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Drinking water in Wislikofen

8 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.

5323 Rietheim

Gemeinde Zurzach

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

Water hardness
17.6 °dH
Hardness range hard
Key values 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 19 mg/l 40 mg/l
48 %
Mean · 5323 Rietheim
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5323 Rietheim
Sulphate 28 mg/l Mean · 5323 Rietheim
Sodium 8.3 mg/l 200 mg/l
4 %
Mean · 5323 Rietheim
Show all recorded parameters (15 — most recent value per parameter)

Microbiology (3)

Microbiology – 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 1 KBE/ml 300 1/ml Mean · 5323 Rietheim
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5323 Rietheim
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5323 Rietheim

Chemical parameters (1)

Chemical parameters – 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 19 mg/l 40 mg/l
48 %
Mean · 5323 Rietheim

Metabolites (2)

Metabolites – 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Chlorothalonil metabolite R417888 < 0.02 µg/l
below limit of quantification
0.1 µg/l
< 20 % *
Mean · 5323 Rietheim
Chlorothalonil metabolite R471811 0.0765 µg/l 0.1 µg/l
77 %
Mean · 5323 Rietheim

* 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.

Indicator parameters (5)

Indicator parameters – 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Chloride 14.8 mg/l Mean · 5323 Rietheim
Conductivity (25 °C) 625 µS/cm Mean · 5323 Rietheim
Sodium 8.3 mg/l 200 mg/l
4 %
Mean · 5323 Rietheim
Sulphate 28 mg/l Mean · 5323 Rietheim
Temperature 17 °C Mean · 5323 Rietheim

Further parameters (4)

Further parameters – 5323 Rietheim
Parameter Value Parametric value Share of the parametric value Reference
Calcium 100 mg/l Mean · 5323 Rietheim
Magnesium 16.2 mg/l Mean · 5323 Rietheim
Potassium 2.5 mg/l Mean · 5323 Rietheim
Total hardness 31.5 °fH Mean · 5323 Rietheim

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/730/gemeinde-zurzach/3563/5323-rietheim · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

Show 7 more supply zones

5330 Bad Zurzach

Gemeinde Zurzach

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

Water hardness
17.9 °dH
Hardness range hard
Key values 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 16.3 mg/l 40 mg/l
41 %
Mean · 5330 Bad Zurzach
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5330 Bad Zurzach
Sulphate 49 mg/l Mean · 5330 Bad Zurzach
Sodium 9.8 mg/l 200 mg/l
5 %
Mean · 5330 Bad Zurzach
Show all recorded parameters (16 — most recent value per parameter)

Microbiology (3)

Microbiology – 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 34 KBE/ml 300 1/ml Mean · 5330 Bad Zurzach
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5330 Bad Zurzach
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5330 Bad Zurzach

Chemical parameters (1)

Chemical parameters – 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 16.3 mg/l 40 mg/l
41 %
Mean · 5330 Bad Zurzach

Metabolites (2)

Metabolites – 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Chlorothalonil metabolite R417888 < 0.02 µg/l
below limit of quantification
0.1 µg/l
< 20 % *
Mean · 5330 Bad Zurzach
Chlorothalonil metabolite R471811 0.0405 µg/l 0.1 µg/l
41 %
Mean · 5330 Bad Zurzach

* 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.

Indicator parameters (6)

Indicator parameters – 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Chloride 16.3 mg/l Mean · 5330 Bad Zurzach
Conductivity (25 °C) 500 µS/cm Mean · 5330 Bad Zurzach
pH 7.4 Mean · 5330 Bad Zurzach
Sodium 9.8 mg/l 200 mg/l
5 %
Mean · 5330 Bad Zurzach
Sulphate 49 mg/l Mean · 5330 Bad Zurzach
Temperature 16 °C Mean · 5330 Bad Zurzach

Further parameters (4)

