Drinking water in 64347
One supply zone, water supplier: Stadtwerke Griesheim (Trinkwasser von Hessenwasser GmbH & Co. KG, Versorgungsgebiet Darmstadt).
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.
Versorgungsgebiet DA und umliegende Gemeinden: Darmstadt (alle Ortsteile), Riedstadt (alle Ortsteile), Weiterstadt (alle Ortsteile), Biebesheim, Erzhausen, Griesheim, Stockstadt, Seeheim-Jugenheim (Teilversorgung), Mühltal OT Traisa (Vollversorgung), OT Nieder-Ramstadt (Teilversorgung) und Ober-Ramstadt (Teilversorgung)
Stadtwerke Griesheim (Trinkwasser von Hessenwasser GmbH & Co. KG, Versorgungsgebiet Darmstadt)Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
19.6 °dH
Hardness range hart (3)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | <0,000 004 mg/l below limit of quantification | — | — | Single value |
| Nitrate | 20,1 mg/l | 50 mg/l | 40 % | Maximum |
| Lead | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Single value |
| Sulphate | 99,8 mg/l | 250 mg/l | 40 % | Maximum |
| Sodium | 12,5 mg/l | 200 mg/l | 6 % | Maximum |
* 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 (60 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Anzahl/100 ml | 0/100 ml | — | Single value |
| Intestinal enterococci | 0 Anzahl/100 ml | 0/100 ml | — | Single value |
Chemical parameters (26)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0,002 mg/l below limit of quantification | 3 µg/l | < 67 % * | Single value |
| Antimony | <0,000 1 mg/l below limit of quantification | 5 µg/l | < 2 % * | Single value |
| Arsenic | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Benzene | <0,000 2 mg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Benzo(a)pyrene | <0,000 002 mg/l below limit of quantification | 10 ng/l | < 20 % * | Single value |
| Bisphenol A | <0,000 05 mg/l below limit of quantification | 2.5 µg/l | < 2 % * | Single value |
| Boron | <0,05 mg/l below limit of quantification | 1 mg/l | < 5 % * | Single value |
| Bromate | <0,005 mg/l below limit of quantification | 10 µg/l | < 50 % * | Single value |
| Cadmium | <0,001 mg/l below limit of quantification | 3 µg/l | < 33 % * | Single value |
| Chromium | <0,005 mg/l below limit of quantification | 25 µg/l | < 20 % * | Single value |
| Copper | <0,02 mg/l below limit of quantification | 2 mg/l | < 1 % * | Single value |
| Cyanide | <0,005 mg/l below limit of quantification | 50 µg/l | < 10 % * | Single value |
| Fluoride | <0,1 mg/l below limit of quantification | 1.5 mg/l | < 7 % * | Single value |
| Lead | <0,003 mg/l below limit of quantification | 10 µg/l | < 30 % * | Single value |
| Mercury | <0,000 2 mg/l below limit of quantification | 1 µg/l | < 20 % * | Single value |
| Nickel | <0,001 mg/l below limit of quantification | 20 µg/l | < 5 % * | Single value |
| Nitrate | 20,1 mg/l | 50 mg/l | 40 % | Maximum |
| Nitrite | <0,05 mg/l below limit of quantification | 0.5 mg/l | < 10 % * | Single value |
| Pesticides | < Bestimmungsgrenzen mg/l below limit of quantification | 0.1 µg/l | — | Single value |
| Pesticides — Total | < Bestimmungsgrenzen mg/l below limit of quantification | 0.5 µg/l | — | Single value |
| Polycyclic aromatic hydrocarbons | <Bestimmungsgrenzen mg/l below limit of quantification | 0.1 µg/l | — | Single value |
| Selenium | <0,002 mg/l below limit of quantification | 10 µg/l | < 20 % * | Single value |
| Tetrachloroethene and Trichloroethene (sum) | < Bestimmungsgrenzen mg/l below limit of quantification | 10 µg/l | — | Single value |
| Trihalomethanes — Total | <0,015 mg/l below limit of quantification | 50 µg/l | < 30 % * | Single value |
| Uranium | 0,0019 mg/l | 10 µg/l | 19 % | Maximum |
| Vinyl chloride | <0,000 2 mg/l below limit of quantification | 0.5 µg/l | < 40 % * | Single value |
* 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 (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of 4 PFAS | 0,000 002 mg/l | — | — | Single value |
| Sum of PFAS | <0,000 004 mg/l below limit of quantification | — | — | Single value |
