How hard is the water in Cham?

WWZ AG publishes a total hardness of 26.1 °fH for the supply zone Cham Hagendorn und Hünenberg — that corresponds to 14.6 °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 Cham?

WWZ AG publishes a nitrate value of 14.89 mg/l for the supply zone Cham Hagendorn und Hünenberg. The statutory parametric value is 40 mg/l; the measured value represents 37 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.

Who supplies the drinking water in Cham?

WWZ AG. The values shown here come from the supply zone Cham Hagendorn und Hünenberg 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 Cham

There are 2 places with this name — listed below by area. 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.

Cham (6330)

Cham Hagendorn und Hünenberg

WWZ AG

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

Water hardness

14.6 °dH

Hardness range hard

Key values Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14.89 mg/l	40 mg/l	37 %	Mean · Cham Hagendorn und Hünenberg
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Cham Hagendorn und Hünenberg
Sulphate	18.38 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Sodium	5.95 mg/l	200 mg/l	3 %	Mean · Cham Hagendorn und Hünenberg

Show all recorded parameters (21 — most recent value per parameter)

Microbiology (3)

Microbiology – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	17 KBE/ml	300 1/ml	—	Mean · Cham Hagendorn und Hünenberg
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Cham Hagendorn und Hünenberg
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Cham Hagendorn und Hünenberg

Chemical parameters (1)

Chemical parameters – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14.89 mg/l	40 mg/l	37 %	Mean · Cham Hagendorn und Hünenberg

PFAS (3)

PFAS – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Perfluorohexane sulfonic acid (PFHxS)	< 0.002 µg/l below limit of quantification	0.3 µg/l	< 0.7 % *	Mean · Cham Hagendorn und Hünenberg
Perfluorooctanesulfonic acid (PFOS)	< 0.001 µg/l below limit of quantification	0.3 µg/l	< 0.3 % *	Mean · Cham Hagendorn und Hünenberg
Perfluorooctanoic acid (PFOA)	< 0.001 µg/l below limit of quantification	0.5 µg/l	< 0.2 % *	Mean · Cham Hagendorn und Hünenberg

* 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.

Metabolites (2)

Metabolites – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.02 µg/l	0.1 µg/l	20 %	Mean · Cham Hagendorn und Hünenberg
Chlorothalonil metabolite R471811	0.04 µg/l	0.1 µg/l	40 %	Mean · Cham Hagendorn und Hünenberg

Indicator parameters (8)

Indicator parameters – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	7.15 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Conductivity (25 °C)	462.83 µS/cm	—	—	Mean · Cham Hagendorn und Hünenberg
Iron	0.01 mg/l	0.2 mg/l	5 %	Mean · Cham Hagendorn und Hünenberg
Manganese	0 mg/l	50 µg/l	0 %	Mean · Cham Hagendorn und Hünenberg
pH	7.39	—	—	Mean · Cham Hagendorn und Hünenberg
Sodium	5.95 mg/l	200 mg/l	3 %	Mean · Cham Hagendorn und Hünenberg
Sulphate	18.38 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Turbidity	0.14 TE/F	—	—	Mean · Cham Hagendorn und Hünenberg

Further parameters (4)

Further parameters – Cham Hagendorn und Hünenberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	90.8 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Magnesium	8.43 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Potassium	2.66 mg/l	—	—	Mean · Cham Hagendorn und Hünenberg
Total hardness	26.1 °fH	—	—	Mean · Cham Hagendorn und Hünenberg

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/635/wwz-ag/3230/cham-hagendorn-und-hunenberg · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6330

Show 4 more supply zones

Hochdorf

WWZ AG

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

Water hardness

21.8 °dH

Hardness range hard

Key values Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	27.9 mg/l	40 mg/l	70 %	Mean · Hochdorf
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Hochdorf
Sulphate	15.2 mg/l	—	—	Mean · Hochdorf
Sodium	10 mg/l	200 mg/l	5 %	Mean · Hochdorf

