Drinking water in Eriz
4 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
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.
WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen
Gemeindeverband WV ZulgtalAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
8.2 °dH
Hardness range soft
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7.8 mg/l | 40 mg/l | 19 % | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Sulphate | 4.5 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Sodium | 2 mg/l | 200 mg/l | 1 % | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 9 KBE/ml | 300 1/ml | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Nitrate | 7.8 mg/l | 40 mg/l | 19 % | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
* 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 (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 2.2 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Conductivity (25 °C) | 363.7 µS/cm | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| pH | 7.6 | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Sodium | 2 mg/l | 200 mg/l | 1 % | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Sulphate | 4.5 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Temperature | 14.1 °C | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Turbidity | 0.4 TE/F | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 64.8 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Hydrogen carbonate | 213.2 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Magnesium | 5.8 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Potassium | 1.3 mg/l | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
| Total hardness | 14.6 °fH | — | — | Mean · WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen |
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://trinkwasser.ch/de/versorger/1084/gemeindeverband-wv-zulgtal/3165/wv-zulgtal-reservoir-durren-gemeinde-oberlangenegg-suderen · 2025 · 2025 · retrieved on 07/08/2026
Postcodes in this zone: 3619
Show 3 more supply zones
WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn
Gemeindeverband WV ZulgtalAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
16.7 °dH
Hardness range hard
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 21.05 mg/l | 40 mg/l | 53 % | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Sulphate | 6.05 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Sodium | 11.25 mg/l | 200 mg/l | 6 % | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
Show all recorded parameters (17 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 1.2 KBE/ml | 300 1/ml | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.05 mg/l below limit of quantification | 1.5 mg/l | < 3 % * | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Nitrate | 21.05 mg/l | 40 mg/l | 53 % | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
* 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 (7)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 20.85 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Conductivity (25 °C) | 605 µS/cm | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| pH | 7.35 | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Sodium | 11.25 mg/l | 200 mg/l | 6 % | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Sulphate | 6.05 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Temperature | 11.9 °C | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Turbidity | 0.3 TE/F | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 102.5 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Hydrogen carbonate | 324.9 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Magnesium | 8 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Potassium | 3 mg/l | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
| Total hardness | 29.8 °fH | — | — | Mean · WV Zulgtal Reservoir Farnere & Flue: Gemeinde Buchholterberg & Wachseldorn |
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://trinkwasser.ch/de/versorger/1084/gemeindeverband-wv-zulgtal/3140/wv-zulgtal-reservoir-farnere-flue-gemeinde-buchholterberg-wachseldorn · 2025 · 2025 · retrieved on 07/08/2026
Postcodes in this zone: 3619
WV Zulgtal Reservoir Schwand & Chapferen, Eriz
Gemeindeverband WV ZulgtalAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
6.1 °dH
Hardness range soft
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3 mg/l | 40 mg/l | 8 % | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Sulphate | 4.9 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Sodium | 0.5 mg/l | 200 mg/l | 0.3 % | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
Show all recorded parameters (16 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 1.5 KBE/ml | 300 1/ml | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Nitrate | 3 mg/l | 40 mg/l | 8 % | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 2 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Conductivity (25 °C) | 207 µS/cm | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| pH | 7.9 | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Sodium | 0.5 mg/l | 200 mg/l | 0.3 % | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Sulphate | 4.9 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Temperature | 10.9 °C | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 38.1 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Hydrogen carbonate | 121.8 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Magnesium | 2.8 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Potassium | 0.5 mg/l | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
| Total hardness | 10.9 °fH | — | — | Mean · WV Zulgtal Reservoir Schwand & Chapferen, Eriz |
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://trinkwasser.ch/de/versorger/1084/gemeindeverband-wv-zulgtal/3166/wv-zulgtal-reservoir-schwand-chapferen-eriz · 2025 · 2025 · retrieved on 07/08/2026
Postcodes in this zone: 3619
WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz
Gemeindeverband WV ZulgtalAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
12.3 °dH
Hardness range medium
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 3.7 mg/l | 40 mg/l | 9 % | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Sulphate | 1.3 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Sodium | 0.7 mg/l | 200 mg/l | 0.4 % | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
Show all recorded parameters (16 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | 0 KBE/ml | 300 1/ml | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
Chemical parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | < 0.1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Nitrate | 3.7 mg/l | 40 mg/l | 9 % | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
* 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 (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 2 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Conductivity (25 °C) | 404 µS/cm | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| pH | 7.4 | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Sodium | 0.7 mg/l | 200 mg/l | 0.4 % | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Sulphate | 1.3 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Temperature | 8.7 °C | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 82.8 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Hydrogen carbonate | 258.9 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Magnesium | 1.4 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Potassium | 0.4 mg/l | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
| Total hardness | 21.9 °fH | — | — | Mean · WV Zulgtal Reservoir Unterschwand & Ferienheime, Innereriz |
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://trinkwasser.ch/de/versorger/1084/gemeindeverband-wv-zulgtal/3167/wv-zulgtal-reservoir-unterschwand-ferienheime-innereriz · 2025 · 2025 · retrieved on 07/08/2026
Postcodes in this zone: 3619
Frequently asked questions about drinking water in Eriz
- How hard is the water in Eriz?
- Gemeindeverband WV Zulgtal publishes a total hardness of 14.6 °fH for the supply zone WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen — that corresponds to 8.2 °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: 2025, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Eriz?
- Gemeindeverband WV Zulgtal publishes a nitrate value of 7.8 mg/l for the supply zone WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen. The statutory parametric value is 40 mg/l; the measured value represents 19 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
- Who supplies the drinking water in Eriz?
- Gemeindeverband WV Zulgtal. The values shown here come from the supply zone WV Zulgtal Reservoir Dürren: Gemeinde Oberlangenegg & Süderen 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.