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Drinking water in 91054

For this postcode Erlanger Stadtwerke AG (ESTW) 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 10 underneath.

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.

Burgberg (WT)

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 2 mittel
Key values Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Burgberg (WT)
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · Burgberg (WT)
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Burgberg (WT)
Sodium 1,26 mmol/L 200 mg/l — Mean · Burgberg (WT)
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (9)

Chemical parameters – Burgberg (WT)
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 · Burgberg (WT)
Arsenic 0,002 mg/l 10 µg/l
20 %
Mean · Burgberg (WT)
Boron 0,12 mg/l 1 mg/l
12 %
Mean · Burgberg (WT)
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · Burgberg (WT)
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Burgberg (WT)
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · Burgberg (WT)
Pesticides — Total n.n. mg/l
not detectable
 0.5 µg/l — Mean · Burgberg (WT)
Trihalomethanes — Total 0,0001 mg/l 50 µg/l
0.2 %
Mean · Burgberg (WT)
Uranium 0,002 mg/l 10 µg/l
20 %
Mean · Burgberg (WT)

* 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 – Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · Burgberg (WT)
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · Burgberg (WT)
Calcite dissolution capacity 0,18 mg/l CaCO3 5 mg/l CaCO3 — Mean · Burgberg (WT)
Chloride 31 mg/l 250 mg/l
12 %
Mean · Burgberg (WT)
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · Burgberg (WT)
Colony count 22 °C 2 in 1 ml ohne anormale Veränderung — Mean · Burgberg (WT)
Colony count 36 °C 0 in 1 ml ohne anormale Veränderung — Mean · Burgberg (WT)
Conductivity (25 °C) 461 µS/cm 2,790 µS/cm — Mean · Burgberg (WT)
Iron 0,02 mg/l 0.2 mg/l
10 %
Mean · Burgberg (WT)
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · Burgberg (WT)
pH 7,67 6,5–9,5 — Mean · Burgberg (WT)
Sodium 1,26 mmol/L 200 mg/l — Mean · Burgberg (WT)
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Burgberg (WT)
Temperature 11,1 °C — — Mean · Burgberg (WT)
Total organic carbon (TOC) 2,92 mg/l C ohne anormale Veränderung — Mean · Burgberg (WT)
Turbidity 0,15 FNU 1 NTU — Mean · Burgberg (WT)

* 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 (12)

Further parameters – Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,26 mmol/l — — Mean · Burgberg (WT)
Base capacity to pH 8.2 0,15 mmol/l — — Mean · Burgberg (WT)
Calcium 0,95 mmol/l — — Mean · Burgberg (WT)
Carbonate hardness 9,13 °dH — — Mean · Burgberg (WT)
Hardness range (WRMG) 2 mittel — — Mean · Burgberg (WT)
Hydrogen carbonate 199 mg/l — — Mean · Burgberg (WT)
Magnesium 0,78 mmol/l — — Mean · Burgberg (WT)
Oxygen 11,2 mg/l — — Mean · Burgberg (WT)
Phosphate 0,13 mg/l — — Mean · Burgberg (WT)
Potassium 0,14 mmol/l — — Mean · Burgberg (WT)
Silicate / silicic acid 6,25 mg/l — — Median · Burgberg (WT)
Sum of alkaline earth metals 1,75 mmol/l — — Mean · Burgberg (WT)

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026
Show 10 more supply zones in this postcode

Meilwald

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 2 mittel
Key values Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 4 mg/l 50 mg/l
8 %
Mean · Meilwald
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · Meilwald
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Meilwald
Sodium 1,00 mmol/L 200 mg/l — Mean · Meilwald
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (9)

Chemical parameters – Meilwald
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 · Meilwald
Arsenic 0,004 mg/l 10 µg/l
40 %
Mean · Meilwald
Boron 0,09 mg/l 1 mg/l
9 %
Mean · Meilwald
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · Meilwald
Nitrate 4 mg/l 50 mg/l
8 %
Mean · Meilwald
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · Meilwald
Pesticides — Total n.n. mg/l
not detectable
 0.5 µg/l — Mean · Meilwald
Trihalomethanes — Total 0,0004 mg/l 50 µg/l
0.8 %
Mean · Meilwald
Uranium 0,002 mg/l 10 µg/l
20 %
Mean · Meilwald

