How hard is the water in Otelfingen?

Wasserversorgung Otelfingen publishes a total hardness of 34.5 °fH for the supply zone Gemeindegebiet Otelfingen — that corresponds to 19.3 °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: 2022, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Otelfingen?

Wasserversorgung Otelfingen publishes a nitrate value of 18.73 mg/l for the supply zone Gemeindegebiet Otelfingen. The statutory parametric value is 40 mg/l; the measured value represents 47 % of the parametric value. Basis: 2022, retrieved on 07/08/2026.

Who supplies the drinking water in Otelfingen?

Wasserversorgung Otelfingen. The values shown here come from the supply zone Gemeindegebiet Otelfingen 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 Otelfingen

One supply zone, water supplier: Wasserversorgung Otelfingen.

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.

Gemeindegebiet Otelfingen

Wasserversorgung Otelfingen

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 31/12/2022. 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

19.3 °dH

Hardness range hard

Key values Gemeindegebiet Otelfingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	18.73 mg/l	40 mg/l	47 %	Mean · Gemeindegebiet Otelfingen
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gemeindegebiet Otelfingen
Sulphate	20.55 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Sodium	7.85 mg/l	200 mg/l	4 %	Mean · Gemeindegebiet Otelfingen

Show all recorded parameters (16 — most recent value per parameter)

Microbiology (3)

Microbiology – Gemeindegebiet Otelfingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	27 KBE/ml	300 1/ml	—	Mean · Gemeindegebiet Otelfingen
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gemeindegebiet Otelfingen
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gemeindegebiet Otelfingen

Chemical parameters (2)

Chemical parameters – Gemeindegebiet Otelfingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	< 0.1 mg/l below limit of quantification	1.5 mg/l	< 7 % *	Mean · Gemeindegebiet Otelfingen
Nitrate	18.73 mg/l	40 mg/l	47 %	Mean · Gemeindegebiet Otelfingen

* 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 (6)

Indicator parameters – Gemeindegebiet Otelfingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	15.7 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Conductivity (25 °C)	590.9 µS/cm	—	—	Mean · Gemeindegebiet Otelfingen
pH	7.41	—	—	Mean · Gemeindegebiet Otelfingen
Sodium	7.85 mg/l	200 mg/l	4 %	Mean · Gemeindegebiet Otelfingen
Sulphate	20.55 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Temperature	15.88 °C	—	—	Mean · Gemeindegebiet Otelfingen

Further parameters (5)

Further parameters – Gemeindegebiet Otelfingen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	105.39 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Hydrogen carbonate	30.56 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Magnesium	19.98 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Potassium	2.18 mg/l	—	—	Mean · Gemeindegebiet Otelfingen
Total hardness	34.5 °fH	—	—	Mean · Gemeindegebiet Otelfingen

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/884/wasserversorgung-otelfingen/529/gemeindegebiet-otelfingen · 2022 · 2022 · retrieved on 07/08/2026

Postcodes in this zone: 8112

Frequently asked questions about drinking water in Otelfingen

How hard is the water in Otelfingen?: Wasserversorgung Otelfingen publishes a total hardness of 34.5 °fH for the supply zone Gemeindegebiet Otelfingen — that corresponds to 19.3 °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: 2022, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Otelfingen?: Wasserversorgung Otelfingen publishes a nitrate value of 18.73 mg/l for the supply zone Gemeindegebiet Otelfingen. The statutory parametric value is 40 mg/l; the measured value represents 47 % of the parametric value. Basis: 2022, retrieved on 07/08/2026.
Who supplies the drinking water in Otelfingen?: Wasserversorgung Otelfingen. The values shown here come from the supply zone Gemeindegebiet Otelfingen 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.