Who supplies the drinking water in Sonthofen?

Stadtwerke Sonthofen. The values shown here come from the supply zone Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten 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 Sonthofen

Q: How much nitrate is in the drinking water in Sonthofen?

Stadtwerke Sonthofen publishes a nitrate value of < 2,7 mg/l for the supply zone Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Stand 09/2025, retrieved on 11/07/2026.

One supply zone, water supplier: Stadtwerke Sonthofen.

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.

Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten

Stadtwerke Sonthofen

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

Key values Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	< 2,7 mg/l below limit of quantification	50 mg/l	< 5 % *	Single value
Escherichia coli (E. coli)	0 MPN/100 ml	0/100 ml	—	Single value
Sulphate	13,6 mg/l	250 mg/l	5 %	Single value
Sodium	3,8 mg/l	200 mg/l	2 %	Single value

* 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.

Show all recorded parameters (30 — most recent value per parameter)

Microbiology (2)

Microbiology – Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 MPN/100 ml	0/100 ml	—	Single value
Intestinal enterococci	0 KBE/100ml	0/100 ml	—	Single value

Chemical parameters (12)

Chemical parameters – Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	< 0,0003 mg/l below limit of quantification	3 µg/l	< 10 % *	Single value
Benzene	< 0,0003 mg/l below limit of quantification	1 µg/l	< 30 % *	Single value
Boron	< 0,1 mg/l below limit of quantification	1 mg/l	< 10 % *	Single value
Bromate	< 0,003 mg/l below limit of quantification	10 µg/l	< 30 % *	Single value
Chromium	0,0001 mg/l	25 µg/l	0.4 %	Single value
Fluoride	< 0,13 mg/l below limit of quantification	1.5 mg/l	< 9 % *	Single value
Glyphosate	Unterhalb der Bestimmungsgrenze, somit nicht nachweisbar µg/l not detectable	—	—	Single value
Mercury	< 0,0002 mg/l below limit of quantification	1 µg/l	< 20 % *	Single value
Nitrate	< 2,7 mg/l below limit of quantification	50 mg/l	< 5 % *	Single value
Selenium	< 0,002 mg/l below limit of quantification	10 µg/l	< 20 % *	Single value
Tetrachloroethene and Trichloroethene (sum)	< 0,001 mg/l below limit of quantification	10 µg/l	< 10 % *	Single value
Uranium	0,0008 mg/l	10 µg/l	8 %	Single value

Indicator parameters (13)

Indicator parameters – Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	< 0,005 mg/l below limit of quantification	0.2 mg/l	< 3 % *	Single value
Ammonium	< 0,04 mg/l below limit of quantification	0.5 mg/l	< 8 % *	Single value
Coliform bacteria	0 MPN/100 ml	0/100 ml	—	Single value
Conductivity (25 °C)	395 µS/cm	2,790 µS/cm	—	Single value
Iron	< 0,02 mg/l below limit of quantification	0.2 mg/l	< 10 % *	Single value
Manganese	< 0,003 mg/l below limit of quantification	50 µg/l	< 6 % *	Single value
Odour	ohne Auffälligkeit --	für den Verbraucher annehmbar	—	Single value
pH	7,84 (bei 8,3°C) --	6,5–9,5	—	Single value
Sodium	3,8 mg/l	200 mg/l	2 %	Single value
Sulphate	13,6 mg/l	250 mg/l	5 %	Single value
Taste	ohne Auffälligkeit --	für den Verbraucher annehmbar	—	Single value
Temperature	8,3° C	—	—	Single value
Turbidity	<0,10 NTU below limit of quantification	1 NTU	—	Single value

Further parameters (3)

Further parameters – Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	60,9 mg/l	—	—	Single value
Magnesium	11,9 mg/l	—	—	Single value
Potassium	0,6 mg/l	—	—	Single value

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://www.stadt-sonthofen.de/media/9349/trinkwasseranalyse_2026.pdf · Stand 09/2025 · 2025 · retrieved on 11/07/2026

Postcodes in this zone: 87527

Frequently asked questions about drinking water in Sonthofen

How much nitrate is in the drinking water in Sonthofen?: Stadtwerke Sonthofen publishes a nitrate value of < 2,7 mg/l for the supply zone Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten. The statutory parametric value is 50 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Stand 09/2025, retrieved on 11/07/2026.
Who supplies the drinking water in Sonthofen?: Stadtwerke Sonthofen. The values shown here come from the supply zone Stadt Sonthofen und die Ortsteile Rieden, Illersiedlung, Binswangen, Staig, Walten, Unterried, Tiefenbach, Imberg, Hofen, Margarethen, Beilenberg, Hinang u. Altstädten 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.