* 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 – Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Aluminium 0,01 mg/l 0.2 mg/l
5 %
Mean · Meilwald
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · Meilwald
Calcite dissolution capacity 0 mg/l CaCO3 5 mg/l CaCO3 — Mean · Meilwald
Chloride 29 mg/l 250 mg/l
12 %
Mean · Meilwald
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · Meilwald
Colony count 22 °C 1 in 1 ml ohne anormale Veränderung — Mean · Meilwald
Colony count 36 °C 0 in 1 ml ohne anormale Veränderung — Mean · Meilwald
Conductivity (25 °C) 469 µS/cm 2,790 µS/cm — Mean · Meilwald
Iron 0,01 mg/l 0.2 mg/l
5 %
Mean · Meilwald
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · Meilwald
pH 7,66 6,5–9,5 — Mean · Meilwald
Sodium 1,00 mmol/L 200 mg/l — Mean · Meilwald
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Meilwald
Temperature 11,5 °C — — Mean · Meilwald
Total organic carbon (TOC) 2,27 mg/l C ohne anormale Veränderung — Mean · Meilwald
Turbidity 0,17 FNU 1 NTU — Mean · Meilwald

* 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 (12)

Further parameters – Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,39 mmol/l — — Mean · Meilwald
Base capacity to pH 8.2 0,15 mmol/l — — Mean · Meilwald
Calcium 1,17 mmol/l — — Mean · Meilwald
Carbonate hardness 9,5 °dH — — Mean · Meilwald
Hardness range (WRMG) 2 mittel — — Mean · Meilwald
Hydrogen carbonate 206 mg/l — — Mean · Meilwald
Magnesium 0,74 mmol/l — — Mean · Meilwald
Oxygen 10,5 mg/l — — Mean · Meilwald
Phosphate 0,13 mg/l — — Mean · Meilwald
Potassium 0,14 mmol/l — — Mean · Meilwald
Silicate / silicic acid 6,02 mg/l — — Median · Meilwald
Sum of alkaline earth metals 1,93 mmol/l — — Mean · Meilwald

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026

N-ERGIE

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 3 hart
Key values N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 14 mg/l 50 mg/l
28 %
Mean · N-ERGIE
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · N-ERGIE
Sulphate 16 mg/l 250 mg/l
6 %
Mean · N-ERGIE
Sodium 0,39 mmol/L 200 mg/l — Mean · N-ERGIE
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (9)

Chemical parameters – N-ERGIE
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 · N-ERGIE
Arsenic <0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Mean · N-ERGIE
Boron <0,04 mg/l
below limit of quantification
 1 mg/l
< 4 % *
Mean · N-ERGIE
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · N-ERGIE
Nitrate 14 mg/l 50 mg/l
28 %
Mean · N-ERGIE
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · N-ERGIE
Pesticides — Total 0,00006 mg/l 0.5 µg/l
12 %
Mean · N-ERGIE
Trihalomethanes — Total 0,0014 mg/l 50 µg/l
3 %
Mean · N-ERGIE
Uranium <0,001 mg/l
below limit of quantification
 10 µg/l
< 10 % *
Mean · N-ERGIE

* 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 – N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · N-ERGIE
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · N-ERGIE
Calcite dissolution capacity 0 mg/l CaCO3 5 mg/l CaCO3 — Mean · N-ERGIE
Chloride 24 mg/l 250 mg/l
10 %
Mean · N-ERGIE
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · N-ERGIE
Colony count 22 °C 0 in 1 ml ohne anormale Veränderung — Mean · N-ERGIE
Colony count 36 °C 1 in 1 ml ohne anormale Veränderung — Mean · N-ERGIE
Conductivity (25 °C) 539 µS/cm 2,790 µS/cm — Mean · N-ERGIE
Iron <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · N-ERGIE
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · N-ERGIE
pH 7,54 6,5–9,5 — Mean · N-ERGIE
Sodium 0,39 mmol/L 200 mg/l — Mean · N-ERGIE
Sulphate 16 mg/l 250 mg/l
6 %
Mean · N-ERGIE
Temperature 9,8 °C — — Mean · N-ERGIE
Total organic carbon (TOC) 0,52 mg/l C ohne anormale Veränderung — Mean · N-ERGIE
Turbidity 0,11 FNU 1 NTU — Mean · N-ERGIE