Indicator parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | <0,015 mg/l below limit of quantification | 0.2 mg/l | < 8 % * | Single value |
| Ammonium | <0,03 mg/l below limit of quantification | 0.5 mg/l | < 6 % * | Single value |
| Calcite dissolution capacity | negativ Unit not stated in the document | 5 mg/l CaCO3 | — | Single value |
| Chloride | 32,6 mg/l | 250 mg/l | 13 % | Maximum |
| Coliform bacteria | 0 Anzahl/100 ml | 0/100 ml | — | Single value |
| Colony count 22 °C | 0 - | ohne anormale Veränderung | — | Single value |
| Colony count 36 °C | 3 - | ohne anormale Veränderung | — | Maximum |
| Colour | <0,2 m-1 below limit of quantification | 0.5 m⁻¹ | — | Single value |
| Conductivity (25 °C) | 709 µS/cm | 2,790 µS/cm | — | Maximum |
| Iron | 0,01 mg/l | 0.2 mg/l | 5 % | Maximum |
| Manganese | 0,001 mg/l | 50 µg/l | 2 % | Maximum |
| Odour | ohne - | für den Verbraucher annehmbar | — | Single value |
| pH | 7,63 pH-Einheiten | 6,5–9,5 | — | Maximum |
| Sodium | 12,5 mg/l | 200 mg/l | 6 % | Maximum |
| Sulphate | 99,8 mg/l | 250 mg/l | 40 % | Maximum |
| Taste | keine Auffälligkeiten - | für den Verbraucher annehmbar | — | Single value |
| Temperature | 14,9 °C | — | — | Maximum |
| Total organic carbon (TOC) | 0,77 mg/l | ohne anormale Veränderung | — | Maximum |
| Turbidity | <0,3 NTU below limit of quantification | 1 NTU | — | Single value |
* 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 (11)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Calcium | 109 mg/l | — | — | Maximum |
| Carbonate hardness | 2,3 mmol/l | — | — | Maximum |
| Free carbon dioxide | 13,4 g/m³ | — | — | Maximum |
| Hardness range (WRMG) | hart (3) - | — | — | Single value |
| Hydrogen carbonate | 280 mg/l | — | — | Maximum |
| Magnesium | 20,2 mg/l | — | — | Maximum |
| Oxygen | 9,6 g/m³ | — | — | Maximum |
| Phosphate | <0,05 mg/l P below limit of quantification | — | — | Single value |
| Potassium | 3,7 mg/l | — | — | Maximum |
| Silicate / silicic acid | 15,7 g/m³ | — | — | Maximum |
| Total hardness | 3,5 mmol/l | — | — | Maximum |
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.
Frequent questions about postcode 64347
- How hard is the water in Postcode 64347?
- Stadtwerke Griesheim (Trinkwasser von Hessenwasser GmbH & Co. KG, Versorgungsgebiet Darmstadt) publishes a total hardness of 3,5 mmol/l for the supply zone Versorgungsgebiet DA und umliegende Gemeinden: Darmstadt (alle Ortsteile), Riedstadt (alle Ortsteile), Weiterstadt (alle Ortsteile), Biebesheim, Erzhausen, Griesheim, Stockstadt, Seeheim-Jugenheim (Teilversorgung), Mühltal OT Traisa (Vollversorgung), OT Nieder-Ramstadt (Teilversorgung) und Ober-Ramstadt (Teilversorgung) — that corresponds to 19.6 °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: Stand: 2025, retrieved on 11/07/2026.
- How much nitrate is in the drinking water in Postcode 64347?
- Stadtwerke Griesheim (Trinkwasser von Hessenwasser GmbH & Co. KG, Versorgungsgebiet Darmstadt) publishes a nitrate value of 20,1 mg/l for the supply zone Versorgungsgebiet DA und umliegende Gemeinden: Darmstadt (alle Ortsteile), Riedstadt (alle Ortsteile), Weiterstadt (alle Ortsteile), Biebesheim, Erzhausen, Griesheim, Stockstadt, Seeheim-Jugenheim (Teilversorgung), Mühltal OT Traisa (Vollversorgung), OT Nieder-Ramstadt (Teilversorgung) und Ober-Ramstadt (Teilversorgung). The statutory parametric value is 50 mg/l; the measured value represents 40 % of the parametric value. Basis: Stand: 2025, retrieved on 11/07/2026.
- Who supplies the drinking water in Postcode 64347?
- Stadtwerke Griesheim (Trinkwasser von Hessenwasser GmbH & Co. KG, Versorgungsgebiet Darmstadt). The values shown here come from the supply zone Versorgungsgebiet DA und umliegende Gemeinden: Darmstadt (alle Ortsteile), Riedstadt (alle Ortsteile), Weiterstadt (alle Ortsteile), Biebesheim, Erzhausen, Griesheim, Stockstadt, Seeheim-Jugenheim (Teilversorgung), Mühltal OT Traisa (Vollversorgung), OT Nieder-Ramstadt (Teilversorgung) und Ober-Ramstadt (Teilversorgung) 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.