Drinking water in Bad Salzdetfurth
One supply zone, water supplier: Harzwasserwerke.
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.
WW Grane II (West) / Reinwasser
HarzwasserwerkeAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
Water hardness
3.0
Hardness range weich
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Nitrate | 7.4 Unit not stated in the document | 50 mg/l | — | Mean |
| Lead | <0.001 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
| Sulphate | 26.3 Unit not stated in the document | 250 mg/l | — | Mean |
| Sodium | 0.341 Unit not stated in the document | 200 mg/l | — | Mean |
Show all recorded parameters (65 — most recent value per parameter)
Microbiology (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Escherichia coli (E. coli) | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
| Intestinal enterococci | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
Chemical parameters (29)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| 1,2-dichloroethane | <0.0001 below limit of quantification Unit not stated in the document | 3 µg/l | — | Mean |
| 2,6-Dichlorobenzamide (BAM) | <0.000025 below limit of quantification | — | — | Mean |
| Antimony | <0.0005 below limit of quantification Unit not stated in the document | 5 µg/l | — | Mean |
| Arsenic | <0.0005 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Benzene | <0.0001 below limit of quantification Unit not stated in the document | 1 µg/l | — | Mean |
| Benzo(a)pyrene | <0.00001 below limit of quantification Unit not stated in the document | 10 ng/l | — | Mean |
| Bisphenol A | <0.0001 below limit of quantification Unit not stated in the document | 2.5 µg/l | — | Mean |
| Boron | <0.05 below limit of quantification Unit not stated in the document | 1 mg/l | — | Mean |
| Bromate | <0.01 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Cadmium | <0.001 below limit of quantification Unit not stated in the document | 3 µg/l | — | Mean |
| Chlorite | n.b. not determined Unit not stated in the document | 0.2 mg/l | — | Mean |
| Chromium | <0.001 below limit of quantification Unit not stated in the document | 25 µg/l | — | Mean |
| Copper | <0.001 below limit of quantification Unit not stated in the document | 2 mg/l | — | Mean |
| Cyanide | <0.001 below limit of quantification Unit not stated in the document | 50 µg/l | — | Mean |
| Dimethachlor sulfonic acid | <0.000025 below limit of quantification | — | — | Mean |
| Fluoride | 0.05 Unit not stated in the document | 1.5 mg/l | — | Mean |
| Lead | <0.001 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Mercury | <0.0001 below limit of quantification Unit not stated in the document | 1 µg/l | — | Mean |
| Metazachlor acid | <0.000025 below limit of quantification | — | — | Mean |
| Metazachlor sulfonic acid | <0.000025 below limit of quantification | — | — | Mean |
| Metolachlor acid | <0.000025 below limit of quantification | — | — | Mean |
| Metolachlor sulfonic acid | <0.000025 below limit of quantification | — | — | Mean |
| Nickel | <0.001 below limit of quantification Unit not stated in the document | 20 µg/l | — | Mean |
| Nitrate | 7.4 Unit not stated in the document | 50 mg/l | — | Mean |
| Nitrite | 0.002 Unit not stated in the document | 0.5 mg/l | — | Mean |
| Polycyclic aromatic hydrocarbons | <0.0001 below limit of quantification Unit not stated in the document | 0.1 µg/l | — | Mean |
| Selenium | <0.0005 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
| Tetrachloromethane | <0.0001 below limit of quantification | — | — | Mean |
| Uranium | <0.0001 below limit of quantification Unit not stated in the document | 10 µg/l | — | Mean |
PFAS (1)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Trifluoroacetic acid (TFA) | 0.000657 Unit not stated in the document | 60 µg/l UBA guide value | — | Mean |
For trifluoroacetic acid (TFA), the German Drinking Water Ordinance does not specify a parametric value. The comparison is therefore made with the guide value of 60 µg/l issued by the Umweltbundesamt, which has replaced the earlier health-related guidance value of 3 µg/l. A guide value is not a legal maximum but a health-related classification.
Indicator parameters (19)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Aluminium | 0.016 Unit not stated in the document | 0.2 mg/l | — | Mean |
| Ammonium | <0.03 below limit of quantification Unit not stated in the document | 0.5 mg/l | — | Mean |
| Calcite dissolution capacity | -0.6 Unit not stated in the document | 5 mg/l CaCO3 | — | Mean |
| Chloride | 10.5 Unit not stated in the document | 250 mg/l | — | Mean |
| Clostridium perfringens (including spores) | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
| Coliform bacteria | 0 Unit not stated in the document | 0/100 ml | — | Maximum · Median 0 |
| Colony count 22 °C | 0 | ohne anormale Veränderung | — | Mean |
| Colony count 36 °C | 0 | ohne anormale Veränderung | — | Mean |
| Colour | 0.06 Unit not stated in the document | 0.5 m⁻¹ | — | Mean |
| Iron | <0.001 below limit of quantification Unit not stated in the document | 0.2 mg/l | — | Mean |
| Manganese | <0.001 below limit of quantification Unit not stated in the document | 50 µg/l | — | Mean |
| pH | 8.93 | 6,5–9,5 | — | Mean |
| Sodium | 0.341 Unit not stated in the document | 200 mg/l | — | Mean |
| Sulphate | 26.3 Unit not stated in the document | 250 mg/l | — | Mean |
| Taste | ohne | für den Verbraucher annehmbar | — | Mean |
| Temperature | 8.4 | — | — | Mean |
| Threshold odour number (TON) | 1 | — | — | Mean |
| Total organic carbon (TOC) | 1.5 | ohne anormale Veränderung | — | Mean |
| Turbidity | 0.04 Unit not stated in the document | 1 NTU | — | Mean |
Treatment substances (2)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Chlorine dioxide | n.b. not determined | — | — | Mean |
| Total chlorine | 0.12 | — | — | Mean |
Further parameters (12)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Barium | 0.03 | — | — | Mean |
| Calcium | 0.413 | — | — | Mean |
| Carbonate hardness | 2.0 | — | — | Mean |
| Hardness range (WRMG) | weich | — | — | Mean |
| Magnesium | 0.119 | — | — | Mean |
| Oxygen | 11.3 | — | — | Mean |
| Phosphate | <0.005 below limit of quantification | — | — | Mean |
| Potassium | 0.023 | — | — | Mean |
| Silicate / silicic acid | 2.5 | — | — | Mean |
| Sum of alkaline earth metals | 0.532 | — | — | Mean |
| Total hardness | 3.0 | — | — | Mean |
| Zinc | 0.020 | — | — | Mean |
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://www.swbsd.de/tl_files/website/2026/Trinkwasseranalyse%202%20WW%20Grane%20II%20Reinwasser%202025.pdf · Monatsanalysen aus 2025 · retrieved on 11/07/2026
Postcodes in this zone: 31162
Frequently asked questions about drinking water in Bad Salzdetfurth
- How hard is the water in Bad Salzdetfurth?
- Harzwasserwerke publishes the hardness range weich for the supply zone WW Grane II (West) / Reinwasser. 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 11/07/2026.
- Who supplies the drinking water in Bad Salzdetfurth?
- Harzwasserwerke. The values shown here come from the supply zone WW Grane II (West) / Reinwasser 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.