* 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 (12)

Further parameters – N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 4,74 mmol/l — — Mean · N-ERGIE
Base capacity to pH 8.2 0,30 mmol/l — — Mean · N-ERGIE
Calcium 1,62 mmol/l — — Mean · N-ERGIE
Carbonate hardness 13,3 °dH — — Mean · N-ERGIE
Hardness range (WRMG) 3 hart — — Mean · N-ERGIE
Hydrogen carbonate 289 mg/l — — Mean · N-ERGIE
Magnesium 1,11 mmol/l — — Mean · N-ERGIE
Oxygen 9,9 mg/l — — Mean · N-ERGIE
Phosphate 0,07 mg/l — — Mean · N-ERGIE
Potassium <0,04 mmol/l
below limit of quantification
 — — Mean · N-ERGIE
Silicate / silicic acid 2,89 mg/l — — Median · N-ERGIE
Sum of alkaline earth metals 2,73 mmol/l — — Mean · N-ERGIE

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026

Ost

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 2 mittel
Key values Ost
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Ost
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · Ost
Sulphate 31 mg/l 250 mg/l
12 %
Mean · Ost
Sodium 0,48 mmol/L 200 mg/l — Mean · Ost
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (9)

Chemical parameters – Ost
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 · Ost
Arsenic 0,007 mg/l 10 µg/l
70 %
Mean · Ost
Boron <0,04 mg/l
below limit of quantification
 1 mg/l
< 4 % *
Mean · Ost
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · Ost
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Ost
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · Ost
Pesticides — Total n.n. mg/l
not detectable
 0.5 µg/l — Mean · Ost
Trihalomethanes — Total 0,0004 mg/l 50 µg/l
0.8 %
Mean · Ost
Uranium 0,002 mg/l 10 µg/l
20 %
Mean · Ost

* 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 – Ost
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · Ost
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · Ost
Calcite dissolution capacity 0 mg/l CaCO3 5 mg/l CaCO3 — Mean · Ost
Chloride 17 mg/l 250 mg/l
7 %
Mean · Ost
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · Ost
Colony count 22 °C 0 in 1 ml ohne anormale Veränderung — Mean · Ost
Colony count 36 °C 0 in 1 ml ohne anormale Veränderung — Mean · Ost
Conductivity (25 °C) 413 µS/cm 2,790 µS/cm — Mean · Ost
Iron 0,02 mg/l 0.2 mg/l
10 %
Mean · Ost
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · Ost
pH 7,58 6,5–9,5 — Mean · Ost
Sodium 0,48 mmol/L 200 mg/l — Mean · Ost
Sulphate 31 mg/l 250 mg/l
12 %
Mean · Ost
Temperature 10,9 °C — — Mean · Ost
Total organic carbon (TOC) 1,79 mg/l C ohne anormale Veränderung — Mean · Ost
Turbidity 0,29 FNU 1 NTU — Mean · Ost

* 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 (12)

Further parameters – Ost
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,29 mmol/l — — Mean · Ost
Base capacity to pH 8.2 0,19 mmol/l — — Mean · Ost
Calcium 1,25 mmol/l — — Mean · Ost
Carbonate hardness 9,20 °dH — — Mean · Ost
Hardness range (WRMG) 2 mittel — — Mean · Ost
Hydrogen carbonate 201 mg/l — — Mean · Ost
Magnesium 0,66 mmol/l — — Mean · Ost
Oxygen 9,8 mg/l — — Mean · Ost
Phosphate 0,09 mg/l — — Mean · Ost
Potassium 0,13 mmol/l — — Mean · Ost
Silicate / silicic acid 4,57 mg/l — — Median · Ost
Sum of alkaline earth metals 1,88 mmol/l — — Mean · Ost

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026

West 1

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 2 mittel
Key values West 1
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9 mg/l 50 mg/l
18 %
Mean · West 1
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · West 1
Sulphate 46 mg/l 250 mg/l
18 %
Mean · West 1
Sodium 1,26 mmol/L 200 mg/l — Mean · West 1
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

