Drinking water in Vallendar
3 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
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.
Feisternacht (WW), TW,HB Ziegenbusch
TWIST RLP - Feisternacht (WW), TW,HB ZiegenbuschAssigned 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 |
|---|---|---|---|---|
| Nitrate | 8.9 mg/L | 50 mg/l | 18 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Sulphate | 26 mg/L | 250 mg/l | 10 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Sodium | 14 mg/L | 200 mg/l | 7 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
* 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)
Microbiology (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
Chemical parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 0.5 µg/L below limit of quantification | 5 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Arsenic | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Boron | < 0.1 mg/L below limit of quantification | 1 mg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Cadmium | < 0.3 µg/L below limit of quantification | 3 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Cyanide | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Fluoride | 0.25 mg/L | 1.5 mg/l | 17 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Mercury | < 0.1 µg/L below limit of quantification | 1 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Nickel | 2.2 µg/L | 20 µg/l | 11 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Nitrate | 8.9 mg/L | 50 mg/l | 18 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Selenium | 1.3 µg/L | 10 µg/l | 13 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Uranium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
* 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 | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Ammonium | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Chloride | < 10 mg/L below limit of quantification | 250 mg/l | < 4 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Iron | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Manganese | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| pH | 7.62 - | 6,5–9,5 | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Sodium | 14 mg/L | 200 mg/l | 7 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Sulphate | 26 mg/L | 250 mg/l | 10 % | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Temperature | 15 °C | — | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
* 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 | 41 mg/L | — | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Magnesium | 11 mg/L | — | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Potassium | 3.4 mg/L | — | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
| Total hardness | 1.36 mmol/l | — | — | Mean · Feisternacht (WW), TW,HB Ziegenbusch |
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: 56179
Show 2 more supply zones
Oberwerth (WW), TW, Br. 1,2,3
TWIST RLP - Oberwerth (WW), TW, Br. 1,2,3Assigned 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 | 0.008 µg/L | 0.1 µg/l | 8 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Nitrate | 11 mg/L | 50 mg/l | 22 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Sulphate | 45 mg/L | 250 mg/l | 18 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Sodium | 32 mg/L | 200 mg/l | 16 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
* 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 · Oberwerth (WW), TW, Br. 1,2,3 |
Chemical parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 0.5 µg/L below limit of quantification | 5 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Arsenic | 1.2 µg/L | 10 µg/l | 12 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Boron | < 0.1 mg/L below limit of quantification | 1 mg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Cadmium | < 0.3 µg/L below limit of quantification | 3 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Copper | 0.051 mg/L | 2 mg/l | 3 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Cyanide | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Fluoride | < 0.15 mg/L below limit of quantification | 1.5 mg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Mercury | < 0.1 µg/L below limit of quantification | 1 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Nickel | < 2 µg/L below limit of quantification | 20 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Nitrate | 11 mg/L | 50 mg/l | 22 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Selenium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Uranium | 1.2 µg/L | 10 µg/l | 12 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
* 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 | 0.008 µg/L | 0.1 µg/l | 8 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
Indicator parameters (10)
| 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 · Oberwerth (WW), TW, Br. 1,2,3 |