Show all recorded parameters (22 — most recent value per parameter)

Microbiology (3)

Microbiology – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	4 KBE/ml	300 1/ml	—	Mean · Hochdorf
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Hochdorf
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Hochdorf

Chemical parameters (1)

Chemical parameters – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	27.9 mg/l	40 mg/l	70 %	Mean · Hochdorf

PFAS (3)

PFAS – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Perfluorohexane sulfonic acid (PFHxS)	< 0.001 µg/l below limit of quantification	0.3 µg/l	< 0.3 % *	Mean · Hochdorf
Perfluorooctanesulfonic acid (PFOS)	< 0.001 µg/l below limit of quantification	0.3 µg/l	< 0.3 % *	Mean · Hochdorf
Perfluorooctanoic acid (PFOA)	< 0.001 µg/l below limit of quantification	0.5 µg/l	< 0.2 % *	Mean · Hochdorf

Metabolites (2)

Metabolites – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chlorothalonil metabolite R417888	0.03 µg/l	0.1 µg/l	30 %	Mean · Hochdorf
Chlorothalonil metabolite R471811	0.34 µg/l	0.1 µg/l	340 % Mean above the parametric value	Mean · Hochdorf

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 (8)

Indicator parameters – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	17.7 mg/l	—	—	Mean · Hochdorf
Conductivity (25 °C)	750 µS/cm	—	—	Mean · Hochdorf
Oxidisability	1 mg KMnO4/l	—	—	Mean · Hochdorf
pH	7.17	—	—	Mean · Hochdorf
Sodium	10 mg/l	200 mg/l	5 %	Mean · Hochdorf
Sulphate	15.2 mg/l	—	—	Mean · Hochdorf
Temperature	12.5 °C	—	—	Mean · Hochdorf
Turbidity	0.22 TE/F	—	—	Mean · Hochdorf

Further parameters (5)

Further parameters – Hochdorf
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	134.5 mg/l	—	—	Mean · Hochdorf
Hydrogen carbonate	428 mg/l	—	—	Mean · Hochdorf
Magnesium	13.1 mg/l	—	—	Mean · Hochdorf
Potassium	1.8 mg/l	—	—	Mean · Hochdorf
Total hardness	38.9 °fH	—	—	Mean · Hochdorf

Source: https://trinkwasser.ch/de/versorger/635/wwz-ag/3228/hochdorf · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6330

Römerswil

WWZ AG

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

Water hardness

22.5 °dH

Hardness range hard

Key values Römerswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	32.5 mg/l	40 mg/l	81 %	Mean · Römerswil
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Römerswil
Sulphate	18.75 mg/l	—	—	Mean · Römerswil

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

Microbiology (3)

Microbiology – Römerswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	1.25 KBE/ml	300 1/ml	—	Mean · Römerswil
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Römerswil
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Römerswil

Chemical parameters (1)

Chemical parameters – Römerswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	32.5 mg/l	40 mg/l	81 %	Mean · Römerswil

Indicator parameters (4)

Indicator parameters – Römerswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	19.75 mg/l	—	—	Mean · Römerswil
Sulphate	18.75 mg/l	—	—	Mean · Römerswil
Temperature	11.8 °C	—	—	Mean · Römerswil
Turbidity	0.12 TE/F	—	—	Mean · Römerswil

Further parameters (4)

Further parameters – Römerswil
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	135.5 mg/l	—	—	Mean · Römerswil
Hydrogen carbonate	433 mg/l	—	—	Mean · Römerswil
Magnesium	15.5 mg/l	—	—	Mean · Römerswil
Total hardness	40.15 °fH	—	—	Mean · Römerswil

Source: https://trinkwasser.ch/de/versorger/635/wwz-ag/3260/romerswil · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6330

Walterswil Sihlbrugg

WWZ AG

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

Water hardness

16.2 °dH

Hardness range hard

Key values Walterswil Sihlbrugg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	13.37 mg/l	40 mg/l	33 %	Mean · Walterswil Sihlbrugg
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Walterswil Sihlbrugg
Sulphate	7.3 mg/l	—	—	Mean · Walterswil Sihlbrugg

