Drinking water in 01909
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 1 underneath.
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.
Großharthau
Wasserversorgung Bischofswerda 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 |
|---|---|---|---|---|
| Sum of PFAS | 21 ng/l | — | — | Mean · Großharthau |
| Nitrate | 7 mg/l | 50 mg/l | 14 % | Mean · Großharthau |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Großharthau |
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Mean · Großharthau |
| Sulphate | 82 mg/l | 250 mg/l | 33 % | Mean · Großharthau |
| Sodium | 13 mg/l | 200 mg/l | 7 % | Mean · Großharthau |
* 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 (63 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 /100 ml | 0/100 ml | — | Mean · Großharthau |
| Intestinal enterococci | 0 /100 ml | 0/100 ml | — | Mean · Großharthau |
Chemical parameters (28)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | < 0,1 µg/l below limit of quantification | 3 µg/l | < 3 % * | Mean · Großharthau |
| Antimony | < 0,5 µg/l below limit of quantification | 5 µg/l | < 10 % * | Mean · Großharthau |
| Arsenic | < 2 µg/l below limit of quantification | 10 µg/l | < 20 % * | Mean · Großharthau |
| Benzene | < 0,1 µg/l below limit of quantification | 1 µg/l | < 10 % * | Mean · Großharthau |
| Benzo(a)pyrene | < 3 ng/l below limit of quantification | 10 ng/l | < 30 % * | Mean · Großharthau |
| Bisphenol A | < 750 ng/l below limit of quantification | 2.5 µg/l | < 30 % * | Mean · Großharthau |
| Boron | < 0,025 mg/l below limit of quantification | 1 mg/l | < 3 % * | Mean · Großharthau |
| Bromate | < 0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Mean · Großharthau |
| Bromodichloromethane | < 0,1 µg/l below limit of quantification | — | — | Mean · Großharthau |
| Cadmium | < 0,7 µg/l below limit of quantification | 3 µg/l | < 23 % * | Mean · Großharthau |
| Chlorate | < 0,02 mg/l below limit of quantification | 70 µg/l | < 29 % * | Mean · Großharthau |
| Chromium | < 0,5 µg/l below limit of quantification | 25 µg/l | < 2 % * | Mean · Großharthau |
| Copper | < 0,005 mg/l below limit of quantification | 2 mg/l | < 0.3 % * | Mean · Großharthau |
| Cyanide | < 0,002 mg/l below limit of quantification | 50 µg/l | < 4 % * | Mean · Großharthau |
| Dibromochloromethane | < 0,1 µg/l below limit of quantification | — | — | Mean · Großharthau |
| Fluoride | < 0,15 mg/l below limit of quantification | 1.5 mg/l | < 10 % * | Mean · Großharthau |
| Lead | < 1 µg/l below limit of quantification | 10 µg/l | < 10 % * | Mean · Großharthau |
| Mercury | < 0,2 µg/l below limit of quantification | 1 µg/l | < 20 % * | Mean · Großharthau |
| Nickel | 12,1 µg/l | 20 µg/l | 60 % | Mean · Großharthau |
| Nitrate | 7 mg/l | 50 mg/l | 14 % | Mean · Großharthau |
| Nitrite | < 0,01 mg/l below limit of quantification | 0.5 mg/l | < 2 % * | Mean · Großharthau |
| Selenium | < 3 µg/l below limit of quantification | 10 µg/l | < 30 % * | Mean · Großharthau |
| Tetrachloroethene | < 0,1 µg/l below limit of quantification | — | — | Mean · Großharthau |
| Tribromomethane (bromoform) | < 0,1 µg/l below limit of quantification | — | — | Mean · Großharthau |
| Trichloroethene | < 0,1 µg/l below limit of quantification | — | — | Mean · Großharthau |
| Trichloromethane (chloroform) | 0,2 µg/l | — | — | Mean · Großharthau |
| Trihalomethanes — Total | 0,2 µg/l | 50 µg/l | 0.4 % | Mean · Großharthau |
| Uranium | < 0,3 µg/l below limit of quantification | 10 µg/l | < 3 % * | Mean · Großharthau |
* 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)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 21 ng/l | — | — | Mean · Großharthau |
Indicator parameters (17)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | < 0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Großharthau |
| Ammonium | < 0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Großharthau |
| Chloride | 20 mg/l | 250 mg/l | 8 % | Mean · Großharthau |
