How hard is the water in Halbenrain, Klöch, Tieschen u.a.?

EW Aadorf publishes a total hardness of 40.8 °fH for the supply zone Aadorf und Weiern — that corresponds to 22.8 °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: 2025, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Halbenrain, Klöch, Tieschen u.a.?

EW Aadorf publishes a nitrate value of 17.6 mg/l for the supply zone Aadorf und Weiern. The statutory parametric value is 40 mg/l; the measured value represents 44 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Halbenrain, Klöch, Tieschen u.a.?

EW Aadorf. The values shown here come from the supply zone Aadorf und Weiern 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 Halbenrain, Klöch, Tieschen u.a.

7 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.

Aadorf und Weiern

EW Aadorf

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

Water hardness

22.8 °dH

Hardness range hard

Key values Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17.6 mg/l	40 mg/l	44 %	Mean · Aadorf und Weiern
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aadorf und Weiern
Sulphate	19.4 mg/l	—	—	Mean · Aadorf und Weiern
Sodium	13.7 mg/l	200 mg/l	7 %	Mean · Aadorf und Weiern

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

Microbiology (3)

Microbiology – Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	20 KBE/ml	300 1/ml	—	Mean · Aadorf und Weiern
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aadorf und Weiern
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aadorf und Weiern

Chemical parameters (1)

Chemical parameters – Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17.6 mg/l	40 mg/l	44 %	Mean · Aadorf und Weiern

Metabolites (2)

Metabolites – Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Aadorf und Weiern
Chlorothalonil metabolite R471811	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Aadorf und Weiern

* 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 (5)

Indicator parameters – Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	21.9 mg/l	—	—	Mean · Aadorf und Weiern
pH	7.66	—	—	Mean · Aadorf und Weiern
Sodium	13.7 mg/l	200 mg/l	7 %	Mean · Aadorf und Weiern
Sulphate	19.4 mg/l	—	—	Mean · Aadorf und Weiern
Temperature	10.6 °C	—	—	Mean · Aadorf und Weiern

Further parameters (4)

Further parameters – Aadorf und Weiern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	114.6 mg/l	—	—	Mean · Aadorf und Weiern
Magnesium	29.7 mg/l	—	—	Mean · Aadorf und Weiern
Potassium	3.15 mg/l	—	—	Mean · Aadorf und Weiern
Total hardness	40.8 °fH	—	—	Mean · Aadorf und Weiern

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/871/ew-aadorf/3431/aadorf-und-weiern · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Show 6 more supply zones

Aawangen

EW Aadorf

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

Water hardness

21.7 °dH

Hardness range hard

Key values Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10.7 mg/l	40 mg/l	27 %	Mean · Aawangen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aawangen
Sulphate	12 mg/l	—	—	Mean · Aawangen
Sodium	3.34 mg/l	200 mg/l	2 %	Mean · Aawangen

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

Microbiology (3)

Microbiology – Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	40.7 KBE/ml	300 1/ml	—	Mean · Aawangen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aawangen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aawangen

Chemical parameters (1)

Chemical parameters – Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10.7 mg/l	40 mg/l	27 %	Mean · Aawangen

Metabolites (2)

Metabolites – Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Aawangen
Chlorothalonil metabolite R471811	0.04 µg/l	0.1 µg/l	40 %	Mean · Aawangen

Indicator parameters (5)

Indicator parameters – Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	1.71 mg/l	—	—	Mean · Aawangen
pH	7.44	—	—	Mean · Aawangen
Sodium	3.34 mg/l	200 mg/l	2 %	Mean · Aawangen
Sulphate	12 mg/l	—	—	Mean · Aawangen
Temperature	13.5 °C	—	—	Mean · Aawangen

Further parameters (4)

Further parameters – Aawangen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	103.8 mg/l	—	—	Mean · Aawangen
Magnesium	31.2 mg/l	—	—	Mean · Aawangen
Potassium	0.55 mg/l	—	—	Mean · Aawangen
Total hardness	38.7 °fH	—	—	Mean · Aawangen

Source: https://trinkwasser.ch/de/versorger/871/ew-aadorf/3446/aawangen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Ettenhausen

EW Aadorf

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

Water hardness

21.7 °dH

Hardness range hard

Key values Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14.2 mg/l	40 mg/l	36 %	Mean · Ettenhausen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Ettenhausen
Sulphate	12.6 mg/l	—	—	Mean · Ettenhausen
Sodium	12.9 mg/l	200 mg/l	6 %	Mean · Ettenhausen