Show all recorded parameters (14 — most recent value per parameter)

Microbiology (3)

Microbiology – Walterswil Sihlbrugg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	7.6 KBE/ml	300 1/ml	—	Mean · Walterswil Sihlbrugg
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Walterswil Sihlbrugg
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Walterswil Sihlbrugg

Chemical parameters (2)

Chemical parameters – Walterswil Sihlbrugg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Fluoride	0.06 mg/l	1.5 mg/l	4 %	Mean · Walterswil Sihlbrugg
Nitrate	13.37 mg/l	40 mg/l	33 %	Mean · Walterswil Sihlbrugg

Indicator parameters (5)

Indicator parameters – Walterswil Sihlbrugg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	4.06 mg/l	—	—	Mean · Walterswil Sihlbrugg
Conductivity (25 °C)	501 µS/cm	—	—	Mean · Walterswil Sihlbrugg
pH	7.57	—	—	Mean · Walterswil Sihlbrugg
Sulphate	7.3 mg/l	—	—	Mean · Walterswil Sihlbrugg
Temperature	11.3 °C	—	—	Mean · Walterswil Sihlbrugg

Further parameters (4)

Further parameters – Walterswil Sihlbrugg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	86.8 mg/l	—	—	Mean · Walterswil Sihlbrugg
Dissolved organic carbon (DOC)	0.26 mg/l	—	—	Mean · Walterswil Sihlbrugg
Magnesium	17.78 mg/l	—	—	Mean · Walterswil Sihlbrugg
Total hardness	29 °fH	—	—	Mean · Walterswil Sihlbrugg

Source: https://trinkwasser.ch/de/versorger/635/wwz-ag/3229/walterswil-sihlbrugg · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6330

Zug

WWZ AG

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

Water hardness

13.9 °dH

Hardness range medium

Key values Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.3 mg/l	40 mg/l	21 %	Mean · Zug
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Zug
Sulphate	8.5 mg/l	—	—	Mean · Zug
Sodium	10.1 mg/l	200 mg/l	5 %	Mean · Zug

Show all recorded parameters (18 — most recent value per parameter)

Microbiology (3)

Microbiology – Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	11.6 KBE/ml	300 1/ml	—	Mean · Zug
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Zug
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Zug

Chemical parameters (1)

Chemical parameters – Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.3 mg/l	40 mg/l	21 %	Mean · Zug

PFAS (3)

PFAS – Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Perfluorohexane sulfonic acid (PFHxS)	< 0.001 µg/l below limit of quantification	0.3 µg/l	< 0.3 % *	Mean · Zug
Perfluorooctanesulfonic acid (PFOS)	< 0.001 µg/l below limit of quantification	0.3 µg/l	< 0.3 % *	Mean · Zug
Perfluorooctanoic acid (PFOA)	< 0.001 µg/l below limit of quantification	0.5 µg/l	< 0.2 % *	Mean · Zug

Indicator parameters (7)

Indicator parameters – Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	12.13 mg/l	—	—	Mean · Zug
Conductivity (25 °C)	439.57 µS/cm	—	—	Mean · Zug
Iron	0.02 mg/l	0.2 mg/l	10 %	Mean · Zug
pH	7.48	—	—	Mean · Zug
Sodium	10.1 mg/l	200 mg/l	5 %	Mean · Zug
Sulphate	8.5 mg/l	—	—	Mean · Zug
Turbidity	0.15 TE/F	—	—	Mean · Zug

Further parameters (4)

Further parameters – Zug
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	76.5 mg/l	—	—	Mean · Zug
Magnesium	14.1 mg/l	—	—	Mean · Zug
Potassium	1.7 mg/l	—	—	Mean · Zug
Total hardness	24.8 °fH	—	—	Mean · Zug

Source: https://trinkwasser.ch/de/versorger/635/wwz-ag/3227/zug · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 6330