Microbiology – West 1
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · West 1
Intestinal enterococci 0 in 100 ml 0/100 ml — Mean · West 1

Chemical parameters (9)

Chemical parameters – West 1
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 · West 1
Arsenic 0,002 mg/l 10 µg/l
20 %
Mean · West 1
Boron 0,10 mg/l 1 mg/l
10 %
Mean · West 1
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · West 1
Nitrate 9 mg/l 50 mg/l
18 %
Mean · West 1
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · West 1
Pesticides — Total n.n. mg/l
not detectable
 0.5 µg/l — Mean · West 1
Trihalomethanes — Total 0,0023 mg/l 50 µg/l
5 %
Mean · West 1
Uranium 0,004 mg/l 10 µg/l
40 %
Mean · West 1

* 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 – West 1
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · West 1
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · West 1
Calcite dissolution capacity 0 mg/l CaCO3 5 mg/l CaCO3 — Mean · West 1
Chloride 41 mg/l 250 mg/l
16 %
Mean · West 1
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · West 1
Colony count 22 °C 0 in 1 ml ohne anormale Veränderung — Mean · West 1
Colony count 36 °C 0 in 1 ml ohne anormale Veränderung — Mean · West 1
Conductivity (25 °C) 572 µS/cm 2,790 µS/cm — Mean · West 1
Iron 0,01 mg/l 0.2 mg/l
5 %
Mean · West 1
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · West 1
pH 7,68 6,5–9,5 — Mean · West 1
Sodium 1,26 mmol/L 200 mg/l — Mean · West 1
Sulphate 46 mg/l 250 mg/l
18 %
Mean · West 1
Temperature 12,0 °C — — Mean · West 1
Total organic carbon (TOC) 1,66 mg/l C ohne anormale Veränderung — Mean · West 1
Turbidity 0,10 FNU 1 NTU — Mean · West 1

* 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 (12)

Further parameters – West 1
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 3,82 mmol/l — — Mean · West 1
Base capacity to pH 8.2 0,15 mmol/l — — Mean · West 1
Calcium 1,45 mmol/l — — Mean · West 1
Carbonate hardness 10,70 °dH — — Mean · West 1
Hardness range (WRMG) 2 mittel — — Mean · West 1
Hydrogen carbonate 233 mg/l — — Mean · West 1
Magnesium 0,86 mmol/l — — Mean · West 1
Oxygen 9,9 mg/l — — Mean · West 1
Phosphate 0,24 mg/l — — Mean · West 1
Potassium 0,15 mmol/l — — Mean · West 1
Silicate / silicic acid 5,41 mg/l — — Median · West 1
Sum of alkaline earth metals 2,30 mmol/l — — Mean · West 1

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026

WfW

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
Hardness range 3 hart
Key values WfW
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 6 mg/l 50 mg/l
12 %
Mean · WfW
Escherichia coli (E. coli) 0 in 100 ml 0/100 ml — Mean · WfW
Sulphate 19 mg/l 250 mg/l
8 %
Mean · WfW
Sodium 0,43 mmol/L 200 mg/l — Mean · WfW
Show all recorded parameters (39 — most recent value per parameter)

Microbiology (2)

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

Chemical parameters (9)

Chemical parameters – WfW
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 · WfW
Arsenic 0,001 mg/l 10 µg/l
10 %
Mean · WfW
Boron <0,04 mg/l
below limit of quantification
 1 mg/l
< 4 % *
Mean · WfW
Fluoride <0,2 mg/l
below limit of quantification
 1.5 mg/l
< 13 % *
Mean · WfW
Nitrate 6 mg/l 50 mg/l
12 %
Mean · WfW
Nitrite <0,02 mg/l
below limit of quantification
 0.5 mg/l
< 4 % *
Mean · WfW
Pesticides — Total n.n. mg/l
not detectable
 0.5 µg/l — Mean · WfW
Trihalomethanes — Total 0,0043 mg/l 50 µg/l
9 %
Mean · WfW
Uranium 0,001 mg/l 10 µg/l
10 %
Mean · WfW

