Drinking water in Preist
One supply zone, water supplier: TWIST RLP - Auw-Hosten-Preist.
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.
Auw-Hosten-Preist
TWIST RLP - Auw-Hosten-PreistAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
No date is given for these values. The water supplier publishes the analysis without a sampling date and without a report date. When the water was examined is not apparent from the source — we do not add a date and we do not estimate one. What is stated is therefore only when we retrieved the document.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | 0 µg/L | 0.1 µg/l | 0 % | Mean · Auw-Hosten-Preist |
| Nitrate | < 1 mg/L below limit of quantification | 50 mg/l | < 2 % * | Mean · Auw-Hosten-Preist |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Auw-Hosten-Preist |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · Auw-Hosten-Preist |
| Sulphate | 76 mg/L | 250 mg/l | 30 % | Mean · Auw-Hosten-Preist |
| Sodium | 12.6 mg/L | 200 mg/l | 6 % | Mean · Auw-Hosten-Preist |
* 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 (30 — most recent value per parameter)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · Auw-Hosten-Preist |
Chemical parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 1 µg/L below limit of quantification | 5 µg/l | < 20 % * | Mean · Auw-Hosten-Preist |
| Arsenic | 1 µg/L | 10 µg/l | 10 % | Mean · Auw-Hosten-Preist |
| Boron | 0.07 mg/L | 1 mg/l | 7 % | Mean · Auw-Hosten-Preist |
| Cadmium | < 0.1 µg/L below limit of quantification | 3 µg/l | < 3 % * | Mean · Auw-Hosten-Preist |
| Copper | 0.003 mg/L | 2 mg/l | 0.2 % | Mean · Auw-Hosten-Preist |
| Cyanide | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · Auw-Hosten-Preist |
| Fluoride | 0.19 mg/L | 1.5 mg/l | 13 % | Mean · Auw-Hosten-Preist |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Auw-Hosten-Preist |
| Mercury | < 0.1 µg/L below limit of quantification | 1 µg/l | < 10 % * | Mean · Auw-Hosten-Preist |
| Nickel | < 1 µg/L below limit of quantification | 20 µg/l | < 5 % * | Mean · Auw-Hosten-Preist |
| Nitrate | < 1 mg/L below limit of quantification | 50 mg/l | < 2 % * | Mean · Auw-Hosten-Preist |
| Nitrite | < 0.01 mg/L below limit of quantification | 0.5 mg/l | < 2 % * | Mean · Auw-Hosten-Preist |
| Selenium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Auw-Hosten-Preist |
| Uranium | 0.6 µg/L | 10 µg/l | 6 % | Mean · Auw-Hosten-Preist |
* 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 | 0 µg/L | 0.1 µg/l | 0 % | Mean · Auw-Hosten-Preist |
Indicator parameters (10)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0.009 mg/L | 0.2 mg/l | 5 % | Mean · Auw-Hosten-Preist |
| Ammonium | < 0.06 mg/L below limit of quantification | 0.5 mg/l | < 12 % * | Mean · Auw-Hosten-Preist |
| Chloride | 8.2 mg/L | 250 mg/l | 3 % | Mean · Auw-Hosten-Preist |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Mean · Auw-Hosten-Preist |
| Iron | 0.011 mg/L | 0.2 mg/l | 5 % | Mean · Auw-Hosten-Preist |
| Manganese | 0.002 mg/L | 50 µg/l | 4 % | Mean · Auw-Hosten-Preist |
| pH | 8.35 - | 6,5–9,5 | — | Mean · Auw-Hosten-Preist |
| Sodium | 12.6 mg/L | 200 mg/l | 6 % | Mean · Auw-Hosten-Preist |
| Sulphate | 76 mg/L | 250 mg/l | 30 % | Mean · Auw-Hosten-Preist |
| Temperature | 8.9 °C | — | — | Mean · Auw-Hosten-Preist |
* 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 | 95.1 mg/L | — | — | Mean · Auw-Hosten-Preist |
| Magnesium | 41.3 mg/L | — | — | Mean · Auw-Hosten-Preist |
| Potassium | 6.1 mg/L | — | — | Mean · Auw-Hosten-Preist |
| Total hardness | 4.07 mmol/l | — | — | Mean · Auw-Hosten-Preist |
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: 54664
Frequently asked questions about drinking water in Preist
- How hard is the water in Preist?
- TWIST RLP - Auw-Hosten-Preist publishes a total hardness of 4.07 mmol/l for the supply zone Auw-Hosten-Preist — that corresponds to 22.8 °dH. 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 13/07/2026.
- How much nitrate is in the drinking water in Preist?
- TWIST RLP - Auw-Hosten-Preist publishes a nitrate value of < 1 mg/L for the supply zone Auw-Hosten-Preist. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Publication by the water supplier, retrieved on 13/07/2026.
- Are PFAS detectable in the drinking water in Preist?
- TWIST RLP - Auw-Hosten-Preist publishes for the supply zone Auw-Hosten-Preist a sum value PFAS-20 of 0 µg/L. The statutory parametric value is 0.1 µg/l; the measured value represents 0 % of the parametric value. For the sum of the 20 individual substances, this parametric value has applied since 12/01/2026. Basis: Publication by the water supplier, retrieved on 13/07/2026.
- Who supplies the drinking water in Preist?
- TWIST RLP - Auw-Hosten-Preist. The values shown here come from the supply zone Auw-Hosten-Preist 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.