How hard is the water in Hammah?

Trinkwasserverband Stader Land publishes a total hardness of 12.2 °dH for the supply zone Wasserwerk Dollern (hardness range Mittel). 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: 02.04.2026, retrieved on 13/07/2026.

Who supplies the drinking water in Hammah?

Trinkwasserverband Stader Land. The values shown here come from the supply zone Wasserwerk Dollern 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 Hammah

4 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.

Wasserwerk Dollern

Trinkwasserverband Stader Land

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

Water hardness

12.2 °dH

Hardness range Mittel

No core values are available for this zone yet.

Show all recorded parameters (5 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Dollern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrite	< 0,01 below limit of quantification Unit not stated in the document	0.5 mg/l	—	Single value · Wasserwerk Dollern

Indicator parameters (2)

Indicator parameters – Wasserwerk Dollern
Parameter	Value	Parametric value	Share of the parametric value	Reference
pH	7,47	6,5–9,5	—	Single value · Wasserwerk Dollern
Temperature	9,0 °	—	—	Single value · Wasserwerk Dollern

Further parameters (2)

Further parameters – Wasserwerk Dollern
Parameter	Value	Parametric value	Share of the parametric value	Reference
Hardness range (WRMG)	Mittel	—	—	Single value · Wasserwerk Dollern
Total hardness	12,2 °dH	—	—	Single value · Wasserwerk Dollern

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://twv-staderland.de/wp-content/uploads/2026/04/20260402_Wasseranalyse.pdf · 02.04.2026 · I. Quartal 2026 (Dollern, Himmelpforten, Heinbockel) / IV. Quartal 2025 (Wingst) · retrieved on 13/07/2026

Postcodes in this zone: 21714

Show 3 more supply zones

Wasserwerk Heinbockel

Trinkwasserverband Stader Land

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

Water hardness

8.2 °dH

Hardness range Mittel

No core values are available for this zone yet.

Show all recorded parameters (5 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Heinbockel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrite	< 0,01 below limit of quantification Unit not stated in the document	0.5 mg/l	—	Single value · Wasserwerk Heinbockel

Indicator parameters (2)

Indicator parameters – Wasserwerk Heinbockel
Parameter	Value	Parametric value	Share of the parametric value	Reference
pH	7,78	6,5–9,5	—	Single value · Wasserwerk Heinbockel
Temperature	4,9 °	—	—	Single value · Wasserwerk Heinbockel

Further parameters (2)

Further parameters – Wasserwerk Heinbockel
Parameter	Value	Parametric value	Share of the parametric value	Reference
Hardness range (WRMG)	Mittel	—	—	Single value · Wasserwerk Heinbockel
Total hardness	8,2 °dH	—	—	Single value · Wasserwerk Heinbockel

Postcodes in this zone: 21714

Wasserwerk Himmelpforten

Trinkwasserverband Stader Land

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

Water hardness

15.6 °dH

Hardness range Hart

No core values are available for this zone yet.

Show all recorded parameters (5 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Wasserwerk Himmelpforten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrite	< 0,01 below limit of quantification Unit not stated in the document	0.5 mg/l	—	Single value · Wasserwerk Himmelpforten

Indicator parameters (2)

Indicator parameters – Wasserwerk Himmelpforten
Parameter	Value	Parametric value	Share of the parametric value	Reference
pH	7,51	6,5–9,5	—	Single value · Wasserwerk Himmelpforten
Temperature	10,3 °	—	—	Single value · Wasserwerk Himmelpforten

Further parameters (2)

Further parameters – Wasserwerk Himmelpforten
Parameter	Value	Parametric value	Share of the parametric value	Reference
Hardness range (WRMG)	Hart	—	—	Single value · Wasserwerk Himmelpforten
Total hardness	15,6 °dH	—	—	Single value · Wasserwerk Himmelpforten

Postcodes in this zone: 21714

Zukauf WV Wingst

Trinkwasserverband Stader Land

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

Water hardness

8.4 °dH

Hardness range Mittel

No core values are available for this zone yet.

Show all recorded parameters (5 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – Zukauf WV Wingst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrite	< 0,01 below limit of quantification Unit not stated in the document	0.5 mg/l	—	Single value · Zukauf WV Wingst

Indicator parameters (2)

Indicator parameters – Zukauf WV Wingst
Parameter	Value	Parametric value	Share of the parametric value	Reference
pH	8,04	6,5–9,5	—	Single value · Zukauf WV Wingst
Temperature	10,4 °	—	—	Single value · Zukauf WV Wingst

Further parameters (2)

Further parameters – Zukauf WV Wingst
Parameter	Value	Parametric value	Share of the parametric value	Reference
Hardness range (WRMG)	Mittel	—	—	Single value · Zukauf WV Wingst
Total hardness	8,4 °dH	—	—	Single value · Zukauf WV Wingst

Postcodes in this zone: 21714

Frequently asked questions about drinking water in Hammah

How hard is the water in Hammah?: Trinkwasserverband Stader Land publishes a total hardness of 12.2 °dH for the supply zone Wasserwerk Dollern (hardness range Mittel). 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: 02.04.2026, retrieved on 13/07/2026.
Who supplies the drinking water in Hammah?: Trinkwasserverband Stader Land. The values shown here come from the supply zone Wasserwerk Dollern 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.