Further parameters – 5330 Bad Zurzach
Parameter Value Parametric value Share of the parametric value Reference
Calcium 104 mg/l Mean · 5330 Bad Zurzach
Magnesium 16.1 mg/l Mean · 5330 Bad Zurzach
Potassium 3.05 mg/l Mean · 5330 Bad Zurzach
Total hardness 32 °fH Mean · 5330 Bad Zurzach

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/730/gemeinde-zurzach/3567/5330-bad-zurzach · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

5332 Rekingen

Gemeinde Zurzach

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

Water hardness
17.4 °dH
Hardness range hard
Key values 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 16.3 mg/l 40 mg/l
41 %
Mean · 5332 Rekingen
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5332 Rekingen
Sulphate 49 mg/l Mean · 5332 Rekingen
Sodium 9.8 mg/l 200 mg/l
5 %
Mean · 5332 Rekingen
Show all recorded parameters (16 — most recent value per parameter)

Microbiology (3)

Microbiology – 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 34 KBE/ml 300 1/ml Mean · 5332 Rekingen
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5332 Rekingen
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5332 Rekingen

Chemical parameters (1)

Chemical parameters – 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 16.3 mg/l 40 mg/l
41 %
Mean · 5332 Rekingen

Metabolites (2)

Metabolites – 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Chlorothalonil metabolite R417888 < 0.02 µg/l
below limit of quantification
0.1 µg/l
< 20 % *
Mean · 5332 Rekingen
Chlorothalonil metabolite R471811 0.0405 µg/l 0.1 µg/l
41 %
Mean · 5332 Rekingen

* 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.

Indicator parameters (6)

Indicator parameters – 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Chloride 16.3 mg/l Mean · 5332 Rekingen
Conductivity (25 °C) 500 µS/cm Mean · 5332 Rekingen
pH 7.4 Mean · 5332 Rekingen
Sodium 9.8 mg/l 200 mg/l
5 %
Mean · 5332 Rekingen
Sulphate 49 mg/l Mean · 5332 Rekingen
Temperature 16 °C Mean · 5332 Rekingen

Further parameters (4)

Further parameters – 5332 Rekingen
Parameter Value Parametric value Share of the parametric value Reference
Calcium 104 mg/l Mean · 5332 Rekingen
Magnesium 16.1 mg/l Mean · 5332 Rekingen
Potassium 3.05 mg/l Mean · 5332 Rekingen
Total hardness 31 °fH Mean · 5332 Rekingen

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/730/gemeinde-zurzach/3564/5332-rekingen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

5333 Baldingen

Gemeinde Zurzach

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

Water hardness
14.4 °dH
Hardness range hard
Key values 5333 Baldingen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 25.41 mg/l 40 mg/l
64 %
Mean · 5333 Baldingen
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5333 Baldingen
Sodium 4.6 mg/l 200 mg/l
2 %
Mean · 5333 Baldingen
Show all recorded parameters (10 — most recent value per parameter)

Microbiology (3)

Microbiology – 5333 Baldingen
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 6.23 KBE/ml 300 1/ml Mean · 5333 Baldingen
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5333 Baldingen
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5333 Baldingen

Chemical parameters (1)

Chemical parameters – 5333 Baldingen
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 25.41 mg/l 40 mg/l
64 %
Mean · 5333 Baldingen

Indicator parameters (2)

Indicator parameters – 5333 Baldingen
Parameter Value Parametric value Share of the parametric value Reference
Sodium 4.6 mg/l 200 mg/l
2 %
Mean · 5333 Baldingen
Temperature 8.5 °C Mean · 5333 Baldingen

Further parameters (4)

Further parameters – 5333 Baldingen
Parameter Value Parametric value Share of the parametric value Reference
Calcium 72.25 mg/l Mean · 5333 Baldingen
Magnesium 18.75 mg/l Mean · 5333 Baldingen
Potassium < 0.5 mg/l
below limit of quantification
Mean · 5333 Baldingen
Total hardness 25.75 °fH Mean · 5333 Baldingen