Cham (93413)

Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn

ZV Chamer Gruppe (Öffentliche TWV HB Pemfling)

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 09/05/2025. 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

11.1 °dH

Hardness range mittel

Key values Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10 mg/l	50 mg/l	20 %	Single value
Lead	<0,0011 mg/l below limit of quantification	10 µg/l	< 11 % *	Single value
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Single value
Sulphate	23 mg/l	250 mg/l	9 %	Single value
Sodium	13,6 mg/l	200 mg/l	7 %	Single value

Show all recorded parameters (54 — most recent value per parameter)

Microbiology (2)

Microbiology – Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	0 KBE/100 ml	0/100 ml	—	Single value
Intestinal enterococci	0 KBE/100 ml	0/100 ml	—	Single value

Chemical parameters (23)

Chemical parameters – Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn
Parameter	Value	Parametric value	Share of the parametric value	Reference
1,2-dichloroethane	<1 µg/l below limit of quantification	3 µg/l	< 33 % *	Single value
Antimony	<0,0004 mg/l below limit of quantification	5 µg/l	< 8 % *	Single value
Arsenic	<0,0002 mg/l below limit of quantification	10 µg/l	< 2 % *	Single value
Benzene	<0,30 µg/l below limit of quantification	1 µg/l	< 30 % *	Single value
Benzo(b)fluoranthene	<0,025 µg/l below limit of quantification	—	—	Single value
Benzo(ghi)perylene	<0,025 µg/l below limit of quantification	—	—	Single value
Benzo(k)fluoranthene	<0,025 µg/l below limit of quantification	—	—	Single value
Bisphenol A	<0,50 µg/l below limit of quantification	2.5 µg/l	< 20 % *	Single value
Boron	<0,06 mg/l below limit of quantification	1 mg/l	< 6 % *	Single value
Bromate	<0,0005 mg/l below limit of quantification	10 µg/l	< 5 % *	Single value
Cadmium	<0,0006 mg/l below limit of quantification	3 µg/l	< 20 % *	Single value
Chromium	<0,0012 mg/l below limit of quantification	25 µg/l	< 5 % *	Single value
Copper	<0,013 mg/l below limit of quantification	2 mg/l	< 0.7 % *	Single value
Fluoride	0,06 mg/l	1.5 mg/l	4 %	Single value
Lead	<0,0011 mg/l below limit of quantification	10 µg/l	< 11 % *	Single value
Mercury	<0,00008 mg/l below limit of quantification	1 µg/l	< 8 % *	Single value
Nickel	<0,0003 mg/l below limit of quantification	20 µg/l	< 1 % *	Single value
Nitrate	10 mg/l	50 mg/l	20 %	Single value
Nitrite	<0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Single value
Selenium	<0,0010 mg/l below limit of quantification	10 µg/l	< 10 % *	Single value
Tetrachloroethene	<1 µg/l below limit of quantification	—	—	Single value
Trichloroethene	<1 µg/l below limit of quantification	—	—	Single value
Uranium	1 µg/l	10 µg/l	10 %	Single value

Indicator parameters (18)

Indicator parameters – Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aluminium	<0,013 mg/l below limit of quantification	0.2 mg/l	< 6 % *	Single value
Ammonium	<0,05 mg/l below limit of quantification	0.5 mg/l	< 10 % *	Single value
Calcite dissolution capacity	-5,8 mg/l	5 mg/l CaCO3	—	Single value
Chloride	39 mg/l	250 mg/l	16 %	Single value
Coliform bacteria	0 KBE/100 ml	0/100 ml	—	Single value
Colony count 22 °C	1 KBE/ml	ohne anormale Veränderung	—	Single value
Colony count 36 °C	0 KBE/ml	ohne anormale Veränderung	—	Single value
Colour	<0,1 m-1 below limit of quantification	0.5 m⁻¹	—	Single value
Iron	<0,012 mg/l below limit of quantification	0.2 mg/l	< 6 % *	Single value
Manganese	<0,0004 mg/l below limit of quantification	50 µg/l	< 0.8 % *	Single value
Odour	ohne	für den Verbraucher annehmbar	—	Single value
pH	7,7	6,5–9,5	—	Single value
Sodium	13,6 mg/l	200 mg/l	7 %	Single value
Sulphate	23 mg/l	250 mg/l	9 %	Single value
Taste	ohne	für den Verbraucher annehmbar	—	Single value
Temperature	12,0 °C	—	—	Single value
Total organic carbon (TOC)	2,1 mg/l	ohne anormale Veränderung	—	Single value
Turbidity	0,3 NTU	1 NTU	—	Single value

