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Drinking water in Nörvenich

4 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.

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.

Key values Wasserwerk Embken
Parameter Value Parametric value Share of the parametric value Reference
Sulphate 64,0 mg/l 250 mg/l
26 %
Single value · Wasserwerk Embken
Sodium 8,0 mg/l 200 mg/l
4 %
Single value · Wasserwerk Embken
Show all recorded parameters (7 — most recent value per parameter)

Indicator parameters (3)

Indicator parameters – Wasserwerk Embken
Parameter Value Parametric value Share of the parametric value Reference
Chloride 28,0 mg/l 250 mg/l
11 %
Single value · Wasserwerk Embken
Sodium 8,0 mg/l 200 mg/l
4 %
Single value · Wasserwerk Embken
Sulphate 64,0 mg/l 250 mg/l
26 %
Single value · Wasserwerk Embken

Further parameters (4)

Further parameters – Wasserwerk Embken
Parameter Value Parametric value Share of the parametric value Reference
Calcium 77,4 mg/l Single value · Wasserwerk Embken
Hydrogen carbonate 346,6 mg/l Single value · Wasserwerk Embken
Magnesium 44,8 mg/l Single value · Wasserwerk Embken
Potassium 3,1 mg/l Single value · Wasserwerk Embken

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://neffeltal.de/wasseranalyse-und-haertebereich/ · Stand der Zusammensetzungsdaten (o. a. Daten): 31.03.2026; Stand der Härtedaten (o. a. Daten): 31.03.2025 · retrieved on 13/07/2026

Postcodes in this zone: 52388

Show 3 more supply zones

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

Key values Wasserwerk Lüxheim
Parameter Value Parametric value Share of the parametric value Reference
Sulphate 30,0 mg/l 250 mg/l
12 %
Single value · Wasserwerk Lüxheim
Sodium 18,9 mg/l 200 mg/l
9 %
Single value · Wasserwerk Lüxheim
Show all recorded parameters (7 — most recent value per parameter)

Indicator parameters (3)

Indicator parameters – Wasserwerk Lüxheim
Parameter Value Parametric value Share of the parametric value Reference
Chloride 29,0 mg/l 250 mg/l
12 %
Single value · Wasserwerk Lüxheim
Sodium 18,9 mg/l 200 mg/l
9 %
Single value · Wasserwerk Lüxheim
Sulphate 30,0 mg/l 250 mg/l
12 %
Single value · Wasserwerk Lüxheim

Further parameters (4)

Further parameters – Wasserwerk Lüxheim
Parameter Value Parametric value Share of the parametric value Reference
Calcium 62,8 mg/l Single value · Wasserwerk Lüxheim
Hydrogen carbonate 244,2 mg/l Single value · Wasserwerk Lüxheim
Magnesium 19,5 mg/l Single value · Wasserwerk Lüxheim
Potassium 3,4 mg/l Single value · Wasserwerk Lüxheim

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://neffeltal.de/wasseranalyse-und-haertebereich/ · Stand der Zusammensetzungsdaten (o. a. Daten): 31.03.2026; Stand der Härtedaten (o. a. Daten): 31.03.2025 · retrieved on 13/07/2026

Postcodes in this zone: 52388

WW Dirmerzheim: Reinwassersammelleitung h. den Filtern

RWE Power AG

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 21/03/2025. 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.

Key values WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
Parameter Value Parametric value Share of the parametric value Reference
Nitrate < 0,7 (± 0,1) mg/l
below limit of quantification
50 mg/l
< 1 % *
Single value
Lead < 2,5 (± 0,3) µg/l
below limit of quantification
10 µg/l
< 25 % *
Single value
Escherichia coli (E. coli) 0 (± 0) KBE/100 ml 0/100 ml Single value
Sulphate 173 (± 20,9) mg/l 250 mg/l Single value
Sodium 15,7 (± 1,0) mg/l 200 mg/l 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.

