How hard is the water in Unterterzen?

Wasserversorgung der Ortsgemeinde Quarten publishes a total hardness of 6.95 °fH for the supply zone Quarten und Unterterzen — that corresponds to 3.9 °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: 2021, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Unterterzen?

Wasserversorgung der Ortsgemeinde Quarten publishes a nitrate value of 2.5 mg/l for the supply zone Quarten und Unterterzen. The statutory parametric value is 40 mg/l; the measured value represents 6 % of the parametric value. Basis: 2021, retrieved on 07/08/2026.

Who supplies the drinking water in Unterterzen?

Wasserversorgung der Ortsgemeinde Quarten. The values shown here come from the supply zone Quarten und Unterterzen 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 Unterterzen

One supply zone, water supplier: Wasserversorgung der Ortsgemeinde Quarten.

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.

Quarten und Unterterzen

Wasserversorgung der Ortsgemeinde Quarten

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

3.9 °dH

Hardness range soft

Key values Quarten und Unterterzen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	2.5 mg/l	40 mg/l	6 %	Mean · Quarten und Unterterzen · Source [1]
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Quarten und Unterterzen · Source [1]
Sulphate	9.5 mg/l	—	—	Mean · Quarten und Unterterzen · Source [1]
Sodium	1.2 mg/l	200 mg/l	0.6 %	Mean · Quarten und Unterterzen · Source [1]

Show all recorded parameters (15 — most recent value per parameter)

Microbiology (3)

Microbiology – Quarten und Unterterzen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	3 KBE/ml	300 1/ml	—	Mean · Quarten und Unterterzen · Source [1]
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Quarten und Unterterzen · Source [1]
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Quarten und Unterterzen · Source [1]

Chemical parameters (1)

Chemical parameters – Quarten und Unterterzen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	2.5 mg/l	40 mg/l	6 %	Mean · Quarten und Unterterzen · Source [1]

Indicator parameters (7)

Indicator parameters – Quarten und Unterterzen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	1.5 mg/l	—	—	Mean · Quarten und Unterterzen · Source [2]
Conductivity (25 °C)	131.5 µS/cm	—	—	Mean · Quarten und Unterterzen · Source [1]
pH	8.12	—	—	Mean · Quarten und Unterterzen · Source [1]
Sodium	1.2 mg/l	200 mg/l	0.6 %	Mean · Quarten und Unterterzen · Source [1]
Sulphate	9.5 mg/l	—	—	Mean · Quarten und Unterterzen · Source [1]
Temperature	9 °C	—	—	Mean · Quarten und Unterterzen · Source [1]
Turbidity	0.1 TE/F	—	—	Mean · Quarten und Unterterzen · Source [1]

Further parameters (4)

Further parameters – Quarten und Unterterzen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	22 mg/l	—	—	Mean · Quarten und Unterterzen · Source [1]
Magnesium	4 mg/l	—	—	Mean · Quarten und Unterterzen · Source [1]
Potassium	0.23 mg/l	—	—	Mean · Quarten und Unterterzen · Source [1]
Total hardness	6.95 °fH	—	—	Mean · Quarten und Unterterzen · Source [1]

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.

Sources: [1] https://trinkwasser.ch/de/versorger/1167/wasserversorgung-der-ortsgemeinde-quarten/50/quarten-und-unterterzen · 2021 · 2021 · retrieved on 07/08/2026 [2] https://trinkwasser.ch/de/versorger/1167/wasserversorgung-der-ortsgemeinde-quarten/1857/quarten-und-unterterzen · 2023 · 2023 · retrieved on 07/08/2026

Postcodes in this zone: 8882

Frequently asked questions about drinking water in Unterterzen

How hard is the water in Unterterzen?: Wasserversorgung der Ortsgemeinde Quarten publishes a total hardness of 6.95 °fH for the supply zone Quarten und Unterterzen — that corresponds to 3.9 °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: 2021, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Unterterzen?: Wasserversorgung der Ortsgemeinde Quarten publishes a nitrate value of 2.5 mg/l for the supply zone Quarten und Unterterzen. The statutory parametric value is 40 mg/l; the measured value represents 6 % of the parametric value. Basis: 2021, retrieved on 07/08/2026.
Who supplies the drinking water in Unterterzen?: Wasserversorgung der Ortsgemeinde Quarten. The values shown here come from the supply zone Quarten und Unterterzen 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.