Further parameters (11)

Further parameters – Öffentliche TWV HB Pemfling, Pemfling, Volksschule, Kaltwassereingang, PN-Hahn
Parameter	Value	Parametric value	Share of the parametric value	Reference
Acid capacity to pH 4.3	2,8 mmol/l	—	—	Single value
Acid capacity to pH 8.2	0,0 mmol/l	—	—	Single value
Anion quotient	9,79	—	—	Single value
Base capacity to pH 8.2	0,10 mmol/l	—	—	Single value
Calcium	72,9 mg/l	—	—	Single value
Copper quotient	11,33	—	—	Single value
Hardness range (WRMG)	mittel	—	—	Single value
Hydrogen carbonate	5,12 mg/l	—	—	Single value
Magnesium	3,87 mg/l	—	—	Single value
Potassium	2,70 mg/l	—	—	Single value
Total hardness	11,08 °dH	—	—	Single value

Source: https://www.wasserversorgung-chamer-gruppe.de/download/trinkwasseruntersuchung-entnahmestelle-hochbehaelter-pemfling/?wpdmdl=652 · 02.06.2025 · Probenahme 09.05.2025, 10:05 · retrieved on 13/07/2026

Postcodes in this zone: 93413

Show 1 more supply zone

Wasserwerk Wetterfeld (Stadtwerke Cham)

Stadtwerke Cham GmbH

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 29/06/2025. 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

7.9 °dH

Hardness range soft

Key values Wasserwerk Wetterfeld (Stadtwerke Cham)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17,00 mg/l	50 mg/l	34 %	Single value
Sulphate	18,40 mg/l	250 mg/l	7 %	Single value
Sodium	6,60 mg/l	200 mg/l	3 %	Single value

Show all recorded parameters (9 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Wetterfeld (Stadtwerke Cham)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	17,00 mg/l	50 mg/l	34 %	Single value

Indicator parameters (4)

Indicator parameters – Wasserwerk Wetterfeld (Stadtwerke Cham)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	21,30 mg/l	250 mg/l	9 %	Single value
Sodium	6,60 mg/l	200 mg/l	3 %	Single value
Sulphate	18,40 mg/l	250 mg/l	7 %	Single value
Temperature	10,70 °C	—	—	Single value

Further parameters (4)

Further parameters – Wasserwerk Wetterfeld (Stadtwerke Cham)
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	46,90 mg/l	—	—	Single value
Magnesium	5,60 mg/l	—	—	Single value
Potassium	1,90 mg/l	—	—	Single value
Total hardness	1,40 mmol/l	—	—	Single value

Source: https://www.stadtwerke-cham.de/wp-content/uploads/2025/07/Trinkwasserqualitaet-2025.pdf · 29.06.2025 · retrieved on 11/07/2026

Postcodes in this zone: 93413

Frequently asked questions about drinking water in Cham

How hard is the water in Cham?: WWZ AG publishes a total hardness of 26.1 °fH for the supply zone Cham Hagendorn und Hünenberg — that corresponds to 14.6 °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 Cham?: WWZ AG publishes a nitrate value of 14.89 mg/l for the supply zone Cham Hagendorn und Hünenberg. The statutory parametric value is 40 mg/l; the measured value represents 37 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Cham?: WWZ AG. The values shown here come from the supply zone Cham Hagendorn und Hünenberg 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.