Drinking water in Theres
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.
Theres-Gruppe
Zweckverband zur Wasserversorgung der Theres-GruppeAssigned 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 | 8,4 mg/l | 50 mg/l | 17 % | Single value · Theres-Gruppe |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Single value · Theres-Gruppe |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Single value · Theres-Gruppe |
Show all recorded parameters (13 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | 0,16 mg/l | 1.5 mg/l | 11 % | Single value · Theres-Gruppe |
| Mercury | <0,0001 mg/l below limit of quantification | 1 µg/l | < 10 % * | Single value · Theres-Gruppe |
| Nitrate | 8,4 mg/l | 50 mg/l | 17 % | Single value · Theres-Gruppe |
| Nitrite | <0,030 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Single value · Theres-Gruppe |
* 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 (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 40 mg/l | 250 mg/l | 16 % | Single value · Theres-Gruppe |
| Sodium | 24 mg/l | 200 mg/l | 12 % | Single value · Theres-Gruppe |
| Sulphate | 91 mg/l | 250 mg/l | 36 % | Single value · Theres-Gruppe |
Further parameters (6)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 89 mg/l | — | — | Single value · Theres-Gruppe |
| Hardness range (WRMG) | hart | — | — | Single value · Theres-Gruppe |
| Magnesium | 23 mg/l | — | — | Single value · Theres-Gruppe |
| Oxygen | 6,5 mg/l | — | — | Single value · Theres-Gruppe |
| Potassium | 4,6 mg/l | — | — | Single value · Theres-Gruppe |
| Total hardness | 19 °dH | — | — | Single value · Theres-Gruppe |
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: 97531
Show 2 more supply zones
WSG Schweinfurt
Zweckverband zur Wasserversorgung der Theres-GruppeAssigned 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 | 5,0 - 17,3 mg/l | 50 mg/l | — | Single value · WSG Schweinfurt |
| Sulphate | 117 - 151 mg/l | 250 mg/l | — | Single value · WSG Schweinfurt |
| Sodium | 21,6 - 28,0 mg/l | 200 mg/l | — | Single value · WSG Schweinfurt |
Show all recorded parameters (13 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | <0,15 - 0,33 mg/l below limit of quantification | 1.5 mg/l | — | Single value · WSG Schweinfurt |
| Nitrate | 5,0 - 17,3 mg/l | 50 mg/l | — | Single value · WSG Schweinfurt |
| Nitrite | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Single value · WSG Schweinfurt |
| Uranium | 0,001 mg/l | 10 µg/l | 10 % | Single value · WSG Schweinfurt |
* 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 35,6 - 45,4 mg/l | 250 mg/l | — | Single value · WSG Schweinfurt |
| pH | 7,67 - 7,82 | 6,5–9,5 | — | Single value · WSG Schweinfurt |
| Sodium | 21,6 - 28,0 mg/l | 200 mg/l | — | Single value · WSG Schweinfurt |
| Sulphate | 117 - 151 mg/l | 250 mg/l | — | Single value · WSG Schweinfurt |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 97,8 - 114,0 mg/l | — | — | Single value · WSG Schweinfurt |
| Hardness range (WRMG) | Hart | — | — | Single value · WSG Schweinfurt |
| Magnesium | 23,1 - 26,0 mg/l | — | — | Single value · WSG Schweinfurt |
| Potassium | 0,10 - 0,14 mg/l | — | — | Single value · WSG Schweinfurt |
| Total hardness | 19,6 - 21,4 °dh | — | — | Single value · WSG Schweinfurt |
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: 97531
Assigned 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 | 3,5 mg/l | 50 mg/l | 7 % | Single value · WSG Wonfurt |
| Sulphate | 93 mg/l | 250 mg/l | 37 % | Single value · WSG Wonfurt |
| Sodium | 24,0 mg/l | 200 mg/l | 12 % | Single value · WSG Wonfurt |
Show all recorded parameters (13 — most recent value per parameter)
Chemical parameters (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Fluoride | 0,20 mg/l | 1.5 mg/l | 13 % | Single value · WSG Wonfurt |
| Nitrate | 3,5 mg/l | 50 mg/l | 7 % | Single value · WSG Wonfurt |
| Nitrite | < 0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Single value · WSG Wonfurt |
| Uranium | 0,001 mg/l | 10 µg/l | 10 % | Single value · WSG Wonfurt |
* 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 (4)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chloride | 37,0 mg/l | 250 mg/l | 15 % | Single value · WSG Wonfurt |
| pH | 7,27 | 6,5–9,5 | — | Single value · WSG Wonfurt |
| Sodium | 24,0 mg/l | 200 mg/l | 12 % | Single value · WSG Wonfurt |
| Sulphate | 93 mg/l | 250 mg/l | 37 % | Single value · WSG Wonfurt |
Further parameters (5)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 94,0 mg/l | — | — | Single value · WSG Wonfurt |
| Hardness range (WRMG) | Hart | — | — | Single value · WSG Wonfurt |
| Magnesium | 28,0 mg/l | — | — | Single value · WSG Wonfurt |
| Potassium | 4,7 mg/l | — | — | Single value · WSG Wonfurt |
| Total hardness | 19,7 °dh | — | — | Single value · WSG Wonfurt |
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: 97531
Frequently asked questions about drinking water in Theres
- How hard is the water in Theres?
- Zweckverband zur Wasserversorgung der Theres-Gruppe publishes a total hardness of 19 °dH for the supply zone Theres-Gruppe (hardness range hart). 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 08/08/2026.
- How much nitrate is in the drinking water in Theres?
- Zweckverband zur Wasserversorgung der Theres-Gruppe publishes a nitrate value of 8,4 mg/l for the supply zone Theres-Gruppe. The statutory parametric value is 50 mg/l; the measured value represents 17 % of the parametric value. Basis: Publication by the water supplier, retrieved on 08/08/2026.
- Who supplies the drinking water in Theres?
- Zweckverband zur Wasserversorgung der Theres-Gruppe. The values shown here come from the supply zone Theres-Gruppe 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.