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/730/gemeinde-zurzach/3575/5333-baldingen · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

5334 Böbikon

Gemeinde Zurzach

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

Water hardness
15.9 °dH
Hardness range hard
Key values 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 28 mg/l 40 mg/l
70 %
Mean · 5334 Böbikon
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5334 Böbikon
Sodium 4.05 mg/l 200 mg/l
2 %
Mean · 5334 Böbikon
Show all recorded parameters (12 — most recent value per parameter)

Microbiology (3)

Microbiology – 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 1.5 KBE/ml 300 1/ml Mean · 5334 Böbikon
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5334 Böbikon
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5334 Böbikon

Chemical parameters (1)

Chemical parameters – 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 28 mg/l 40 mg/l
70 %
Mean · 5334 Böbikon

Metabolites (2)

Metabolites – 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Chlorothalonil metabolite R417888 0.071 µg/l 0.1 µg/l
71 %
Mean · 5334 Böbikon
Chlorothalonil metabolite R471811 0.75 µg/l 0.1 µg/l
750 % Mean above the parametric value
Mean · 5334 Böbikon

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 (3)

Indicator parameters – 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Conductivity (25 °C) 524 µS/cm Mean · 5334 Böbikon
Sodium 4.05 mg/l 200 mg/l
2 %
Mean · 5334 Böbikon
Temperature 12.41 °C Mean · 5334 Böbikon

Further parameters (3)

Further parameters – 5334 Böbikon
Parameter Value Parametric value Share of the parametric value Reference
Calcium 102.5 mg/l Mean · 5334 Böbikon
Magnesium 6.9 mg/l Mean · 5334 Böbikon
Total hardness 28.35 °fH Mean · 5334 Böbikon

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/730/gemeinde-zurzach/3574/5334-bobikon · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

5463 Wislikofen - Mellstorf

Gemeinde Zurzach

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

Water hardness
17.6 °dH
Hardness range hard
Key values 5463 Wislikofen - Mellstorf
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 21 mg/l 40 mg/l
53 %
Mean · 5463 Wislikofen - Mellstorf
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5463 Wislikofen - Mellstorf
Sodium 8.6 mg/l 200 mg/l
4 %
Mean · 5463 Wislikofen - Mellstorf
Show all recorded parameters (11 — most recent value per parameter)

Microbiology (3)

Microbiology – 5463 Wislikofen - Mellstorf
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 6 KBE/ml 300 1/ml Mean · 5463 Wislikofen - Mellstorf
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5463 Wislikofen - Mellstorf
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5463 Wislikofen - Mellstorf

Chemical parameters (1)

Chemical parameters – 5463 Wislikofen - Mellstorf
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 21 mg/l 40 mg/l
53 %
Mean · 5463 Wislikofen - Mellstorf

Indicator parameters (3)

Indicator parameters – 5463 Wislikofen - Mellstorf
Parameter Value Parametric value Share of the parametric value Reference
Chloride 14.6 mg/l Mean · 5463 Wislikofen - Mellstorf
Sodium 8.6 mg/l 200 mg/l
4 %
Mean · 5463 Wislikofen - Mellstorf
Temperature 15.2 °C Mean · 5463 Wislikofen - Mellstorf

Further parameters (4)

Further parameters – 5463 Wislikofen - Mellstorf
Parameter Value Parametric value Share of the parametric value Reference
Calcium 99 mg/l Mean · 5463 Wislikofen - Mellstorf
Magnesium 16.6 mg/l Mean · 5463 Wislikofen - Mellstorf
Potassium 2 mg/l Mean · 5463 Wislikofen - Mellstorf
Total hardness 31.5 °fH Mean · 5463 Wislikofen - Mellstorf

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.