* 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 – WfW
Parameter Value Parametric value Share of the parametric value Reference
Aluminium <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · WfW
Ammonium <0,04 mg/l
below limit of quantification
 0.5 mg/l
< 8 % *
Mean · WfW
Calcite dissolution capacity 0 mg/l CaCO3 5 mg/l CaCO3 — Mean · WfW
Chloride 15 mg/l 250 mg/l
6 %
Mean · WfW
Coliform bacteria 0 in 100 ml 0/100 ml — Mean · WfW
Colony count 22 °C 0 in 1 ml ohne anormale Veränderung — Mean · WfW
Colony count 36 °C 0 in 1 ml ohne anormale Veränderung — Mean · WfW
Conductivity (25 °C) 502 µS/cm 2,790 µS/cm — Mean · WfW
Iron <0,01 mg/l
below limit of quantification
 0.2 mg/l
< 5 % *
Mean · WfW
Manganese <0,01 mg/l
below limit of quantification
 50 µg/l
< 20 % *
Mean · WfW
pH 7,58 6,5–9,5 — Mean · WfW
Sodium 0,43 mmol/L 200 mg/l — Mean · WfW
Sulphate 19 mg/l 250 mg/l
8 %
Mean · WfW
Temperature 12,2 °C — — Mean · WfW
Total organic carbon (TOC) 0,64 mg/l C ohne anormale Veränderung — Mean · WfW
Turbidity 0,15 FNU 1 NTU — Mean · WfW

* 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 (12)

Further parameters – WfW
Parameter Value Parametric value Share of the parametric value Reference
Acid capacity to pH 4.3 4,57 mmol/l — — Mean · WfW
Base capacity to pH 8.2 0,24 mmol/l — — Mean · WfW
Calcium 1,70 mmol/l — — Mean · WfW
Carbonate hardness 12,8 °dH — — Mean · WfW
Hardness range (WRMG) 3 hart — — Mean · WfW
Hydrogen carbonate 278 mg/l — — Mean · WfW
Magnesium 0,78 mmol/l — — Mean · WfW
Oxygen 9,6 mg/l — — Mean · WfW
Phosphate 0,04 mg/l — — Mean · WfW
Potassium 0,05 mmol/l — — Mean · WfW
Silicate / silicic acid 2,38 mg/l — — Median · WfW
Sum of alkaline earth metals 2,52 mmol/l — — Mean · WfW

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.estw.de/de/Energie-Wasser/Wasser/Trinkwasserqualitaet/Analysenblatt-ESTW-2025-001.pdf · 03.02.2026 · Durchschnittswerte 2025 / Medianwerte 2025 · retrieved on 11/07/2026

Behälter am Burgberg (WT)

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
9.8 °dH
Hardness range 2 mittel
Key values Behälter am Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Behälter am Burgberg (WT)
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Behälter am Burgberg (WT)
Sodium 29 mg/l 200 mg/l
14 %
Mean · Behälter am Burgberg (WT)
Show all recorded parameters (12 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Behälter am Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 2 mg/l 50 mg/l
4 %
Mean · Behälter am Burgberg (WT)

Indicator parameters (4)

Indicator parameters – Behälter am Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Chloride 31 mg/l 250 mg/l
12 %
Mean · Behälter am Burgberg (WT)
pH 7,67 6,5–9,5 — Mean · Behälter am Burgberg (WT)
Sodium 29 mg/l 200 mg/l
14 %
Mean · Behälter am Burgberg (WT)
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Behälter am Burgberg (WT)

Further parameters (7)

Further parameters – Behälter am Burgberg (WT)
Parameter Value Parametric value Share of the parametric value Reference
Calcium 38 mg/l — — Mean · Behälter am Burgberg (WT)
Hardness range (WRMG) 2 mittel — — Mean · Behälter am Burgberg (WT)
Hydrogen carbonate 199 mg/l — — Mean · Behälter am Burgberg (WT)
Magnesium 18,7 mg/l — — Mean · Behälter am Burgberg (WT)
Potassium 5,5 mg/l — — Mean · Behälter am Burgberg (WT)
Sum of alkaline earth metals 1,75 mmol/l — — Mean · Behälter am Burgberg (WT)
Total hardness 9,78 °dH — — Mean · Behälter am Burgberg (WT)

