Drinking water in Lauf an der Pegnitz
One supply zone, water supplier: StWL Städtische Werke Lauf a.d. Pegnitz GmbH.
How to read the share of the parametric value
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.
Wasserwerk Spitalwald (größerer Teil) und Wasserwerk Rudolfshof (kleinerer Teil) - Mischwasser Lauf a.d. Pegnitz
StWL Städtische Werke Lauf a.d. Pegnitz GmbHAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 2 - 3 mg/l | 50 mg/l | — | Single value |
| Lead | < 0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Sulphate | 17 – 59 mg/l | 250 mg/l | — | Single value |
| Sodium | 23 - 82 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 (29 — most recent value per parameter)
Chemical parameters (15)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | <0,001 mg/l below limit of quantification | 5 µg/l | < 20 % * | Single value |
| Arsenic | 0,003 - 0,004 mg/l | 10 µg/l | — | Single value |
| Benzo(a)pyrene | < 0,002 µg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Cadmium | < 0,0009 mg/l below limit of quantification | 3 µg/l | < 30 % * | Single value |
| Chromium | 0,0007 mg/l | 25 µg/l | 3 % | Single value |
| Copper | <0,02 mg/l below limit of quantification | 2 mg/l | < 1 % * | Single value |
| Cyanide | < 0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| Fluoride | 0,2 - 0,6 mg/l | 1.5 mg/l | — | Single value |
| Lead | < 0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Mercury | < 0,0003 mg/l below limit of quantification | 1 µg/l | < 30 % * | Single value |
| Nickel | < 0,005 mg/l below limit of quantification | 20 µg/l | < 25 % * | Single value |
| Nitrate | 2 - 3 mg/l | 50 mg/l | — | Single value |
| Nitrite | < 0,02 mg/l below limit of quantification | 0.5 mg/l | < 4 % * | Single value |
| Trihalomethanes — Total | nicht nachweisbar µg/l not detectable | 50 µg/l | — | Single value |
| Uranium | 2,1 – 4,2 µg/l | 10 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 (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,030 mg/l below limit of quantification | 0.2 mg/l | < 15 % * | Single value |
| Ammonium | <0,10 mg/l below limit of quantification | 0.5 mg/l | < 20 % * | Single value |
| Chloride | 47 – 126 mg/l | 250 mg/l | — | Single value |
| Conductivity (25 °C) | 538 - 875 (bei 25°C) µS/cm bei 25 °C | 2,790 µS/cm | — | Single value |
| Iron | 0,06 mg/l | 0.2 mg/l | 30 % | Single value |
| Manganese | <0,01 mg/l below limit of quantification | 50 µg/l | < 20 % * | Single value |
| pH | 7,5 - 7,71 | 6,5–9,5 | — | Single value |
| Sodium | 23 - 82 mg/l | 200 mg/l | — | Single value |
| Sulphate | 17 – 59 mg/l | 250 mg/l | — | Single value |
| Temperature | 6,7 – 15,4 °C | — | — | 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 50 - 61 mg/l | — | — | Single value |
| Magnesium | 19 - 22 mg/l | — | — | Single value |
| Potassium | 8,2 - 15,0 mg/l | — | — | Single value |
| Total hardness | 12,8 °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.
Postcodes in this zone: 91207
Frequently asked questions about drinking water in Lauf an der Pegnitz
- How hard is the water in Lauf an der Pegnitz?
- StWL Städtische Werke Lauf a.d. Pegnitz GmbH publishes a total hardness of 12.8 °dH for the supply zone Wasserwerk Spitalwald (größerer Teil) und Wasserwerk Rudolfshof (kleinerer Teil) - Mischwasser Lauf a.d. Pegnitz (hardness range medium). 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: 01/2026, retrieved on 11/07/2026.
- Who supplies the drinking water in Lauf an der Pegnitz?
- StWL Städtische Werke Lauf a.d. Pegnitz GmbH. The values shown here come from the supply zone Wasserwerk Spitalwald (größerer Teil) und Wasserwerk Rudolfshof (kleinerer Teil) - Mischwasser Lauf a.d. Pegnitz 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.