Much

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (7)

Further parameters – Much
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean · Much
Hardness range (WRMG) weich Mean · Much
Magnesium 2,9 mg/l Mean · Much
Phosphate < 0,03 mg/l
below limit of quantification
Mean · Much
Potassium <1,0 mg/l
below limit of quantification
Mean · Much
Silicate / silicic acid 3,5 mg/l Mean · Much
Total hardness 4,4 °dH Mean · Much

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.much.de/fileadmin/redaktion/bilder/gemeindewerke/rhenag_-Trinkwasser_Analyse_im_Versorgungsgebiet_2022_2023.pdf · 12/2023 · 2023 (Mittelwerte Siegburg/Much); 03.01.2024 (Einzelmessung Hennef-Kurenbach/Hennef-Liesberg) · retrieved on 13/07/2026

Städte Siegburg, Hennef u. Königswinter

rhenag

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4,7 ± 0,3 °dH
Hardness range Weich
Key values Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 10 ± 1 mg/l 50 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Sulphate 25 ± 0,6 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Sodium 10,8 ± 1,0 mg/l 200 mg/l Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (35 — most recent value per parameter)

Microbiology (2)

Microbiology – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Intestinal enterococci 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter

Chemical parameters (10)

Chemical parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Arsenic < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Copper < 0,010 mg/l
below limit of quantification
2 mg/l
< 0.5 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Fluoride < 0,1 mg/l
below limit of quantification
1.5 mg/l
< 7 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Mercury < 0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Nickel < 0,005 mg/l
below limit of quantification
20 µg/l
< 25 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Nitrate 10 ± 1 mg/l 50 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Nitrite < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean · Städte Siegburg, Hennef u. Königswinter
Trihalomethanes — Total 0 mg/l 50 µg/l
0 %
Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (16)

Indicator parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,005 mg/l
below limit of quantification
0.2 mg/l
< 3 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Ammonium < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Chloride 20 ± 2 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Coliform bacteria 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Colony count 22 °C 2 / 1ml ohne anormale Veränderung Maximum · Städte Siegburg, Hennef u. Königswinter
Colony count 36 °C 1 / 1ml ohne anormale Veränderung Maximum · Städte Siegburg, Hennef u. Königswinter
Colour 0,02 ± 0,01 1/m 0.5 m⁻¹ Mean · Städte Siegburg, Hennef u. Königswinter
Conductivity (25 °C) 24 ± 2 mS/m 2,790 µS/cm Mean · Städte Siegburg, Hennef u. Königswinter
Iron < 0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Manganese < 0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
pH 8,2 ± 0,1 6,5–9,5 Mean · Städte Siegburg, Hennef u. Königswinter
Sodium 10,8 ± 1,0 mg/l 200 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Sulphate 25 ± 0,6 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Temperature 8,8 ± 2,0 oC Mean · Städte Siegburg, Hennef u. Königswinter
Total organic carbon (TOC) 1,0 ± 0,1 mg/l ohne anormale Veränderung Mean · Städte Siegburg, Hennef u. Königswinter
Turbidity < 0,10 FNU
below limit of quantification
1 NTU Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (7)

Further parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Calcium 25,3 ± 1,5 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Hardness range (WRMG) Weich Mean · Städte Siegburg, Hennef u. Königswinter
Magnesium 5,2 ± 0,3 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Phosphate < 0,01 mg/l
below limit of quantification
Mean · Städte Siegburg, Hennef u. Königswinter
Potassium 2,1 ± 0,1 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Silicate / silicic acid 2,7 ± 0,3 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Total hardness 4,7 ± 0,3 °dH Mean · Städte Siegburg, Hennef u. Königswinter

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.rhein-sieg-netz.de/fileadmin/Dateien/Downloads/RSN/Trinkwasser/136_rhenag_-Trinkwasser_Analyse_im_Versorgungsgebiet_2024_2025.pdf · 12/2025 · 2025* (Mittelwerte); 20.11.2025 (Einzelmessung) · retrieved on 08/07/2026

Städte Siegburg, Hennef u. Königswinter

rhenag

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

These values are more than a year old. The most recent analysis the water supplier has published for this zone dates from 03/01/2024. We have no newer values — which is why we show the latest available ones rather than none at all. They say nothing about how the water has changed since then.

