Drinking water in Roggwil BE
5 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.
Gemeindegebiet Roggwil
Gemeindebetriebe Roggwil (GBR)Assigned 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 31/12/2024. 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 | 25.55 mg/l | 40 mg/l | 64 % | Mean · Gemeindegebiet Roggwil |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeindegebiet Roggwil |
| Sulphate | 16.3 mg/l | — | — | Mean · Gemeindegebiet Roggwil |
Show all recorded parameters (9 — most recent value per parameter)
Microbiology (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aerobic mesophilic bacteria | nn not detectable Unit not stated in the document | 300 1/ml | — | Mean · Gemeindegebiet Roggwil |
| Escherichia coli (E. coli) | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeindegebiet Roggwil |
| Intestinal enterococci | nn not detectable Unit not stated in the document | 0/100 ml | — | Maximum · Median nn · Gemeindegebiet Roggwil |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 25.55 mg/l | 40 mg/l | 64 % | Mean · Gemeindegebiet Roggwil |
Indicator parameters (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 10.55 mg/l | — | — | Mean · Gemeindegebiet Roggwil |
| Sulphate | 16.3 mg/l | — | — | Mean · Gemeindegebiet Roggwil |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 111.45 mg/l | — | — | Mean · Gemeindegebiet Roggwil |
| Magnesium | 11 mg/l | — | — | Mean · Gemeindegebiet Roggwil |
| Total hardness | 32.3 °fH | — | — | Mean · Gemeindegebiet Roggwil |
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: 4914
Show 4 more supply zones
WUL: Mittlere Druckzone Aarwangen-Langenthal
Gemeindeverband Wasserversorgung untere Langete WULAssigned 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 | 22.8 mg/l | 40 mg/l | 57 % | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Sulphate | 9.2 mg/l | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Sodium | 7.4 mg/l | 200 mg/l | 4 % | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
Show all recorded parameters (12 — 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 · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Aarwangen-Langenthal |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 22.8 mg/l | 40 mg/l | 57 % | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 10.2 mg/l | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Sodium | 7.4 mg/l | 200 mg/l | 4 % | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Sulphate | 9.2 mg/l | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Temperature | 12.5 °C | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Turbidity | 0.01 TE/F | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 109.9 mg/l | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Magnesium | 15.9 mg/l | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
| Total hardness | 30.9 °fH | — | — | Mean · WUL: Mittlere Druckzone Aarwangen-Langenthal |
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: 4914
WUL: Mittlere Druckzone Roggwil-Wynau
Gemeindeverband Wasserversorgung untere Langete WULAssigned 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 | 21.8 mg/l | 40 mg/l | 55 % | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Roggwil-Wynau |
| Sulphate | 11.4 mg/l | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Sodium | 6.6 mg/l | 200 mg/l | 3 % | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
Show all recorded parameters (12 — 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 · WUL: Mittlere Druckzone Roggwil-Wynau |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Roggwil-Wynau |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Mittlere Druckzone Roggwil-Wynau |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 21.8 mg/l | 40 mg/l | 55 % | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 9.7 mg/l | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Sodium | 6.6 mg/l | 200 mg/l | 3 % | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Sulphate | 11.4 mg/l | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Temperature | 12.8 °C | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Turbidity | 0.01 TE/F | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 114.2 mg/l | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Magnesium | 13.3 mg/l | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
| Total hardness | 32.5 °fH | — | — | Mean · WUL: Mittlere Druckzone Roggwil-Wynau |
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: 4914
WUL: Obere Druckzone
Gemeindeverband Wasserversorgung untere Langete WULAssigned 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 | 22.5 mg/l | 40 mg/l | 56 % | Mean · WUL: Obere Druckzone |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Obere Druckzone |
| Sulphate | 9.2 mg/l | — | — | Mean · WUL: Obere Druckzone |
| Sodium | 7.5 mg/l | 200 mg/l | 4 % | Mean · WUL: Obere Druckzone |
Show all recorded parameters (12 — 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 · WUL: Obere Druckzone |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Obere Druckzone |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Obere Druckzone |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 22.5 mg/l | 40 mg/l | 56 % | Mean · WUL: Obere Druckzone |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 10.2 mg/l | — | — | Mean · WUL: Obere Druckzone |
| Sodium | 7.5 mg/l | 200 mg/l | 4 % | Mean · WUL: Obere Druckzone |
| Sulphate | 9.2 mg/l | — | — | Mean · WUL: Obere Druckzone |
| Temperature | 12.4 °C | — | — | Mean · WUL: Obere Druckzone |
| Turbidity | 0.01 TE/F | — | — | Mean · WUL: Obere Druckzone |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 110.3 mg/l | — | — | Mean · WUL: Obere Druckzone |
| Magnesium | 16 mg/l | — | — | Mean · WUL: Obere Druckzone |
| Total hardness | 31.6 °fH | — | — | Mean · WUL: Obere Druckzone |
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: 4914
WUL: Untere Druckzone
Gemeindeverband Wasserversorgung untere Langete WULAssigned 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 | 21 mg/l | 40 mg/l | 53 % | Mean · WUL: Untere Druckzone |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Untere Druckzone |
| Sulphate | 11.2 mg/l | — | — | Mean · WUL: Untere Druckzone |
| Sodium | 7.1 mg/l | 200 mg/l | 4 % | Mean · WUL: Untere Druckzone |
Show all recorded parameters (12 — 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 · WUL: Untere Druckzone |
| Escherichia coli (E. coli) | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Untere Druckzone |
| Intestinal enterococci | 0 KBE/100ml | 0/100 ml | — | Maximum · Median 0 · WUL: Untere Druckzone |
Chemical parameters (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 21 mg/l | 40 mg/l | 53 % | Mean · WUL: Untere Druckzone |
Indicator parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 10.2 mg/l | — | — | Mean · WUL: Untere Druckzone |
| Sodium | 7.1 mg/l | 200 mg/l | 4 % | Mean · WUL: Untere Druckzone |
| Sulphate | 11.2 mg/l | — | — | Mean · WUL: Untere Druckzone |
| Temperature | 13 °C | — | — | Mean · WUL: Untere Druckzone |
| Turbidity | 0.01 TE/F | — | — | Mean · WUL: Untere Druckzone |
Further parameters (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 112.9 mg/l | — | — | Mean · WUL: Untere Druckzone |
| Magnesium | 13.7 mg/l | — | — | Mean · WUL: Untere Druckzone |
| Total hardness | 32.3 °fH | — | — | Mean · WUL: Untere Druckzone |
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: 4914
Frequently asked questions about drinking water in Roggwil BE
- How hard is the water in Roggwil BE?
- Gemeindebetriebe Roggwil (GBR) publishes a total hardness of 32.3 °fH for the supply zone Gemeindegebiet Roggwil — that corresponds to 18.1 °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: 2024, retrieved on 07/08/2026.
- How much nitrate is in the drinking water in Roggwil BE?
- Gemeindebetriebe Roggwil (GBR) publishes a nitrate value of 25.55 mg/l for the supply zone Gemeindegebiet Roggwil. The statutory parametric value is 40 mg/l; the measured value represents 64 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.
- Who supplies the drinking water in Roggwil BE?
- Gemeindebetriebe Roggwil (GBR). The values shown here come from the supply zone Gemeindegebiet Roggwil 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.