How hard is the water in Rafz?

Wasserversorgung Rafz publishes a total hardness of 28.2 °fH for the supply zone Wasserversorgung Rafz — that corresponds to 15.8 °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: 2023, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Rafz?

Wasserversorgung Rafz publishes a nitrate value of 15.3 mg/l for the supply zone Wasserversorgung Rafz. The statutory parametric value is 40 mg/l; the measured value represents 38 % of the parametric value. Basis: 2023, retrieved on 07/08/2026.

Who supplies the drinking water in Rafz?

Wasserversorgung Rafz. The values shown here come from the supply zone Wasserversorgung Rafz 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.

Drinking water in Rafz

One supply zone, water supplier: Wasserversorgung Rafz.

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.

Wasserversorgung Rafz

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 31/12/2023. 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.

Water hardness

15.8 °dH

Hardness range hard

Key values Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	15.3 mg/l	40 mg/l	38 %	Mean · Wasserversorgung Rafz
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wasserversorgung Rafz
Sulphate	25.6 mg/l	—	—	Mean · Wasserversorgung Rafz
Sodium	7 mg/l	200 mg/l	3 %	Mean · Wasserversorgung Rafz

Show all recorded parameters (17 — most recent value per parameter)

Microbiology (3)

Microbiology – Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	23 KBE/ml	300 1/ml	—	Mean · Wasserversorgung Rafz
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wasserversorgung Rafz
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wasserversorgung Rafz

Chemical parameters (2)

Chemical parameters – Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	0 mg/l	1.5 mg/l	0 %	Mean · Wasserversorgung Rafz
Nitrate	15.3 mg/l	40 mg/l	38 %	Mean · Wasserversorgung Rafz

Metabolites (2)

Metabolites – Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.166 µg/l	0.1 µg/l	166 % Mean above the parametric value	Mean · Wasserversorgung Rafz
Chlorothalonil metabolite R471811	0.4725 µg/l	0.1 µg/l	472 % Mean above the parametric value	Mean · Wasserversorgung Rafz

Annual means and medians are not individual measured values, but the parametric values apply per sample. If a mean lies above it, at least one individual sample was above it — the mean does not say how many, or by how much. That is why this is not reported here as an exceedance of the parametric value. What counts remains the water supplier's publication, which each row links to.

Indicator parameters (6)

Indicator parameters – Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	13.1 mg/l	—	—	Mean · Wasserversorgung Rafz
Conductivity (25 °C)	495 µS/cm	—	—	Mean · Wasserversorgung Rafz
pH	7.5	—	—	Mean · Wasserversorgung Rafz
Sodium	7 mg/l	200 mg/l	3 %	Mean · Wasserversorgung Rafz
Sulphate	25.6 mg/l	—	—	Mean · Wasserversorgung Rafz
Temperature	7.5 °C	—	—	Mean · Wasserversorgung Rafz

Further parameters (4)

Further parameters – Wasserversorgung Rafz
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	79.4 mg/l	—	—	Mean · Wasserversorgung Rafz
Magnesium	20.5 mg/l	—	—	Mean · Wasserversorgung Rafz
Potassium	1.2 mg/l	—	—	Mean · Wasserversorgung Rafz
Total hardness	28.2 °fH	—	—	Mean · Wasserversorgung Rafz

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/1066/wasserversorgung-rafz/597/wasserversorgung-rafz · 2023 · 2023 · retrieved on 07/08/2026

Postcodes in this zone: 8197

Frequently asked questions about drinking water in Rafz

How hard is the water in Rafz?: Wasserversorgung Rafz publishes a total hardness of 28.2 °fH for the supply zone Wasserversorgung Rafz — that corresponds to 15.8 °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: 2023, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Rafz?: Wasserversorgung Rafz publishes a nitrate value of 15.3 mg/l for the supply zone Wasserversorgung Rafz. The statutory parametric value is 40 mg/l; the measured value represents 38 % of the parametric value. Basis: 2023, retrieved on 07/08/2026.
Who supplies the drinking water in Rafz?: Wasserversorgung Rafz. The values shown here come from the supply zone Wasserversorgung Rafz 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.