Show all recorded parameters (87 — most recent value per parameter)

Microbiology (2)

Microbiology – WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 (± 0) KBE/100 ml 0/100 ml Single value
Intestinal enterococci 0 (± 0) KBE/100 ml 0/100 ml Single value

Chemical parameters (62)

Chemical parameters – WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane < 0,5 µg/l
below limit of quantification
3 µg/l
< 17 % *
Single value
2,6-Dichlorobenzamide (BAM) n.b. µg/l
not determined
Single value
Acrylamide < 0,025 µg/l
below limit of quantification
0.1 µg/l
< 25 % *
Single value
Antimony < 2,0 (± 0,6) µg/l
below limit of quantification
5 µg/l
< 40 % *
Single value
Arsenic < 0,5 (± 0,1) µg/l
below limit of quantification
10 µg/l
< 5 % *
Single value
Atrazine < 0,025 µg/l
below limit of quantification
Single value
Benzene < 0,25 µg/l
below limit of quantification
1 µg/l
< 25 % *
Single value
Benzo(a)pyrene < 1,0 ng/l
below limit of quantification
10 ng/l
< 10 % *
Single value
Benzo(b)fluoranthene < 1,0 ng/l
below limit of quantification
Single value
Benzo(ghi)perylene < 1,0 ng/l
below limit of quantification
Single value
Benzo(k)fluoranthene < 1,0 ng/l
below limit of quantification
Single value
Bisphenol A n.b. mg/l
not determined
2.5 µg/l Single value
Boron < 0,02 (± 0,01) mg/l
below limit of quantification
1 mg/l
< 2 % *
Single value
Bromacil < 0,025 µg/l
below limit of quantification
Single value
Bromate < 0,005 (± 0,002) mg/l
below limit of quantification
10 µg/l
< 50 % *
Single value
Cadmium < 0,1 (± 0,1) µg/l
below limit of quantification
3 µg/l
< 3 % *
Single value
Carbofuran < 0,025 µg/l
below limit of quantification
Single value
Chloridazon < 0,025 µg/l
below limit of quantification
Single value
Chlorotoluron < 0,025 µg/l
below limit of quantification
Single value
Chromium < 1,0 (± 0,2) µg/l
below limit of quantification
25 µg/l
< 4 % *
Single value
Copper < 0,2 (± 0,1) µg/l
below limit of quantification
2 mg/l
< < 0.1 % *
Single value
Cyanazine n.b. µg/l
not determined
Single value
Cyanide < 0,02 (± 0,01) mg/l
below limit of quantification
50 µg/l
< 40 % *
Single value
Desethylatrazine < 0,025 µg/l
below limit of quantification
Single value
Desisopropylatrazine < 0,025 µg/l
below limit of quantification
Single value
Diuron < 0,025 µg/l
below limit of quantification
Single value
Epichlorohydrin < 0,03 µg/l
below limit of quantification
0.1 µg/l
< 30 % *
Single value
Ethofumesate < 0,025 µg/l
below limit of quantification
Single value
Fenuron n.b. µg/l
not determined
Single value
Flufenacet n.b. µg/l
not determined
Single value
Fluoride 0,08 (± 0,01) mg/l 1.5 mg/l Single value
Hexazinone < 0,025 µg/l
below limit of quantification
Single value
Indeno(1,2,3-cd)pyrene < 1,0 ng/l
below limit of quantification
Single value
Isoproturon < 0,025 µg/l
below limit of quantification
Single value
Lead < 2,5 (± 0,3) µg/l
below limit of quantification
10 µg/l
< 25 % *
Single value
Mercury 0,02 (± 0) µg/l 1 µg/l Single value
Metalaxyl n.b. µg/l
not determined
Single value
Metamitron n.b. µg/l
not determined
Single value
Metazachlor < 0,025 µg/l
below limit of quantification
Single value
Methabenzthiazuron < 0,025 µg/l
below limit of quantification
Single value
Metobromuron < 0,025 µg/l
below limit of quantification
Single value
Metolachlor < 0,025 µg/l
below limit of quantification
Single value
Metoxuron < 0,025 µg/l
below limit of quantification
Single value
Metribuzin < 0,025 µg/l
below limit of quantification
Single value
Nickel < 2,0 (± 0,3) µg/l
below limit of quantification
20 µg/l
< 10 % *
Single value
Nitrate < 0,7 (± 0,1) mg/l
below limit of quantification
50 mg/l
< 1 % *
Single value
Nitrite < 0,02 (± 0,01) mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Single value
Pesticides — Total n.b. µg/l
not determined
0.5 µg/l Single value
Polycyclic aromatic hydrocarbons n.b. ng/l
not determined
0.1 µg/l Single value
Prometryn n.b. µg/l
not determined
Single value
Propazine < 0,025 µg/l
below limit of quantification
Single value
Propiconazole n.b. µg/l
not determined
Single value
Selenium < 3,0 (± 0,6) µg/l
below limit of quantification
10 µg/l
< 30 % *
Single value
Simazine < 0,025 µg/l
below limit of quantification
Single value
Tebuconazole < 0,025 µg/l
below limit of quantification
Single value
Terbuthylazine < 0,025 µg/l
below limit of quantification
Single value
Terbutryn n.b. µg/l
not determined
Single value
Tetrachloroethene < 0,5 µg/l
below limit of quantification
Single value
Triadimenol n.b. µg/l
not determined
Single value
Trichloroethene < 0,5 µg/l
below limit of quantification
Single value
Uranium < 0,1 (± 0,1) µg/l
below limit of quantification
10 µg/l
< 1 % *
Single value
Vinyl chloride < 0,5 µg/l
below limit of quantification
0.5 µg/l
< 100 % *
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.

