How hard is the water in Postcode 7175?

Wasserversorgung Gemeinde Sumvitg publishes a total hardness of 8.04 °fH for the supply zone Sumvitg / Brunnen Cadruvi — that corresponds to 4.5 °dH. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: Publication by the water supplier, retrieved on 12/08/2026.

How much nitrate is in the drinking water in Postcode 7175?

Wasserversorgung Gemeinde Sumvitg publishes a nitrate value of < 2.0 for the supply zone Sumvitg / Brunnen Cadruvi. The statutory parametric value is 40 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Publication by the water supplier, retrieved on 12/08/2026.

Who supplies the drinking water in Postcode 7175?

Wasserversorgung Gemeinde Sumvitg. The values shown here come from the supply zone Sumvitg / Brunnen Cadruvi 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 7175 (Switzerland)

Q: Who supplies the drinking water in Postcode 7175?

Wasserversorgung Gemeinde Sumvitg. The values shown here come from the supply zone Sumvitg / Brunnen Cadruvi 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.

The drinking water in Postcode 7175 has a total hardness of 4.5 °dH. Nitrate reaches < 2.0, the statutory parametric value is 40 mg/l. Measured in supply zone Sumvitg / Brunnen Cadruvi of Wasserversorgung Gemeinde Sumvitg, retrieved on 12/08/2026.

One supply zone, water supplier: Wasserversorgung Gemeinde Sumvitg.

The values come from the SVGW platform trinkwasser.ch. Water utilities report there voluntarily; the SVGW does not verify the data. For each parameter, the minimum, maximum, average and median of one year are published; hardness in French degrees (°fH). On 20 August 2026 the SVGW objected in writing to the use of this data for maunawai.info: we do not show values from this source, but only name the parameters measured there. Analyses we obtained directly from the water supplier are shown in full.

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.

Sumvitg / Brunnen Cadruvi

Wasserversorgung Gemeinde Sumvitg

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

Water hardness

4.5 °dH

Key values Sumvitg / Brunnen Cadruvi
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	< 2.0 below limit of quantification Unit not stated in the document	40 mg/l	—	Single value · Sumvitg / Brunnen Cadruvi
Escherichia coli (E. coli)	nn KBE/ 100 ml not detectable	0/100 ml	—	Single value · Sumvitg / Brunnen Cadruvi

Show all recorded parameters (7 — most recent value per parameter)

Microbiology (3)

Microbiology – Sumvitg / Brunnen Cadruvi
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	nn KBE/ ml not detectable	300 1/ml	—	Single value · Sumvitg / Brunnen Cadruvi
Escherichia coli (E. coli)	nn KBE/ 100 ml not detectable	0/100 ml	—	Single value · Sumvitg / Brunnen Cadruvi
Intestinal enterococci	nn KBE/ 100 ml not detectable	0/100 ml	—	Single value · Sumvitg / Brunnen Cadruvi

Chemical parameters (1)

Chemical parameters – Sumvitg / Brunnen Cadruvi
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	< 2.0 below limit of quantification Unit not stated in the document	40 mg/l	—	Single value · Sumvitg / Brunnen Cadruvi

Further parameters (3)

Further parameters – Sumvitg / Brunnen Cadruvi
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	30.2	—	—	Single value · Sumvitg / Brunnen Cadruvi
Magnesium	1.2	—	—	Single value · Sumvitg / Brunnen Cadruvi
Total hardness	8.04 °fH	—	—	Single value · Sumvitg / Brunnen Cadruvi

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://sumvitg.ch/wp/wp-content/uploads/2026/02/Untersuchungsbericht-2025.pdf · 2025 · retrieved on 12/08/2026

Frequent questions about postcode 7175

How hard is the water in Postcode 7175?: Wasserversorgung Gemeinde Sumvitg publishes a total hardness of 8.04 °fH for the supply zone Sumvitg / Brunnen Cadruvi — that corresponds to 4.5 °dH. Hardness indicates how much calcium and magnesium are dissolved in the water. It is not a quality assessment: there is no parametric value for hardness. Basis: Publication by the water supplier, retrieved on 12/08/2026.
How much nitrate is in the drinking water in Postcode 7175?: Wasserversorgung Gemeinde Sumvitg publishes a nitrate value of < 2.0 for the supply zone Sumvitg / Brunnen Cadruvi. The statutory parametric value is 40 mg/l; the measured value lies below it and cannot be specified more precisely below the limit of quantification. Basis: Publication by the water supplier, retrieved on 12/08/2026.
Who supplies the drinking water in Postcode 7175?: Wasserversorgung Gemeinde Sumvitg. The values shown here come from the supply zone Sumvitg / Brunnen Cadruvi 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.