How hard is the water in Hinterforst?

Wasserwerk Altstätten publishes a total hardness of 26.6 °fH for the supply zone Altstätten — that corresponds to 14.9 °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 Hinterforst?

Wasserwerk Altstätten publishes a nitrate value of 5.5 mg/l for the supply zone Altstätten. The statutory parametric value is 40 mg/l; the measured value represents 14 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Hinterforst?

Wasserwerk Altstätten. The values shown here come from the supply zone Altstätten 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 Hinterforst

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.

Altstätten

Wasserwerk Altstätten

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

Water hardness

14.9 °dH

Hardness range hard

Key values Altstätten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5.5 mg/l	40 mg/l	14 %	Mean · Altstätten
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Altstätten
Sulphate	12.7 mg/l	—	—	Mean · Altstätten
Sodium	6.8 mg/l	200 mg/l	3 %	Mean · Altstätten

Show all recorded parameters (17 — most recent value per parameter)

Microbiology (3)

Microbiology – Altstätten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	9.3 KBE/ml	300 1/ml	—	Mean · Altstätten
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Altstätten
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Altstätten

Chemical parameters (2)

Chemical parameters – Altstätten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	0.2 mg/l	1.5 mg/l	13 %	Mean · Altstätten
Nitrate	5.5 mg/l	40 mg/l	14 %	Mean · Altstätten

Indicator parameters (7)

Indicator parameters – Altstätten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8.1 mg/l	—	—	Mean · Altstätten
Conductivity (25 °C)	545.8 µS/cm	—	—	Mean · Altstätten
pH	7.7	—	—	Mean · Altstätten
Sodium	6.8 mg/l	200 mg/l	3 %	Mean · Altstätten
Sulphate	12.7 mg/l	—	—	Mean · Altstätten
Temperature	12.1 °C	—	—	Mean · Altstätten
Turbidity	0.1 TE/F	—	—	Mean · Altstätten

Further parameters (5)

Further parameters – Altstätten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	76.2 mg/l	—	—	Mean · Altstätten
Hydrogen carbonate	348.3 mg/l	—	—	Mean · Altstätten
Magnesium	18.4 mg/l	—	—	Mean · Altstätten
Potassium	1.5 mg/l	—	—	Mean · Altstätten
Total hardness	26.6 °fH	—	—	Mean · Altstätten

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/901/wasserwerk-altstatten/3680/altstatten · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 9452

Show 2 more supply zones

Eichberg

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

Water hardness

12.8 °dH

Hardness range medium

Key values Eichberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4.6 mg/l	40 mg/l	12 %	Mean · Eichberg
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Eichberg
Sulphate	6.9 mg/l	—	—	Mean · Eichberg

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

Microbiology (3)

Microbiology – Eichberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	101.1 KBE/ml	300 1/ml	—	Mean · Eichberg
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Eichberg
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Eichberg

Chemical parameters (1)

Chemical parameters – Eichberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	4.6 mg/l	40 mg/l	12 %	Mean · Eichberg

Indicator parameters (6)

Indicator parameters – Eichberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	1.6 mg/l	—	—	Mean · Eichberg
Conductivity (25 °C)	458.7 µS/cm	—	—	Mean · Eichberg
pH	7.5	—	—	Mean · Eichberg
Sulphate	6.9 mg/l	—	—	Mean · Eichberg
Temperature	14 °C	—	—	Mean · Eichberg
Turbidity	0.3 TE/F	—	—	Mean · Eichberg

Further parameters (3)

Further parameters – Eichberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	75.1 mg/l	—	—	Mean · Eichberg
Magnesium	10 mg/l	—	—	Mean · Eichberg
Total hardness	22.9 °fH	—	—	Mean · Eichberg

Source: https://trinkwasser.ch/de/versorger/814/eichberg/2810/eichberg · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 9452

Lienz / Plona

Wasserwerk Altstätten

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

Water hardness

9.9 °dH

Hardness range medium

Key values Lienz / Plona
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5.1 mg/l	40 mg/l	13 %	Mean · Lienz / Plona
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Lienz / Plona
Sulphate	3.6 mg/l	—	—	Mean · Lienz / Plona
Sodium	0.6 mg/l	200 mg/l	0.3 %	Mean · Lienz / Plona

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

Microbiology (3)

Microbiology – Lienz / Plona
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	6.2 KBE/ml	300 1/ml	—	Mean · Lienz / Plona
Escherichia coli (E. coli)	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Lienz / Plona
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Maximum · Median 0 · Lienz / Plona

Chemical parameters (1)

Chemical parameters – Lienz / Plona
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5.1 mg/l	40 mg/l	13 %	Mean · Lienz / Plona

Indicator parameters (7)

Indicator parameters – Lienz / Plona
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	0.8 mg/l	—	—	Mean · Lienz / Plona
Conductivity (25 °C)	338.2 µS/cm	—	—	Mean · Lienz / Plona
pH	7.9	—	—	Mean · Lienz / Plona
Sodium	0.6 mg/l	200 mg/l	0.3 %	Mean · Lienz / Plona
Sulphate	3.6 mg/l	—	—	Mean · Lienz / Plona
Temperature	12.9 °C	—	—	Mean · Lienz / Plona
Turbidity	0.1 TE/F	—	—	Mean · Lienz / Plona

Further parameters (4)

Further parameters – Lienz / Plona
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	67.4 mg/l	—	—	Mean · Lienz / Plona
Magnesium	1.9 mg/l	—	—	Mean · Lienz / Plona
Potassium	0.5 mg/l	—	—	Mean · Lienz / Plona
Total hardness	17.6 °fH	—	—	Mean · Lienz / Plona

Source: https://trinkwasser.ch/de/versorger/901/wasserwerk-altstatten/3679/lienz-plona · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 9452

Frequently asked questions about drinking water in Hinterforst

How hard is the water in Hinterforst?: Wasserwerk Altstätten publishes a total hardness of 26.6 °fH for the supply zone Altstätten — that corresponds to 14.9 °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 Hinterforst?: Wasserwerk Altstätten publishes a nitrate value of 5.5 mg/l for the supply zone Altstätten. The statutory parametric value is 40 mg/l; the measured value represents 14 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Hinterforst?: Wasserwerk Altstätten. The values shown here come from the supply zone Altstätten 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.