Indicator parameters (15)

Indicator parameters – WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 0,05 (± 0,01) mg/l
below limit of quantification
0.2 mg/l
< 25 % *
Single value
Ammonium < 0,10 (± 0,02) mg/l
below limit of quantification
0.5 mg/l
< 20 % *
Single value
Calcite dissolution capacity -8,4 (± 5) mg/l 5 mg/l CaCO3 Single value
Chloride 50,7 (± 2,6) mg/l 250 mg/l Single value
Coliform bacteria 0 (± 0) KBE/100 ml 0/100 ml Single value
Colour < 0,1 (± 0,1) 1/m
below limit of quantification
0.5 m⁻¹ Single value
Iron < 0,02 (± 0,01) mg/l
below limit of quantification
0.2 mg/l
< 10 % *
Single value
Manganese < 0,02 (± 0,01) mg/l
below limit of quantification
50 µg/l
< 40 % *
Single value
Odour geruchlos für den Verbraucher annehmbar Single value
pH 7,5 (± 0,1) 6,5–9,5 Single value
Sodium 15,7 (± 1,0) mg/l 200 mg/l Single value
Sulphate 173 (± 20,9) mg/l 250 mg/l Single value
Taste geschmacklos für den Verbraucher annehmbar Single value
Temperature 14,0 (± 0,7) °C Single value
Total organic carbon (TOC) < 0,8 (± 0,1) mg/l
below limit of quantification
ohne anormale Veränderung 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 (8)

Further parameters – WW Dirmerzheim: Reinwassersammelleitung h. den Filtern
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 2,85 (± 0,13) mmol/l Single value
Base capacity to pH 8.2 0,16 (± 0,09) mmol/l Single value
Calcium 117 (± 13,5) mg/l Single value
Hydrogen carbonate 173,9 mg/l Single value
Magnesium 19,7 (± 2,7) mg/l Single value
Oxygen 10,2 (± 1,1) mg/l Single value
Potassium 3,1 (± 0,2) mg/l Single value
Total hardness 3,73 (± 0,47) mmol/l 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.

Source: https://www.stw-erftstadt.de/fileadmin/Medienablage/Content/Dokumente/Wasser/Trinkwasseranalyse-20250321.pdf · 21.03.2025 · 23.10.2024 - 21.03.2025 · retrieved on 11/07/2026

Postcodes in this zone: 52388

WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.