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

Microbiology (3)

Microbiology – Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	22 KBE/ml	300 1/ml	—	Mean · Ettenhausen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Ettenhausen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Ettenhausen

Chemical parameters (1)

Chemical parameters – Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14.2 mg/l	40 mg/l	36 %	Mean · Ettenhausen

Metabolites (2)

Metabolites – Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Ettenhausen
Chlorothalonil metabolite R471811	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Ettenhausen

Indicator parameters (5)

Indicator parameters – Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	20.45 mg/l	—	—	Mean · Ettenhausen
pH	7.46	—	—	Mean · Ettenhausen
Sodium	12.9 mg/l	200 mg/l	6 %	Mean · Ettenhausen
Sulphate	12.6 mg/l	—	—	Mean · Ettenhausen
Temperature	8.4 °C	—	—	Mean · Ettenhausen

Further parameters (4)

Further parameters – Ettenhausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	108.6 mg/l	—	—	Mean · Ettenhausen
Magnesium	28.6 mg/l	—	—	Mean · Ettenhausen
Potassium	1.81 mg/l	—	—	Mean · Ettenhausen
Total hardness	38.8 °fH	—	—	Mean · Ettenhausen

Source: https://trinkwasser.ch/de/versorger/871/ew-aadorf/3433/ettenhausen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Frauenfeld

Thurplus

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

Water hardness

16.6 °dH

Hardness range hard

Key values Frauenfeld
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.5 mg/l	40 mg/l	21 %	Mean · Frauenfeld
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Frauenfeld
Sulphate	16.63 mg/l	—	—	Mean · Frauenfeld
Sodium	14.6 mg/l	200 mg/l	7 %	Mean · Frauenfeld

Show all recorded parameters (13 — most recent value per parameter)

Microbiology (3)

Microbiology – Frauenfeld
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	77.75 KBE/ml	300 1/ml	—	Mean · Frauenfeld
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Frauenfeld
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Frauenfeld

Chemical parameters (1)

Chemical parameters – Frauenfeld
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.5 mg/l	40 mg/l	21 %	Mean · Frauenfeld

Indicator parameters (5)

Indicator parameters – Frauenfeld
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	18.5 mg/l	—	—	Mean · Frauenfeld
pH	5.64	—	—	Mean · Frauenfeld
Sodium	14.6 mg/l	200 mg/l	7 %	Mean · Frauenfeld
Sulphate	16.63 mg/l	—	—	Mean · Frauenfeld
Temperature	13.9 °C	—	—	Mean · Frauenfeld

Further parameters (4)

Further parameters – Frauenfeld
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	82.4 mg/l	—	—	Mean · Frauenfeld
Magnesium	22.34 mg/l	—	—	Mean · Frauenfeld
Potassium	2.63 mg/l	—	—	Mean · Frauenfeld
Total hardness	29.7 °fH	—	—	Mean · Frauenfeld

Source: https://trinkwasser.ch/de/versorger/1460/thurplus/3203/frauenfeld · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Guntershausen

EW Aadorf

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

Water hardness

23.4 °dH

Hardness range hard

Key values Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	21.9 mg/l	40 mg/l	55 %	Mean · Guntershausen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Guntershausen
Sulphate	6.38 mg/l	—	—	Mean · Guntershausen
Sodium	7 mg/l	200 mg/l	3 %	Mean · Guntershausen

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

Microbiology (3)

Microbiology – Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	28 KBE/ml	300 1/ml	—	Mean · Guntershausen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Guntershausen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Guntershausen

Chemical parameters (1)

Chemical parameters – Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	21.9 mg/l	40 mg/l	55 %	Mean · Guntershausen

Metabolites (2)

Metabolites – Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Guntershausen
Chlorothalonil metabolite R471811	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Guntershausen

Indicator parameters (5)

Indicator parameters – Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	7 mg/l	—	—	Mean · Guntershausen
pH	7.28	—	—	Mean · Guntershausen
Sodium	7 mg/l	200 mg/l	3 %	Mean · Guntershausen
Sulphate	6.38 mg/l	—	—	Mean · Guntershausen
Temperature	7.9 °C	—	—	Mean · Guntershausen

Further parameters (4)

Further parameters – Guntershausen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	122.3 mg/l	—	—	Mean · Guntershausen
Magnesium	27.3 mg/l	—	—	Mean · Guntershausen
Potassium	0.84 mg/l	—	—	Mean · Guntershausen
Total hardness	41.7 °fH	—	—	Mean · Guntershausen

