How hard is the water in Marbach SG?

Wasserversorgung Marbach SG publishes a total hardness of 32.3 °fH for the supply zone Marbach — that corresponds to 18.1 °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 Marbach SG?

Wasserversorgung Marbach SG publishes a nitrate value of 14 mg/l for the supply zone Marbach. The statutory parametric value is 40 mg/l; the measured value represents 35 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Marbach SG?

Wasserversorgung Marbach SG. The values shown here come from the supply zone Marbach 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 Marbach SG

One supply zone, water supplier: Wasserversorgung Marbach SG.

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.

Marbach

Wasserversorgung Marbach SG

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

Water hardness

18.1 °dH

Hardness range hard

Key values Marbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14 mg/l	40 mg/l	35 %	Mean · Marbach
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Marbach
Sulphate	12 mg/l	—	—	Mean · Marbach

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

Microbiology (3)

Microbiology – Marbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	10.6 KBE/ml	300 1/ml	—	Mean · Marbach
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Marbach
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Marbach

Chemical parameters (1)

Chemical parameters – Marbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14 mg/l	40 mg/l	35 %	Mean · Marbach

Indicator parameters (5)

Indicator parameters – Marbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	6 mg/l	—	—	Mean · Marbach
Conductivity (25 °C)	637 µS/cm	—	—	Mean · Marbach
pH	7.1	—	—	Mean · Marbach
Sulphate	12 mg/l	—	—	Mean · Marbach
Temperature	13.95 °C	—	—	Mean · Marbach

Further parameters (4)

Further parameters – Marbach
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	114 mg/l	—	—	Mean · Marbach
Dissolved organic carbon (DOC)	0.42 mg/l	—	—	Mean · Marbach
Magnesium	16 mg/l	—	—	Mean · Marbach
Total hardness	32.3 °fH	—	—	Mean · Marbach

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/1572/wasserversorgung-marbach-sg/3635/marbach · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 9437

Frequently asked questions about drinking water in Marbach SG

How hard is the water in Marbach SG?: Wasserversorgung Marbach SG publishes a total hardness of 32.3 °fH for the supply zone Marbach — that corresponds to 18.1 °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 Marbach SG?: Wasserversorgung Marbach SG publishes a nitrate value of 14 mg/l for the supply zone Marbach. The statutory parametric value is 40 mg/l; the measured value represents 35 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Marbach SG?: Wasserversorgung Marbach SG. The values shown here come from the supply zone Marbach 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.