Water hardness
4,8 ± 0,2 °dH
Hardness range weich
Key values Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 12 ± 1 mg/l 50 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Sulphate 26 ± 1,0 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Sodium 10,7 ± 1,2 mg/l 200 mg/l Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (34 — most recent value per parameter)

Microbiology (2)

Microbiology – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Intestinal enterococci 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter

Chemical parameters (10)

Chemical parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Arsenic < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Copper < 0,010 mg/l
below limit of quantification
2 mg/l
< 0.5 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Fluoride < 0,1 mg/l
below limit of quantification
1.5 mg/l
< 7 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Lead < 0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Mercury < 0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Nickel < 0,005 mg/l
below limit of quantification
20 µg/l
< 25 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Nitrate 12 ± 1 mg/l 50 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Nitrite < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean · Städte Siegburg, Hennef u. Königswinter
Trihalomethanes — Total 0 mg/l 50 µg/l
0 %
Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Indicator parameters (15)

Indicator parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,005 mg/l
below limit of quantification
0.2 mg/l
< 3 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Ammonium < 0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Chloride 22 ± 1 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Coliform bacteria 0 /100 ml 0/100 ml Mean · Städte Siegburg, Hennef u. Königswinter
Colony count 22 °C 4 / 1ml ohne anormale Veränderung Maximum · Städte Siegburg, Hennef u. Königswinter
Colony count 36 °C 2 / 1ml ohne anormale Veränderung Maximum · Städte Siegburg, Hennef u. Königswinter
Colour 0,02 ± 0,01 1/m 0.5 m⁻¹ Mean · Städte Siegburg, Hennef u. Königswinter
Iron < 0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean · Städte Siegburg, Hennef u. Königswinter
Manganese < 0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean · Städte Siegburg, Hennef u. Königswinter
pH 8,3 ± 0,1 6,5–9,5 Mean · Städte Siegburg, Hennef u. Königswinter
Sodium 10,7 ± 1,2 mg/l 200 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Sulphate 26 ± 1,0 mg/l 250 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Temperature 9,0 ± 1,9 °C Mean · Städte Siegburg, Hennef u. Königswinter
Total organic carbon (TOC) 1,0 ± 0,1 mg/l ohne anormale Veränderung Mean · Städte Siegburg, Hennef u. Königswinter
Turbidity < 0,10 FNU
below limit of quantification
1 NTU Mean · Städte Siegburg, Hennef u. Königswinter

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (7)

Further parameters – Städte Siegburg, Hennef u. Königswinter
Parameter Value Parametric value Share of the parametric value Reference
Calcium 25,2 ± 1,2 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Hardness range (WRMG) weich Mean · Städte Siegburg, Hennef u. Königswinter
Magnesium 5,3 ± 0,3 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Phosphate < 0,01 mg/l
below limit of quantification
Mean · Städte Siegburg, Hennef u. Königswinter
Potassium 2,3 ± 0,1 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Silicate / silicic acid 2,6 ± 0,3 mg/l Mean · Städte Siegburg, Hennef u. Königswinter
Total hardness 4,8 ± 0,2 °dH Mean · Städte Siegburg, Hennef u. Königswinter

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.much.de/fileadmin/redaktion/bilder/gemeindewerke/rhenag_-Trinkwasser_Analyse_im_Versorgungsgebiet_2022_2023.pdf · 12/2023 · 2023 (Mittelwerte Siegburg/Much); 03.01.2024 (Einzelmessung Hennef-Kurenbach/Hennef-Liesberg) · retrieved on 13/07/2026

Wasserwerk Erlenhagen

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.5 °dH
Hardness range soft
Key values Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 MPN/100 ml 0/100 ml Single value
Show all recorded parameters (49 — most recent value per parameter)

Microbiology (2)

Microbiology – Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 MPN/100 ml 0/100 ml Single value
Intestinal enterococci 0 KBE/100 ml 0/100 ml Single value

Chemical parameters (12)

Chemical parameters – Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,00010 mg/l
below limit of quantification
3 µg/l
< 3 % *
Single value
Benzene <0,00010 mg/l
below limit of quantification
1 µg/l
< 10 % *
Single value
Benzo(a)pyrene <0,000010 mg/l
below limit of quantification
10 ng/l
< 100 % *
Single value
Chromium <0,00050 mg/l
below limit of quantification
25 µg/l
< 2 % *
Single value
Cyanide <0,0050 mg/l
below limit of quantification
50 µg/l
< 10 % *
Single value
Dibromoacetic acid <0,001 mg/l
below limit of quantification
Single value
Dichloroacetic acid 0,0018 mg/l Single value
Monobromoacetic acid <0,001 mg/l
below limit of quantification
Single value
Monochloroacetic acid <0,001 mg/l
below limit of quantification
Single value
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Single value
Trichloroacetic acid <0,001 mg/l
below limit of quantification
Single value
Trihalomethanes — Total 0,0058 mg/l 50 µg/l
12 %
Single value

