How hard is the water in Karres?

Wasserversorgung Seedorf publishes a total hardness of 13.3 °fH for the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR — that corresponds to 7.4 °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: 2025, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Karres?

Wasserversorgung Seedorf publishes a nitrate value of 1.2 mg/l for the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR. The statutory parametric value is 40 mg/l; the measured value represents 3 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Karres?

Wasserversorgung Seedorf. The values shown here come from the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR 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 Karres

2 supply zones — values can differ depending on the district. Below is the zone with the most documented parameters, the others collapsed underneath. To determine the exact match, look up the postcode.

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.

Gemeinde Seedorf, Ortsteil 6462 Seedorf UR

Wasserversorgung Seedorf

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness

7.4 °dH

Hardness range soft

Key values Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	1.2 mg/l	40 mg/l	3 %	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR

Show all recorded parameters (7 — most recent value per parameter)

Microbiology (3)

Microbiology – Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	8.06 KBE/ml	300 1/ml	—	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR

Chemical parameters (1)

Chemical parameters – Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	1.2 mg/l	40 mg/l	3 %	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR

Further parameters (3)

Further parameters – Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	45 mg/l	—	—	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Magnesium	5.1 mg/l	—	—	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR
Total hardness	13.3 °fH	—	—	Mean · Gemeinde Seedorf, Ortsteil 6462 Seedorf UR

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/798/wasserversorgung-seedorf/3493/gemeinde-seedorf-ortsteil-6462-seedorf-ur · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6462

Show 1 more supply zone

Gemeinde Seedorf, Ortsteil 6466 Bauen

Wasserversorgung Seedorf

Assigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.

Water hardness

8.3 °dH

Hardness range soft

Key values Gemeinde Seedorf, Ortsteil 6466 Bauen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	2.8 mg/l	40 mg/l	7 %	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6466 Bauen

Show all recorded parameters (7 — most recent value per parameter)

Microbiology (3)

Microbiology – Gemeinde Seedorf, Ortsteil 6466 Bauen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	46.28 KBE/ml	300 1/ml	—	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6466 Bauen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Gemeinde Seedorf, Ortsteil 6466 Bauen

Chemical parameters (1)

Chemical parameters – Gemeinde Seedorf, Ortsteil 6466 Bauen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	2.8 mg/l	40 mg/l	7 %	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen

Further parameters (3)

Further parameters – Gemeinde Seedorf, Ortsteil 6466 Bauen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	49 mg/l	—	—	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen
Magnesium	6.9 mg/l	—	—	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen
Total hardness	14.9 °fH	—	—	Mean · Gemeinde Seedorf, Ortsteil 6466 Bauen

Source: https://trinkwasser.ch/de/versorger/798/wasserversorgung-seedorf/3491/gemeinde-seedorf-ortsteil-6466-bauen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6462

Frequently asked questions about drinking water in Karres

How hard is the water in Karres?: Wasserversorgung Seedorf publishes a total hardness of 13.3 °fH for the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR — that corresponds to 7.4 °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: 2025, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Karres?: Wasserversorgung Seedorf publishes a nitrate value of 1.2 mg/l for the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR. The statutory parametric value is 40 mg/l; the measured value represents 3 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Karres?: Wasserversorgung Seedorf. The values shown here come from the supply zone Gemeinde Seedorf, Ortsteil 6462 Seedorf UR 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.