How hard is the water in Teufenbach-Katsch?

Richterswil publishes a total hardness of 23.05 °fH for the supply zone 8805 Richterswil — that corresponds to 12.9 °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: 2024, retrieved on 07/08/2026.

How much nitrate is in the drinking water in Teufenbach-Katsch?

Richterswil publishes a nitrate value of 6.52 mg/l for the supply zone 8805 Richterswil. The statutory parametric value is 40 mg/l; the measured value represents 16 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.

Who supplies the drinking water in Teufenbach-Katsch?

Richterswil. The values shown here come from the supply zone 8805 Richterswil 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 Teufenbach-Katsch

One supply zone, water supplier: Richterswil.

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.

8805 Richterswil

Richterswil

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 31/12/2024. 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

12.9 °dH

Hardness range medium

Key values 8805 Richterswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6.52 mg/l	40 mg/l	16 %	Mean · 8805 Richterswil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · 8805 Richterswil
Sulphate	10.5 mg/l	—	—	Mean · 8805 Richterswil
Sodium	5.15 mg/l	200 mg/l	3 %	Mean · 8805 Richterswil

Show all recorded parameters (12 — most recent value per parameter)

Microbiology (3)

Microbiology – 8805 Richterswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	12.45 KBE/ml	300 1/ml	—	Mean · 8805 Richterswil
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · 8805 Richterswil
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · 8805 Richterswil

Chemical parameters (1)

Chemical parameters – 8805 Richterswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6.52 mg/l	40 mg/l	16 %	Mean · 8805 Richterswil

Indicator parameters (4)

Indicator parameters – 8805 Richterswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	6.18 mg/l	—	—	Mean · 8805 Richterswil
Sodium	5.15 mg/l	200 mg/l	3 %	Mean · 8805 Richterswil
Sulphate	10.5 mg/l	—	—	Mean · 8805 Richterswil
Temperature	12.68 °C	—	—	Mean · 8805 Richterswil

Further parameters (4)

Further parameters – 8805 Richterswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	75.15 mg/l	—	—	Mean · 8805 Richterswil
Magnesium	13.4 mg/l	—	—	Mean · 8805 Richterswil
Potassium	0.9 mg/l	—	—	Mean · 8805 Richterswil
Total hardness	23.05 °fH	—	—	Mean · 8805 Richterswil

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/815/richterswil/2432/8805-richterswil · 2024 · 2024 · retrieved on 07/08/2026

Postcodes in this zone: 8833

Frequently asked questions about drinking water in Teufenbach-Katsch

How hard is the water in Teufenbach-Katsch?: Richterswil publishes a total hardness of 23.05 °fH for the supply zone 8805 Richterswil — that corresponds to 12.9 °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: 2024, retrieved on 07/08/2026.
How much nitrate is in the drinking water in Teufenbach-Katsch?: Richterswil publishes a nitrate value of 6.52 mg/l for the supply zone 8805 Richterswil. The statutory parametric value is 40 mg/l; the measured value represents 16 % of the parametric value. Basis: 2024, retrieved on 07/08/2026.
Who supplies the drinking water in Teufenbach-Katsch?: Richterswil. The values shown here come from the supply zone 8805 Richterswil 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.

No data yet

For postcode 8841 there is no verified assignment yet.