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (18)

PFAS – Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
Perfluorobutane sulfonic acid (PFBS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorobutanoic acid (PFBA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorodecanoic acid (PFDA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorododecane sulfonic acid (PFDoDS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorododecanoic acid (PFDoDA) <0,000001 mg/l
below limit of quantification
Single value
Perfluoroheptane sulfonic acid (PFHpS) <0,000001 mg/l
below limit of quantification
Single value
Perfluoroheptanoic acid (PFHpA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorohexane sulfonic acid (PFHxS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorohexanoic acid (PFHxA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorononane sulfonic acid (PFNS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorononanoic acid (PFNA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorooctanesulfonic acid (PFOS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorooctanoic acid (PFOA) <0,000001 mg/l
below limit of quantification
Single value
Perfluoropentanesulfonic acid (PFPeS) <0,000001 mg/l
below limit of quantification
Single value
Perfluoropentanoic acid (PFPeA) <0,000001 mg/l
below limit of quantification
Single value
Perfluorotridecanesulfonic acid (PFTrDS) <0,000001 mg/l
below limit of quantification
Single value
Perfluorotridecanoic acid (PFTrDA) <0,000001 mg/l
below limit of quantification
Single value
Perfluoroundecanoic acid (PFUnDA) <0,000001 mg/l
below limit of quantification
Single value

Indicator parameters (15)

Indicator parameters – Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Single value
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Single value
Clostridium perfringens (including spores) 0 KBE/100 ml 0/100 ml Single value
Coliform bacteria 0 MPN/100 ml 0/100 ml Single value
Colony count 22 °C 0 KBE/ml ohne anormale Veränderung Single value
Colony count 36 °C 0 KBE/ml ohne anormale Veränderung Single value
Iron 0,020 mg/l 0.2 mg/l
10 %
Single value
Manganese <0,0050 mg/l
below limit of quantification
50 µg/l
< 10 % *
Single value
Odour kein ungewöhnlicher Geruch für den Verbraucher annehmbar Single value
pH 8,2 6,5–9,5 Single value
Taste o.B. für den Verbraucher annehmbar Single value
Temperature 5,5 °C Single value
Threshold odour number (TON) <1 TON
below limit of quantification
Single value
Total organic carbon (TOC) 2,5 mg/l ohne anormale Veränderung Single value
Turbidity 0,05 NTU 1 NTU Single value

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (2)

Further parameters – Wasserwerk Erlenhagen
Parameter Value Parametric value Share of the parametric value Reference
Copper quotient 9,2 Single value
Total hardness 4,5 °dH Single value

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

bergneustadt gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Single value

Further parameters (10)

Further parameters – bergneustadt gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

gummersbach gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – gummersbach gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

lindlar gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – lindlar gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

nuembrecht gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – nuembrecht gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.aggerverband.de/files/assets/trinkwasser/qualitaetskontrolle/JMW_2025.pdf · Jahresmittelwert 2025 · retrieved on 11/07/2026

reichshof gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – reichshof gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

wiehl gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 13,4 °C Maximum
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – wiehl gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Source: https://www.aggerverband.de/files/assets/trinkwasser/qualitaetskontrolle/JMW_2025.pdf · Jahresmittelwert 2025 · retrieved on 11/07/2026

waldbroel gesamt

Aggerverband

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness
4.4 °dH
Hardness range soft
Key values waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (61 — most recent value per parameter)

Microbiology (3)

Microbiology – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 Anzahl/100 ml 0/100 ml Mean
Intestinal enterococci 0 KBE/100 ml 0/100 ml Mean
Somatic coliphages <2 PFU/100 ml
below limit of quantification
50/100 ml
UBA guide value
Mean

For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.

