How hard is the water in Schwalmstadt?

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt) publishes a total hardness of 7.7 °dH for the supply zone I. (hardness range weich). 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: 12.09.2025, retrieved on 11/07/2026.

How much nitrate is in the drinking water in Schwalmstadt?

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt) publishes a nitrate value of 16,7 mg/l for the supply zone I.. The statutory parametric value is 50 mg/l; the measured value represents 33 % of the parametric value. Basis: 12.09.2025, retrieved on 11/07/2026.

Who supplies the drinking water in Schwalmstadt?

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt). The values shown here come from the supply zone I. 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 Schwalmstadt

7 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.

I.

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

7.7 °dH

Hardness range weich

Key values I.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	16,7 mg/l	50 mg/l	33 %	Single value · I.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · I.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · I.
Sulphate	19,5 mg/l	250 mg/l	8 %	Single value · I.
Sodium	6,4 mg/l	200 mg/l	3 %	Single value · I.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – I.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · I.
Intestinal enterococci	n.a. not detectable Unit not stated in the document	0/100 ml	—	Single value · I.

Chemical parameters (12)

Chemical parameters – I.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · I.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · I.
Copper	0,005 mg/l	2 mg/l	0.3 %	Single value · I.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · I.
Fluoride	0,14 mg/l	1.5 mg/l	9 %	Single value · I.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · I.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · I.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · I.
Nitrate	16,7 mg/l	50 mg/l	33 %	Single value · I.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · I.
Polycyclic aromatic hydrocarbons	0,00002 mg/l	0.1 µg/l	20 %	Single value · I.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · I.

Indicator parameters (8)

Indicator parameters – I.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11,9 mg/l	250 mg/l	5 %	Single value · I.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · I.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · I.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · I.
pH	7,57	6,5–9,5	—	Single value · I.
Sodium	6,4 mg/l	200 mg/l	3 %	Single value · I.
Sulphate	19,5 mg/l	250 mg/l	8 %	Single value · I.
Total organic carbon (TOC)	0,38	ohne anormale Veränderung	—	Single value · I.

Further parameters (5)

Further parameters – I.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	43,2 mg/l	—	—	Single value · I.
Hardness range (WRMG)	weich	—	—	Single value · I.
Magnesium	7,3 mg/l	—	—	Single value · I.
Potassium	2,34 mg/l	—	—	Single value · I.
Total hardness	7,73 °dH	—	—	Single value · I.

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://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

Show 6 more supply zones

II.

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

6.6 °dH

Hardness range weich

Key values II.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	7,2 mg/l	50 mg/l	14 %	Single value · II.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · II.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · II.
Sulphate	14,7 mg/l	250 mg/l	6 %	Single value · II.
Sodium	6,8 mg/l	200 mg/l	3 %	Single value · II.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – II.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · II.
Intestinal enterococci	n.a. not detectable Unit not stated in the document	0/100 ml	—	Single value · II.

Chemical parameters (12)

Chemical parameters – II.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · II.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · II.
Copper	0,019 mg/l	2 mg/l	1 %	Single value · II.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · II.
Fluoride	0,13 mg/l	1.5 mg/l	9 %	Single value · II.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · II.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · II.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · II.
Nitrate	7,2 mg/l	50 mg/l	14 %	Single value · II.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · II.
Polycyclic aromatic hydrocarbons	0,00001 mg/l	0.1 µg/l	10 %	Single value · II.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · II.

Indicator parameters (8)

Indicator parameters – II.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8,4 mg/l	250 mg/l	3 %	Single value · II.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · II.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · II.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · II.
pH	7,79	6,5–9,5	—	Single value · II.
Sodium	6,8 mg/l	200 mg/l	3 %	Single value · II.
Sulphate	14,7 mg/l	250 mg/l	6 %	Single value · II.
Total organic carbon (TOC)	0,26	ohne anormale Veränderung	—	Single value · II.

Further parameters (5)

Further parameters – II.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	28,9 mg/l	—	—	Single value · II.
Hardness range (WRMG)	weich	—	—	Single value · II.
Magnesium	10,9 mg/l	—	—	Single value · II.
Potassium	3,33 mg/l	—	—	Single value · II.
Total hardness	6,56 °dH	—	—	Single value · II.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

III

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

6.3 °dH

Hardness range weich

Key values III
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,9 mg/l	50 mg/l	26 %	Single value · III.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · III.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · III.
Sulphate	17,0 mg/l	250 mg/l	7 %	Single value · III.
Sodium	7,4 mg/l	200 mg/l	4 %	Single value · III.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – III
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · III.
Intestinal enterococci	n.a. not detectable Unit not stated in the document	0/100 ml	—	Single value · III.

Chemical parameters (12)

Chemical parameters – III
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · III.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · III.
Copper	0,005 mg/l	2 mg/l	0.3 %	Single value · III.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · III.
Fluoride	0,11 mg/l	1.5 mg/l	7 %	Single value · III.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · III.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · III.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · III.
Nitrate	12,9 mg/l	50 mg/l	26 %	Single value · III.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · III.
Polycyclic aromatic hydrocarbons	0,00002 mg/l	0.1 µg/l	20 %	Single value · III.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · III.