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: erlangen-2760f7d9.html · 03.02.2026 · Durchschnittswerte 2025 · retrieved on 25/07/2026

Bezug von N-ERGIE

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
15.3 °dH
Hardness range 3 hart
Key values Bezug von N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 14 mg/l 50 mg/l
28 %
Mean · Bezug von N-ERGIE
Sulphate 16 mg/l 250 mg/l
6 %
Mean · Bezug von N-ERGIE
Sodium 9 mg/l 200 mg/l
5 %
Mean · Bezug von N-ERGIE
Show all recorded parameters (12 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Bezug von N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 14 mg/l 50 mg/l
28 %
Mean · Bezug von N-ERGIE

Indicator parameters (4)

Indicator parameters – Bezug von N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Chloride 24 mg/l 250 mg/l
10 %
Mean · Bezug von N-ERGIE
pH 7,54 6,5–9,5 — Mean · Bezug von N-ERGIE
Sodium 9 mg/l 200 mg/l
5 %
Mean · Bezug von N-ERGIE
Sulphate 16 mg/l 250 mg/l
6 %
Mean · Bezug von N-ERGIE

Further parameters (7)

Further parameters – Bezug von N-ERGIE
Parameter Value Parametric value Share of the parametric value Reference
Calcium 65 mg/l — — Mean · Bezug von N-ERGIE
Hardness range (WRMG) 3 hart — — Mean · Bezug von N-ERGIE
Hydrogen carbonate 289 mg/l — — Mean · Bezug von N-ERGIE
Magnesium 27,2 mg/l — — Mean · Bezug von N-ERGIE
Potassium <1,5 mg/l
below limit of quantification
 — — Mean · Bezug von N-ERGIE
Sum of alkaline earth metals 2,73 mmol/l — — Mean · Bezug von N-ERGIE
Total hardness 15,28 °dH — — Mean · Bezug von N-ERGIE

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: erlangen-2760f7d9.html · 03.02.2026 · Durchschnittswerte 2025 · retrieved on 25/07/2026

Bezug von WfW*

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
14.1 °dH
Hardness range 3 hart
Key values Bezug von WfW*
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 6 mg/l 50 mg/l
12 %
Mean · Bezug von WfW*
Sulphate 19 mg/l 250 mg/l
8 %
Mean · Bezug von WfW*
Sodium 10 mg/l 200 mg/l
5 %
Mean · Bezug von WfW*
Show all recorded parameters (12 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Bezug von WfW*
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 6 mg/l 50 mg/l
12 %
Mean · Bezug von WfW*

Indicator parameters (4)

Indicator parameters – Bezug von WfW*
Parameter Value Parametric value Share of the parametric value Reference
Chloride 15 mg/l 250 mg/l
6 %
Mean · Bezug von WfW*
pH 7,58 6,5–9,5 — Mean · Bezug von WfW*
Sodium 10 mg/l 200 mg/l
5 %
Mean · Bezug von WfW*
Sulphate 19 mg/l 250 mg/l
8 %
Mean · Bezug von WfW*

Further parameters (7)

Further parameters – Bezug von WfW*
Parameter Value Parametric value Share of the parametric value Reference
Calcium 68 mg/l — — Mean · Bezug von WfW*
Hardness range (WRMG) 3 hart — — Mean · Bezug von WfW*
Hydrogen carbonate 278 mg/l — — Mean · Bezug von WfW*
Magnesium 19 mg/l — — Mean · Bezug von WfW*
Potassium 1,9 mg/l — — Mean · Bezug von WfW*
Sum of alkaline earth metals 2,52 mmol/l — — Mean · Bezug von WfW*
Total hardness 14,10 °dH — — Mean · Bezug von WfW*

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: erlangen-2760f7d9.html · 03.02.2026 · Durchschnittswerte 2025 · retrieved on 25/07/2026

Hochbehälter am Meilwald

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
10.8 °dH
Hardness range 2 mittel
Key values Hochbehälter am Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 4 mg/l 50 mg/l
8 %
Mean · Hochbehälter am Meilwald
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Hochbehälter am Meilwald
Sodium 23 mg/l 200 mg/l
12 %
Mean · Hochbehälter am Meilwald
Show all recorded parameters (12 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Hochbehälter am Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 4 mg/l 50 mg/l
8 %
Mean · Hochbehälter am Meilwald