Chemical parameters (25)

Chemical parameters – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Antimony <0,0001 mg/l
below limit of quantification
5 µg/l
< 2 % *
Mean
Arsenic <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Benzene <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Benzo(a)pyrene <0,00001 mg/l
below limit of quantification
10 ng/l
< 100 % *
Mean
Bisphenol A <0,00003 mg/l
below limit of quantification
2.5 µg/l
< 1 % *
Mean
Boron 0,008 mg/l 1 mg/l
0.8 %
Mean
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Cadmium <0,0001 mg/l
below limit of quantification
3 µg/l
< 3 % *
Mean
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Mean
Copper <0,005 mg/l
below limit of quantification
2 mg/l
< 0.3 % *
Mean
Cyanide <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Fluoride <0,05 mg/l
below limit of quantification
1.5 mg/l
< 3 % *
Mean
Haloacetic acids (HAA) <0,0060 mg/l
below limit of quantification
Mean
Lead <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Mean
Microcystin-LR <0,00005 mg/l
below limit of quantification
Mean
Nickel <0,001 mg/l
below limit of quantification
20 µg/l
< 5 % *
Mean
Nitrate 6,8 mg/l 50 mg/l
14 %
Mean
Nitrite <0,01 mg/l
below limit of quantification
0.5 mg/l
< 2 % *
Mean
Polycyclic aromatic hydrocarbons 0 mg/l 0.1 µg/l
0 %
Mean
Selenium <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Mean
Trihalomethanes — Total 0,005 mg/l 50 µg/l
10 %
Mean
Uranium <0,0001 mg/l
below limit of quantification
10 µg/l
< 1 % *
Mean
Vinyl chloride <0,0001 mg/l
below limit of quantification
0.5 µg/l
< 20 % *
Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (1)

PFAS – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Sum of PFAS 0 mg/l Mean

Indicator parameters (21)

Indicator parameters – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,010 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Mean
Ammonium <0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Mean
Calcite dissolution capacity 0,37 mg/l 5 mg/l CaCO3 Mean
Chloride 12,1 mg/l 250 mg/l
5 %
Mean
Clostridium perfringens (including spores) 0 Anzahl/100 ml 0/100 ml Mean
Coliform bacteria 0 Anzahl/100 ml 0/100 ml Mean
Colony count 22 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colony count 36 °C <1 KBE/ml
below limit of quantification
ohne anormale Veränderung Mean
Colour <0,1 m-1
below limit of quantification
0.5 m⁻¹ Mean
Conductivity (25 °C) 196 µS/cm 2,790 µS/cm Mean
Iron 0,015 mg/l 0.2 mg/l
8 %
Mean
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Mean
Odour ohne Befund für den Verbraucher annehmbar Mean
Oxidisability <0,5 mg/l
below limit of quantification
5 mg/l O2 Mean
pH 8,2 pH-Einheiten 6,5–9,5 Mean
Sodium 5,4 mg/l 200 mg/l
3 %
Mean
Sulphate 11,8 mg/l 250 mg/l
5 %
Mean
Taste ohne Befund für den Verbraucher annehmbar Mean
Temperature 4,1 - 13,4 °C Mean
Total organic carbon (TOC) 1,1 mg/l ohne anormale Veränderung Mean
Turbidity 0,05 NTU 1 NTU Mean

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Radiology (1)

Radiology – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Radon-222 <10 Bq/l
below limit of quantification
100 Bq/l Mean

Further parameters (10)

Further parameters – waldbroel gesamt
Parameter Value Parametric value Share of the parametric value Reference
Calcium 26,9 mg/l Mean
Carbonate hardness 3,5 °dH Mean
Copper quotient 10,1 Mean
Lithium <0,10 mg/l
below limit of quantification
Mean
Magnesium 2,7 mg/l Mean
Phosphate <0,03 mg/l
below limit of quantification
Mean
Potassium <1,0 mg/l
below limit of quantification
Mean
Silicate / silicic acid 3,1 mg/l Mean
Total hardness 0,78 mmol/l Mean
Zinc <0,005 mg/l
below limit of quantification
Mean

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Frequent questions about postcode 53804

How hard is the water in Postcode 53804?
rhenag publishes a total hardness of 3.5 °dH for the supply zone Much (hardness range weich). The hardness range is a classification under the German Detergents and Cleaning Products Act (soft below 8,4 °dH, medium 8,4 to 14 °dH, hard above that) and not a quality verdict — it indicates how much calcium and magnesium is dissolved in the water. Basis: 12/2025, retrieved on 08/07/2026.
How much nitrate is in the drinking water in Postcode 53804?
rhenag publishes a nitrate value of 6,8 mg/l for the supply zone Much. The statutory parametric value is 50 mg/l; the measured value represents 14 % of the parametric value. Basis: 12/2025, retrieved on 08/07/2026.
Who supplies the drinking water in Postcode 53804?
rhenag. The values shown here come from the supply zone Much and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.

General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.