How hard is the water in Attikon?

Wasserversorgung Gemeinde Wiesendangen publishes a total hardness of 37.25 °fH for the supply zone Bertschikon — that corresponds to 20.9 °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: 2025, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Attikon?

Wasserversorgung Gemeinde Wiesendangen publishes a nitrate value of 27 mg/l for the supply zone Bertschikon. The statutory parametric value is 40 mg/l; the measured value represents 68 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Attikon?

Wasserversorgung Gemeinde Wiesendangen. The values shown here come from the supply zone Bertschikon 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 Attikon

3 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.

Bertschikon

Wasserversorgung Gemeinde Wiesendangen

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

Water hardness

20.9 °dH

Hardness range hard

Key values Bertschikon
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	27 mg/l	40 mg/l	68 %	Mean · Bertschikon
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Bertschikon
Sulphate	10.7 mg/l	—	—	Mean · Bertschikon
Sodium	8 mg/l	200 mg/l	4 %	Mean · Bertschikon

Show all recorded parameters (18 — most recent value per parameter)

Microbiology (3)

Microbiology – Bertschikon
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	1.5 KBE/ml	300 1/ml	—	Mean · Bertschikon
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Bertschikon
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Bertschikon

Chemical parameters (2)

Chemical parameters – Bertschikon
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 · Bertschikon
Nitrate	27 mg/l	40 mg/l	68 %	Mean · Bertschikon

* 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.

Metabolites (2)

Metabolites – Bertschikon
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.012 µg/l	0.1 µg/l	12 %	Mean · Bertschikon
Chlorothalonil metabolite R471811	0.064 µg/l	0.1 µg/l	64 %	Mean · Bertschikon

Indicator parameters (6)

Indicator parameters – Bertschikon
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	16.4 mg/l	—	—	Mean · Bertschikon
Conductivity (25 °C)	706 µS/cm	—	—	Mean · Bertschikon
pH	7.3	—	—	Mean · Bertschikon
Sodium	8 mg/l	200 mg/l	4 %	Mean · Bertschikon
Sulphate	10.7 mg/l	—	—	Mean · Bertschikon
Temperature	12.75 °C	—	—	Mean · Bertschikon

Further parameters (5)

Further parameters – Bertschikon
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	105.45 mg/l	—	—	Mean · Bertschikon
Magnesium	26.6 mg/l	—	—	Mean · Bertschikon
Potassium	1.65 mg/l	—	—	Mean · Bertschikon
Spectral absorption coefficient 254 nm (SAC 254)	1.5 1/m	—	—	Mean · Bertschikon
Total hardness	37.25 °fH	—	—	Mean · Bertschikon

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/1486/wasserversorgung-gemeinde-wiesendangen/3031/bertschikon · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8544

Show 2 more supply zones

Gundetswil

Wasserversorgung Gemeinde Wiesendangen

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

Water hardness

15.4 °dH

Hardness range hard

Key values Gundetswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	11.7 mg/l	40 mg/l	29 %	Mean · Gundetswil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gundetswil
Sulphate	11.9 mg/l	—	—	Mean · Gundetswil
Sodium	15.55 mg/l	200 mg/l	8 %	Mean · Gundetswil

Show all recorded parameters (18 — most recent value per parameter)

Microbiology (3)

Microbiology – Gundetswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	3.5 KBE/ml	300 1/ml	—	Mean · Gundetswil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gundetswil
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Gundetswil

Chemical parameters (2)

Chemical parameters – Gundetswil
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 · Gundetswil
Nitrate	11.7 mg/l	40 mg/l	29 %	Mean · Gundetswil

Metabolites (2)

Metabolites – Gundetswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.01 µg/l below limit of quantification	0.1 µg/l	< 10 % *	Mean · Gundetswil
Chlorothalonil metabolite R471811	0.032 µg/l	0.1 µg/l	32 %	Mean · Gundetswil

Indicator parameters (6)