| Clostridium perfringens (including spores) | 0 /100 ml | 0/100 ml | — | Mean · Großharthau |
| Coliform bacteria | 0 /100 ml | 0/100 ml | — | Mean · Großharthau |
| Colony count 22 °C | 0 /ml | ohne anormale Veränderung | — | Mean · Großharthau |
| Colony count 36 °C | 0 /ml | ohne anormale Veränderung | — | Mean · Großharthau |
| Conductivity (25 °C) | 422 µS/cm | 2,790 µS/cm | — | Mean · Großharthau |
| Iron | < 0,02 mg/l below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Großharthau |
| Manganese | < 0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean · Großharthau |
| Odour | ohne | für den Verbraucher annehmbar | — | Mean · Großharthau |
| Oxidisability | 0,7 mg/l O2 | 5 mg/l O2 | — | Mean · Großharthau |
| pH | 7,8 | 6,5–9,5 | — | Mean · Großharthau |
| Sodium | 13 mg/l | 200 mg/l | 7 % | Mean · Großharthau |
| Sulphate | 82 mg/l | 250 mg/l | 33 % | Mean · Großharthau |
| Total organic carbon (TOC) | 0,8 mg/l | ohne anormale Veränderung | — | Mean · Großharthau |
| Turbidity | 0,13 FNU | 1 NTU | — | Mean · Großharthau |
* 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)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Free chlorine | 0,09 mg/l | — | — | Mean · Großharthau |
Further parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Acid capacity to pH 4.3 | 2,07 mmol/l | — | — | Mean · Großharthau |
| Acid capacity to pH 8.2 | 0 mmol/l | — | — | Mean · Großharthau |
| Base capacity to pH 8.2 | 0,07 mmol/l | — | — | Mean · Großharthau |
| Calcium | 61 mg/l | — | — | Mean · Großharthau |
| Carbonate hardness | 5,7 °dH | — | — | Mean · Großharthau |
| Magnesium | 7,1 mg/l | — | — | Mean · Großharthau |
| Non-carbonate hardness | 4,5 °dH | — | — | Mean · Großharthau |
| Oxygen | 9,3 mg/l | — | — | Mean · Großharthau |
| Phosphate | 0,01 mg/l | — | — | Mean · Großharthau |
| Potassium | 2,7 mg/l | — | — | Mean · Großharthau |
| Saturation index | 0,1 | — | — | Mean · Großharthau |
| Silicate / silicic acid | 21 mg/l | — | — | Mean · Großharthau |
| Total hardness | 10,2 °dH | — | — | Mean · Großharthau |
| Zinc | < 0,01 mg/l below limit of quantification | — | — | Mean · Großharthau |
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.
Show 1 more supply zone in this postcode
WW ARNSDORF-KARLSWALD
ZV Bischofswerda-RöderaueAssigned 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 31/12/2020. 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.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3.9 mg/l | 50 mg/l | 8 % | Mean |
| Sulphate | 64.9 mg/l | 250 mg/l | 26 % | Mean |
Show all recorded parameters (8 — most recent value per parameter)
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3.9 mg/l | 50 mg/l | 8 % | Mean |
| Uranium | 0.000 mg/l | 10 µg/l | 0 % | Mean |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0.01 mg/l | 0.2 mg/l | 5 % | Mean |
| Iron | 0.03 mg/l | 0.2 mg/l | 15 % | Mean |
| Manganese | <0.005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Mean |
| pH | 7.9 - | 6,5–9,5 | — | Mean |
| Sulphate | 64.9 mg/l | 250 mg/l | 26 % | 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.
Further parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Total hardness | 10.5 °dH | — | — | 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 01909
- How hard is the water in Postcode 01909?
- Wasserversorgung Bischofswerda GmbH publishes a total hardness of 10.2 °dH for the supply zone Großharthau (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: Publication by the water supplier, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 01909?
- Wasserversorgung Bischofswerda GmbH publishes a nitrate value of 7 mg/l for the supply zone Großharthau. The statutory parametric value is 50 mg/l; the measured value represents 14 % of the parametric value. Basis: Publication by the water supplier, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 01909?
- Wasserversorgung Bischofswerda GmbH. The values shown here come from the supply zone Großharthau 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.