Indicator parameters (8)

Indicator parameters – III
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	13,3 mg/l	250 mg/l	5 %	Single value · III.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · III.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · III.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · III.
pH	8,04	6,5–9,5	—	Single value · III.
Sodium	7,4 mg/l	200 mg/l	4 %	Single value · III.
Sulphate	17,0 mg/l	250 mg/l	7 %	Single value · III.
Total organic carbon (TOC)	0,44	ohne anormale Veränderung	—	Single value · III.

Further parameters (5)

Further parameters – III
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	28,2 mg/l	—	—	Single value · III.
Hardness range (WRMG)	weich	—	—	Single value · III.
Magnesium	10,2 mg/l	—	—	Single value · III.
Potassium	1,93 mg/l	—	—	Single value · III.
Total hardness	6,30 °dH	—	—	Single value · III.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

IV.

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

10.2 °dH

Hardness range mittel

Key values IV.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	5,7 mg/l	50 mg/l	11 %	Single value · IV.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · IV.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · IV.
Sulphate	25,5 mg/l	250 mg/l	10 %	Single value · IV.
Sodium	5,3 mg/l	200 mg/l	3 %	Single value · IV.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – IV.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · IV.
Intestinal enterococci	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · IV.

Chemical parameters (12)

Chemical parameters – IV.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · IV.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · IV.
Copper	0,021 mg/l	2 mg/l	1 %	Single value · IV.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · IV.
Fluoride	0,15 mg/l	1.5 mg/l	10 %	Single value · IV.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · IV.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · IV.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · IV.
Nitrate	5,7 mg/l	50 mg/l	11 %	Single value · IV.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · IV.
Polycyclic aromatic hydrocarbons	0,00001 mg/l	0.1 µg/l	10 %	Single value · IV.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · IV.

Indicator parameters (8)

Indicator parameters – IV.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	6,7 mg/l	250 mg/l	3 %	Single value · IV.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · IV.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · IV.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · IV.
pH	8,19	6,5–9,5	—	Single value · IV.
Sodium	5,3 mg/l	200 mg/l	3 %	Single value · IV.
Sulphate	25,5 mg/l	250 mg/l	10 %	Single value · IV.
Total organic carbon (TOC)	0,21	ohne anormale Veränderung	—	Single value · IV.

Further parameters (5)

Further parameters – IV.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	48,9 mg/l	—	—	Single value · IV.
Hardness range (WRMG)	mittel	—	—	Single value · IV.
Magnesium	14,4 mg/l	—	—	Single value · IV.
Potassium	2,86 mg/l	—	—	Single value · IV.
Total hardness	10,15 °dH	—	—	Single value · IV.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

V.

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

8.6 °dH

Hardness range weich

Key values V.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	14,6 mg/l	50 mg/l	29 %	Single value · V.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · V.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · V.
Sulphate	9,6 mg/l	250 mg/l	4 %	Single value · V.
Sodium	4,4 mg/l	200 mg/l	2 %	Single value · V.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – V.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · V.
Intestinal enterococci	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · V.

Chemical parameters (12)

Chemical parameters – V.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · V.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · V.
Copper	0,013 mg/l	2 mg/l	0.7 %	Single value · V.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · V.
Fluoride	0,18 mg/l	1.5 mg/l	12 %	Single value · V.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · V.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · V.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · V.
Nitrate	14,6 mg/l	50 mg/l	29 %	Single value · V.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · V.
Polycyclic aromatic hydrocarbons	0,00002 mg/l	0.1 µg/l	20 %	Single value · V.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · V.

Indicator parameters (8)

Indicator parameters – V.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	8,0 mg/l	250 mg/l	3 %	Single value · V.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · V.
Iron	0,05 mg/l	0.2 mg/l	25 %	Single value · V.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · V.
pH	7,10	6,5–9,5	—	Single value · V.
Sodium	4,4 mg/l	200 mg/l	2 %	Single value · V.
Sulphate	9,6 mg/l	250 mg/l	4 %	Single value · V.
Total organic carbon (TOC)	0,14	ohne anormale Veränderung	—	Single value · V.

Further parameters (5)

Further parameters – V.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	34,6 mg/l	—	—	Single value · V.
Hardness range (WRMG)	weich	—	—	Single value · V.
Magnesium	16,2 mg/l	—	—	Single value · V.
Potassium	2,25 mg/l	—	—	Single value · V.
Total hardness	8,59 °dH	—	—	Single value · V.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

VI.

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

10.8 °dH

Hardness range mittel

Key values VI.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	3,8 mg/l	50 mg/l	8 %	Single value · VI.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · VI.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VI.
Sulphate	26,9 mg/l	250 mg/l	11 %	Single value · VI.
Sodium	4,6 mg/l	200 mg/l	2 %	Single value · VI.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – VI.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VI.
Intestinal enterococci	n.a. not detectable Unit not stated in the document	0/100 ml	—	Single value · VI.