Indicator parameters (4)

Indicator parameters – Hochbehälter am Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Chloride 29 mg/l 250 mg/l
12 %
Mean · Hochbehälter am Meilwald
pH 7,66 6,5–9,5 — Mean · Hochbehälter am Meilwald
Sodium 23 mg/l 200 mg/l
12 %
Mean · Hochbehälter am Meilwald
Sulphate 36 mg/l 250 mg/l
14 %
Mean · Hochbehälter am Meilwald

Further parameters (7)

Further parameters – Hochbehälter am Meilwald
Parameter Value Parametric value Share of the parametric value Reference
Calcium 47 mg/l — — Mean · Hochbehälter am Meilwald
Hardness range (WRMG) 2 mittel — — Mean · Hochbehälter am Meilwald
Hydrogen carbonate 206 mg/l — — Mean · Hochbehälter am Meilwald
Magnesium 18,1 mg/l — — Mean · Hochbehälter am Meilwald
Potassium 5,4 mg/l — — Mean · Hochbehälter am Meilwald
Sum of alkaline earth metals 1,93 mmol/l — — Mean · Hochbehälter am Meilwald
Total hardness 10,82 °dH — — Mean · Hochbehälter am Meilwald

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: erlangen-2760f7d9.html · 03.02.2026 · Durchschnittswerte 2025 · retrieved on 25/07/2026

Wasserwerk West I

Erlanger Stadtwerke AG (ESTW)

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

Water hardness
12.9 °dH
Hardness range 2 mittel
Key values Wasserwerk West I
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9 mg/l 50 mg/l
18 %
Mean · Wasserwerk West I
Sulphate 46 mg/l 250 mg/l
18 %
Mean · Wasserwerk West I
Sodium 29 mg/l 200 mg/l
14 %
Mean · Wasserwerk West I
Show all recorded parameters (12 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk West I
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 9 mg/l 50 mg/l
18 %
Mean · Wasserwerk West I

Indicator parameters (4)

Indicator parameters – Wasserwerk West I
Parameter Value Parametric value Share of the parametric value Reference
Chloride 41 mg/l 250 mg/l
16 %
Mean · Wasserwerk West I
pH 7,68 6,5–9,5 — Mean · Wasserwerk West I
Sodium 29 mg/l 200 mg/l
14 %
Mean · Wasserwerk West I
Sulphate 46 mg/l 250 mg/l
18 %
Mean · Wasserwerk West I

Further parameters (7)

Further parameters – Wasserwerk West I
Parameter Value Parametric value Share of the parametric value Reference
Calcium 58 mg/l — — Mean · Wasserwerk West I
Hardness range (WRMG) 2 mittel — — Mean · Wasserwerk West I
Hydrogen carbonate 233 mg/l — — Mean · Wasserwerk West I
Magnesium 20,8 mg/l — — Mean · Wasserwerk West I
Potassium 5,7 mg/l — — Mean · Wasserwerk West I
Sum of alkaline earth metals 2,30 mmol/l — — Mean · Wasserwerk West I
Total hardness 12,88 °dH — — Mean · Wasserwerk West I

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: erlangen-2760f7d9.html · 03.02.2026 · Durchschnittswerte 2025 · retrieved on 25/07/2026

Frequent questions about postcode 91054

How hard is the water in Postcode 91054?
Erlanger Stadtwerke AG (ESTW) publishes the hardness range 2 mittel for the supply zone Burgberg (WT). 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: 03.02.2026, retrieved on 11/07/2026.
How much nitrate is in the drinking water in Postcode 91054?
Erlanger Stadtwerke AG (ESTW) publishes a nitrate value of 2 mg/l for the supply zone Burgberg (WT). The statutory parametric value is 50 mg/l; the measured value represents 4 % of the parametric value. Basis: 03.02.2026, retrieved on 11/07/2026.
Who supplies the drinking water in Postcode 91054?
Erlanger Stadtwerke AG (ESTW). The values shown here come from the supply zone Burgberg (WT) 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.