Indicator parameters – Gundetswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	24.2 mg/l	—	—	Mean · Gundetswil
Conductivity (25 °C)	577.5 µS/cm	—	—	Mean · Gundetswil
pH	7.45	—	—	Mean · Gundetswil
Sodium	15.55 mg/l	200 mg/l	8 %	Mean · Gundetswil
Sulphate	11.9 mg/l	—	—	Mean · Gundetswil
Temperature	13.1 °C	—	—	Mean · Gundetswil

Further parameters (5)

Further parameters – Gundetswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	83.65 mg/l	—	—	Mean · Gundetswil
Magnesium	15.5 mg/l	—	—	Mean · Gundetswil
Potassium	3.2 mg/l	—	—	Mean · Gundetswil
Spectral absorption coefficient 254 nm (SAC 254)	2.55 1/m	—	—	Mean · Gundetswil
Total hardness	27.45 °fH	—	—	Mean · Gundetswil

Source: https://trinkwasser.ch/de/versorger/1486/wasserversorgung-gemeinde-wiesendangen/3032/gundetswil · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8544

Wiesendangen

Wasserversorgung Gemeinde Wiesendangen

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

Water hardness

17.5 °dH

Hardness range hard

Key values Wiesendangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10.83 mg/l	40 mg/l	27 %	Mean · Wiesendangen
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wiesendangen
Sulphate	8.43 mg/l	—	—	Mean · Wiesendangen
Sodium	7.9 mg/l	200 mg/l	4 %	Mean · Wiesendangen

Show all recorded parameters (18 — most recent value per parameter)

Microbiology (3)

Microbiology – Wiesendangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	2.5 KBE/ml	300 1/ml	—	Mean · Wiesendangen
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wiesendangen
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Wiesendangen

Chemical parameters (2)

Chemical parameters – Wiesendangen
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 · Wiesendangen
Nitrate	10.83 mg/l	40 mg/l	27 %	Mean · Wiesendangen

Metabolites (2)

Metabolites – Wiesendangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.054 µg/l	0.1 µg/l	54 %	Mean · Wiesendangen
Chlorothalonil metabolite R471811	0.077 µg/l	0.1 µg/l	77 %	Mean · Wiesendangen

Indicator parameters (6)

Indicator parameters – Wiesendangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11.3 mg/l	—	—	Mean · Wiesendangen
Conductivity (25 °C)	598 µS/cm	—	—	Mean · Wiesendangen
pH	7.33	—	—	Mean · Wiesendangen
Sodium	7.9 mg/l	200 mg/l	4 %	Mean · Wiesendangen
Sulphate	8.43 mg/l	—	—	Mean · Wiesendangen
Temperature	14.43 °C	—	—	Mean · Wiesendangen

Further parameters (5)

Further parameters – Wiesendangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	88.9 mg/l	—	—	Mean · Wiesendangen
Magnesium	22.08 mg/l	—	—	Mean · Wiesendangen
Potassium	1.4 mg/l	—	—	Mean · Wiesendangen
Spectral absorption coefficient 254 nm (SAC 254)	0.95 1/m	—	—	Mean · Wiesendangen
Total hardness	31.28 °fH	—	—	Mean · Wiesendangen

Source: https://trinkwasser.ch/de/versorger/1486/wasserversorgung-gemeinde-wiesendangen/3030/wiesendangen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8544

Frequently asked questions about drinking water in Attikon

How hard is the water in Attikon?: Wasserversorgung Gemeinde Wiesendangen publishes a total hardness of 37.25 °fH for the supply zone Bertschikon — that corresponds to 20.9 °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: 2025, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Attikon?: Wasserversorgung Gemeinde Wiesendangen publishes a nitrate value of 27 mg/l for the supply zone Bertschikon. The statutory parametric value is 40 mg/l; the measured value represents 68 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Attikon?: Wasserversorgung Gemeinde Wiesendangen. The values shown here come from the supply zone Bertschikon 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.