Wasserleitungszweckverband der Neffeltalgemeinden

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

Water hardness
21.1 °dH
Hardness range hard
Key values WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 13 mg/l 50 mg/l
26 %
Single value
Escherichia coli (E. coli) 0 MPN/100 ml 0/100 ml Single value
Sulphate 64 mg/l 250 mg/l
26 %
Single value
Sodium 8,0 mg/l 200 mg/l
4 %
Single value
Show all recorded parameters (45 — most recent value per parameter)

Microbiology (2)

Microbiology – WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
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 (17)

Chemical parameters – WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane <0,0007 mg/l
below limit of quantification
3 µg/l
< 23 % *
Single value
Antimony <0,001 mg/l
below limit of quantification
5 µg/l
< 20 % *
Single value
Boron <0,01 mg/l
below limit of quantification
1 mg/l
< 1 % *
Single value
Bromate <0,001 mg/l
below limit of quantification
10 µg/l
< 10 % *
Single value
Bromodichloromethane <0,0003 mg/l
below limit of quantification
Single value
Chlorate <0,010 mg/l
below limit of quantification
70 µg/l
< 14 % *
Single value
Chromium <0,0005 mg/l
below limit of quantification
25 µg/l
< 2 % *
Single value
Dibromochloromethane <0,0003 mg/l
below limit of quantification
Single value
Fluoride 0,14 mg/l 1.5 mg/l
9 %
Single value
Mercury <0,0001 mg/l
below limit of quantification
1 µg/l
< 10 % *
Single value
Nitrate 13 mg/l 50 mg/l
26 %
Single value
Nitrite <0,005 mg/l
below limit of quantification
0.5 mg/l
< 1 % *
Single value
Tetrachloroethene <0,0003 mg/l
below limit of quantification
Single value
Tribromomethane (bromoform) <0,0003 mg/l
below limit of quantification
Single value
Trichloroethene <0,0003 mg/l
below limit of quantification
Single value
Trichloromethane (chloroform) <0,0003 mg/l
below limit of quantification
Single value
Trihalomethanes — Total n.n. mg/l
not detectable
50 µg/l 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.

Indicator parameters (15)

Indicator parameters – WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Single value
Ammonium <0,02 mg/l
below limit of quantification
0.5 mg/l
< 4 % *
Single value
Chloride 28 mg/l 250 mg/l
11 %
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
Colour <0,05 1/m
below limit of quantification
0.5 m⁻¹ Single value
Iron <0,01 mg/l
below limit of quantification
0.2 mg/l
< 5 % *
Single value
Manganese <0,005 mg/l
below limit of quantification
50 µg/l
< 10 % *
Single value
Odour ohne für den Verbraucher annehmbar Single value
pH 7,86 6,5–9,5 Single value
Sodium 8,0 mg/l 200 mg/l
4 %
Single value
Sulphate 64 mg/l 250 mg/l
26 %
Single value
Taste ohne für den Verbraucher annehmbar Single value
Total organic carbon (TOC) <0,50 mg/l
below limit of quantification
ohne anormale Veränderung Single value
Turbidity 0,066 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.

Treatment substances (1)

Treatment substances – WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
Parameter Value Parametric value Share of the parametric value Reference
Total chlorine 0,10 mg/l Single value

Further parameters (10)

Further parameters – WW Embken Ausgang, 52385 Nideggen-Embken, Neffeltalstr.
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 5,74 mmol/l Single value
Base capacity to pH 8.2 0,13 mmol/l Single value
Calcite precipitation capacity 31,9 mg/l Single value
Calcium 77,4 mg/l Single value
Carbonate hardness 15,9 °dH Single value
Magnesium 44,8 mg/l Single value
Oxygen 11,2 mg/l Single value
Phosphate 0,46 mg/l Single value
Potassium 3,1 mg/l Single value
Total hardness 21,1 °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.

Source: https://neffeltal.de/wp-content/uploads/2026/07/2026.03.31_P260724-1.pdf · Druckdatum: 27.04.2026, Version 1; Geprüft und freigegeben: 27.04.2026 · Probenahme: 31.03.2026; Prüfzeitraum: 31.03.2026 – 27.04.2026 · retrieved on 13/07/2026

Postcodes in this zone: 52388

Frequently asked questions about drinking water in Nörvenich

Who supplies the drinking water in Nörvenich?
Wasserleitungszweckverband der Neffeltalgemeinden. The values shown here come from the supply zone Wasserwerk Embken 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.