| Ammonium | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Chloride | 46 mg/L | 250 mg/l | 18 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Iron | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Manganese | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| pH | 7.65 - | 6,5–9,5 | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Sodium | 32 mg/L | 200 mg/l | 16 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Sulphate | 45 mg/L | 250 mg/l | 18 % | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Temperature | 14 °C | — | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
* 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 | 73 mg/L | — | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Magnesium | 14 mg/L | — | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Potassium | 4.1 mg/L | — | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
| Total hardness | 2.26 mmol/l | — | — | Mean · Oberwerth (WW), TW, Br. 1,2,3 |
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: 56179
WGA Kaltenengers (WW), TW
TWIST RLP - WGA Kaltenengers (WW), TWAssigned 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 | 0.01 µg/L | 0.1 µg/l | 10 % | Mean · WGA Kaltenengers (WW), TW |
| Nitrate | 11 mg/L | 50 mg/l | 22 % | Mean · WGA Kaltenengers (WW), TW |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Escherichia coli (E. coli) | 0 Anzahl/100ml | 0/100 ml | — | Mean · WGA Kaltenengers (WW), TW |
| Sulphate | 47 mg/L | 250 mg/l | 19 % | Mean · WGA Kaltenengers (WW), TW |
| Sodium | 30 mg/L | 200 mg/l | 15 % | Mean · WGA Kaltenengers (WW), TW |
* 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 · WGA Kaltenengers (WW), TW |
Chemical parameters (14)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Antimony | < 0.5 µg/L below limit of quantification | 5 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Arsenic | 1.1 µg/L | 10 µg/l | 11 % | Mean · WGA Kaltenengers (WW), TW |
| Boron | < 0.1 mg/L below limit of quantification | 1 mg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Cadmium | < 0.3 µg/L below limit of quantification | 3 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Copper | < 0.05 mg/L below limit of quantification | 2 mg/l | < 3 % * | Mean · WGA Kaltenengers (WW), TW |
| Cyanide | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Fluoride | < 0.15 mg/L below limit of quantification | 1.5 mg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Lead | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Mercury | < 0.1 µg/L below limit of quantification | 1 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Nickel | < 2 µg/L below limit of quantification | 20 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Nitrate | 11 mg/L | 50 mg/l | 22 % | Mean · WGA Kaltenengers (WW), TW |
| Nitrite | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Selenium | < 1 µg/L below limit of quantification | 10 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Uranium | 1.2 µg/L | 10 µg/l | 12 % | Mean · WGA Kaltenengers (WW), TW |
* 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 | 0.01 µg/L | 0.1 µg/l | 10 % | Mean · WGA Kaltenengers (WW), TW |
Indicator parameters (10)
| 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 · WGA Kaltenengers (WW), TW |
| Ammonium | < 0.05 mg/L below limit of quantification | 0.5 mg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Chloride | 46 mg/L | 250 mg/l | 18 % | Mean · WGA Kaltenengers (WW), TW |
| Coliform bacteria | 0 Anzahl/100ml | 0/100 ml | — | Mean · WGA Kaltenengers (WW), TW |
| Iron | < 0.02 mg/L below limit of quantification | 0.2 mg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| Manganese | < 0.005 mg/L below limit of quantification | 50 µg/l | < 10 % * | Mean · WGA Kaltenengers (WW), TW |
| pH | 7.87 - | 6,5–9,5 | — | Mean · WGA Kaltenengers (WW), TW |
| Sodium | 30 mg/L | 200 mg/l | 15 % | Mean · WGA Kaltenengers (WW), TW |
| Sulphate | 47 mg/L | 250 mg/l | 19 % | Mean · WGA Kaltenengers (WW), TW |
| Temperature | 17 °C | — | — | Mean · WGA Kaltenengers (WW), TW |
* 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 | 73 mg/L | — | — | Mean · WGA Kaltenengers (WW), TW |
| Magnesium | 14 mg/L | — | — | Mean · WGA Kaltenengers (WW), TW |
| Potassium | 4.3 mg/L | — | — | Mean · WGA Kaltenengers (WW), TW |
| Total hardness | 2.44 mmol/l | — | — | Mean · WGA Kaltenengers (WW), TW |
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: 56179
Frequently asked questions about drinking water in Vallendar
- How hard is the water in Vallendar?
- TWIST RLP - Feisternacht (WW), TW,HB Ziegenbusch publishes a total hardness of 1.36 mmol/l for the supply zone Feisternacht (WW), TW,HB Ziegenbusch — that corresponds to 7.6 °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 Vallendar?
- TWIST RLP - Feisternacht (WW), TW,HB Ziegenbusch publishes a nitrate value of 8.9 mg/L for the supply zone Feisternacht (WW), TW,HB Ziegenbusch. The statutory parametric value is 50 mg/l; the measured value represents 18 % of the parametric value. Basis: Publication by the water supplier, retrieved on 13/07/2026.
- Who supplies the drinking water in Vallendar?
- TWIST RLP - Feisternacht (WW), TW,HB Ziegenbusch. The values shown here come from the supply zone Feisternacht (WW), TW,HB Ziegenbusch 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.