Chemical parameters (12)

Chemical parameters – VI.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · VI.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · VI.
Copper	0,005 mg/l	2 mg/l	0.3 %	Single value · VI.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · VI.
Fluoride	0,17 mg/l	1.5 mg/l	11 %	Single value · VI.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · VI.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · VI.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · VI.
Nitrate	3,8 mg/l	50 mg/l	8 %	Single value · VI.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · VI.
Polycyclic aromatic hydrocarbons	0,00002 mg/l	0.1 µg/l	20 %	Single value · VI.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · VI.

Indicator parameters (8)

Indicator parameters – VI.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	5,8 mg/l	250 mg/l	2 %	Single value · VI.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VI.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · VI.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · VI.
pH	7,84	6,5–9,5	—	Single value · VI.
Sodium	4,6 mg/l	200 mg/l	2 %	Single value · VI.
Sulphate	26,9 mg/l	250 mg/l	11 %	Single value · VI.
Total organic carbon (TOC)	0,20	ohne anormale Veränderung	—	Single value · VI.

Further parameters (5)

Further parameters – VI.
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	48,6 mg/l	—	—	Single value · VI.
Hardness range (WRMG)	mittel	—	—	Single value · VI.
Magnesium	17,5 mg/l	—	—	Single value · VI.
Potassium	2,5 mg/l	—	—	Single value · VI.
Total hardness	10,84 °dH	—	—	Single value · VI.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

VII

Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt)

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

Water hardness

9.4 °dH

Hardness range mittel

Key values VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	12,3 mg/l	50 mg/l	25 %	Single value · VII.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · VII.
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VII.
Sulphate	25,6 mg/l	250 mg/l	10 %	Single value · VII.
Sodium	4,8 mg/l	200 mg/l	2 %	Single value · VII.

Show all recorded parameters (27 — most recent value per parameter)

Microbiology (2)

Microbiology – VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Escherichia coli (E. coli)	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VII.
Intestinal enterococci	n.a. not detectable Unit not stated in the document	0/100 ml	—	Single value · VII.

Chemical parameters (12)

Chemical parameters – VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Cadmium	0,0002 mg/l	3 µg/l	7 %	Single value · VII.
Chromium	0,005 mg/l	25 µg/l	20 %	Single value · VII.
Copper	0,005 mg/l	2 mg/l	0.3 %	Single value · VII.
Cyanide	0,01 mg/l	50 µg/l	20 %	Single value · VII.
Fluoride	0,17 mg/l	1.5 mg/l	11 %	Single value · VII.
Lead	0,002 mg/l	10 µg/l	20 %	Single value · VII.
Mercury	0,0002 mg/l	1 µg/l	20 %	Single value · VII.
Nickel	0,002 mg/l	20 µg/l	10 %	Single value · VII.
Nitrate	12,3 mg/l	50 mg/l	25 %	Single value · VII.
Nitrite	0,02 mg/l	0.5 mg/l	4 %	Single value · VII.
Polycyclic aromatic hydrocarbons	0,00002 mg/l	0.1 µg/l	20 %	Single value · VII.
Selenium	0,001 mg/l	10 µg/l	10 %	Single value · VII.

Indicator parameters (8)

Indicator parameters – VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	11,6 mg/l	250 mg/l	5 %	Single value · VII.
Coliform bacteria	n.n. not detectable Unit not stated in the document	0/100 ml	—	Single value · VII.
Iron	0,02 mg/l	0.2 mg/l	10 %	Single value · VII.
Manganese	0,01 mg/l	50 µg/l	20 %	Single value · VII.
pH	7,64	6,5–9,5	—	Single value · VII.
Sodium	4,8 mg/l	200 mg/l	2 %	Single value · VII.
Sulphate	25,6 mg/l	250 mg/l	10 %	Single value · VII.
Total organic carbon (TOC)	0,32	ohne anormale Veränderung	—	Single value · VII.

Further parameters (5)

Further parameters – VII
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	44,4 mg/l	—	—	Single value · VII.
Hardness range (WRMG)	mittel	—	—	Single value · VII.
Magnesium	13,7 mg/l	—	—	Single value · VII.
Potassium	2,53 mg/l	—	—	Single value · VII.
Total hardness	9,38 °dH	—	—	Single value · VII.

Source: https://schwalmstadt.de/images/downloads/pdf-onlinedienste/Trinkwasserqualität_Schwalmstadt_2024-25.pdf · 12.09.2025 · retrieved on 11/07/2026

Postcodes in this zone: 34613

Frequently asked questions about drinking water in Schwalmstadt

How hard is the water in Schwalmstadt?: Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt) publishes a total hardness of 7.7 °dH for the supply zone I. (hardness range weich). 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: 12.09.2025, retrieved on 11/07/2026.
How much nitrate is in the drinking water in Schwalmstadt?: Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt) publishes a nitrate value of 16,7 mg/l for the supply zone I.. The statutory parametric value is 50 mg/l; the measured value represents 33 % of the parametric value. Basis: 12.09.2025, retrieved on 11/07/2026.
Who supplies the drinking water in Schwalmstadt?: Stadt Schwalmstadt (Wasserwerk der Stadt Schwalmstadt). The values shown here come from the supply zone I. 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.