Source: https://trinkwasser.ch/de/versorger/871/ew-aadorf/3432/guntershausen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Häuslenen

EW Aadorf

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

Water hardness

21.4 °dH

Hardness range hard

Key values Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17.65 mg/l	40 mg/l	44 %	Mean · Häuslenen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Häuslenen
Sulphate	13.6 mg/l	—	—	Mean · Häuslenen
Sodium	8.2 mg/l	200 mg/l	4 %	Mean · Häuslenen

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

Microbiology (3)

Microbiology – Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	18.1 KBE/ml	300 1/ml	—	Mean · Häuslenen
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Häuslenen
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Häuslenen

Chemical parameters (1)

Chemical parameters – Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17.65 mg/l	40 mg/l	44 %	Mean · Häuslenen

Metabolites (2)

Metabolites – Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.04 µg/l	0.1 µg/l	40 %	Mean · Häuslenen
Chlorothalonil metabolite R471811	0.13 µg/l	0.1 µg/l	130 % Mean above the parametric value	Mean · Häuslenen

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 (5)

Indicator parameters – Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	9.72 mg/l	—	—	Mean · Häuslenen
pH	7.5	—	—	Mean · Häuslenen
Sodium	8.2 mg/l	200 mg/l	4 %	Mean · Häuslenen
Sulphate	13.6 mg/l	—	—	Mean · Häuslenen
Temperature	7.9 °C	—	—	Mean · Häuslenen

Further parameters (4)

Further parameters – Häuslenen
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	104 mg/l	—	—	Mean · Häuslenen
Magnesium	29.75 mg/l	—	—	Mean · Häuslenen
Potassium	1.33 mg/l	—	—	Mean · Häuslenen
Total hardness	38.2 °fH	—	—	Mean · Häuslenen

Source: https://trinkwasser.ch/de/versorger/871/ew-aadorf/3445/hauslenen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Wittenwil

EW Aadorf

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

Water hardness

23.8 °dH

Hardness range hard

Key values Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	31.1 mg/l	40 mg/l	78 %	Mean · Wittenwil
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wittenwil
Sulphate	8.4 mg/l	—	—	Mean · Wittenwil
Sodium	6.71 mg/l	200 mg/l	3 %	Mean · Wittenwil

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

Microbiology (3)

Microbiology – Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	62.4 KBE/ml	300 1/ml	—	Mean · Wittenwil
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wittenwil
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Wittenwil

Chemical parameters (1)

Chemical parameters – Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	31.1 mg/l	40 mg/l	78 %	Mean · Wittenwil

Metabolites (2)

Metabolites – Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	< 0.02 µg/l below limit of quantification	0.1 µg/l	< 20 % *	Mean · Wittenwil
Chlorothalonil metabolite R471811	0.02 µg/l	0.1 µg/l	20 %	Mean · Wittenwil

Indicator parameters (5)

Indicator parameters – Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	9.49 mg/l	—	—	Mean · Wittenwil
pH	7.48	—	—	Mean · Wittenwil
Sodium	6.71 mg/l	200 mg/l	3 %	Mean · Wittenwil
Sulphate	8.4 mg/l	—	—	Mean · Wittenwil
Temperature	18.3 °C	—	—	Mean · Wittenwil

Further parameters (4)

Further parameters – Wittenwil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	117.05 mg/l	—	—	Mean · Wittenwil
Magnesium	32.3 mg/l	—	—	Mean · Wittenwil
Potassium	1.53 mg/l	—	—	Mean · Wittenwil
Total hardness	42.5 °fH	—	—	Mean · Wittenwil

Source: https://trinkwasser.ch/de/versorger/871/ew-aadorf/3447/wittenwil · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 8355

Frequently asked questions about drinking water in Halbenrain, Klöch, Tieschen u.a.

How hard is the water in Halbenrain, Klöch, Tieschen u.a.?: EW Aadorf publishes a total hardness of 40.8 °fH for the supply zone Aadorf und Weiern — that corresponds to 22.8 °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: 2025, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Halbenrain, Klöch, Tieschen u.a.?: EW Aadorf publishes a nitrate value of 17.6 mg/l for the supply zone Aadorf und Weiern. The statutory parametric value is 40 mg/l; the measured value represents 44 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Halbenrain, Klöch, Tieschen u.a.?: EW Aadorf. The values shown here come from the supply zone Aadorf und Weiern 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.