Postcodes in this zone: 5463

5464 Rümikon

Gemeinde Zurzach

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

Water hardness
12.5 °dH
Hardness range medium
Key values 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 15 mg/l 40 mg/l
38 %
Mean · 5464 Rümikon
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5464 Rümikon
Sodium 4.6 mg/l 200 mg/l
2 %
Mean · 5464 Rümikon
Show all recorded parameters (12 — most recent value per parameter)

Microbiology (3)

Microbiology – 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 1 KBE/ml 300 1/ml Mean · 5464 Rümikon
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5464 Rümikon
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5464 Rümikon

Chemical parameters (1)

Chemical parameters – 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 15 mg/l 40 mg/l
38 %
Mean · 5464 Rümikon

Metabolites (2)

Metabolites – 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Chlorothalonil metabolite R417888 < 0.02 µg/l
below limit of quantification
0.1 µg/l
< 20 % *
Mean · 5464 Rümikon
Chlorothalonil metabolite R471811 0.096 µg/l 0.1 µg/l
96 %
Mean · 5464 Rümikon

* 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.

Indicator parameters (2)

Indicator parameters – 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Sodium 4.6 mg/l 200 mg/l
2 %
Mean · 5464 Rümikon
Temperature 12 °C Mean · 5464 Rümikon

Further parameters (4)

Further parameters – 5464 Rümikon
Parameter Value Parametric value Share of the parametric value Reference
Calcium 69 mg/l Mean · 5464 Rümikon
Magnesium 12.6 mg/l Mean · 5464 Rümikon
Potassium 0.5 mg/l Mean · 5464 Rümikon
Total hardness 22.4 °fH Mean · 5464 Rümikon

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/730/gemeinde-zurzach/3570/5464-rumikon · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

5466 Kaiserstuhl

Gemeinde Zurzach

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

Water hardness
16.6 °dH
Hardness range hard
Key values 5466 Kaiserstuhl
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 19 mg/l 40 mg/l
48 %
Mean · 5466 Kaiserstuhl
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5466 Kaiserstuhl
Sodium 13.2 mg/l 200 mg/l
7 %
Mean · 5466 Kaiserstuhl
Show all recorded parameters (10 — most recent value per parameter)

Microbiology (3)

Microbiology – 5466 Kaiserstuhl
Parameter Value Parametric value Share of the parametric value Reference
Aerobic mesophilic bacteria 30 KBE/ml 300 1/ml Mean · 5466 Kaiserstuhl
Escherichia coli (E. coli) 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5466 Kaiserstuhl
Intestinal enterococci 0 KBE/100ml 0/100 ml Maximum · Median 0 · 5466 Kaiserstuhl

Chemical parameters (1)

Chemical parameters – 5466 Kaiserstuhl
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 19 mg/l 40 mg/l
48 %
Mean · 5466 Kaiserstuhl

Indicator parameters (2)

Indicator parameters – 5466 Kaiserstuhl
Parameter Value Parametric value Share of the parametric value Reference
Sodium 13.2 mg/l 200 mg/l
7 %
Mean · 5466 Kaiserstuhl
Temperature 12.21 °C Mean · 5466 Kaiserstuhl

Further parameters (4)

Further parameters – 5466 Kaiserstuhl
Parameter Value Parametric value Share of the parametric value Reference
Calcium 94 mg/l Mean · 5466 Kaiserstuhl
Magnesium 14.8 mg/l Mean · 5466 Kaiserstuhl
Potassium 4.5 mg/l Mean · 5466 Kaiserstuhl
Total hardness 29.6 °fH Mean · 5466 Kaiserstuhl

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/730/gemeinde-zurzach/3576/5466-kaiserstuhl · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 5463

Frequently asked questions about drinking water in Wislikofen

How hard is the water in Wislikofen?
Gemeinde Zurzach publishes a total hardness of 31.5 °fH for the supply zone 5323 Rietheim — that corresponds to 17.6 °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 Wislikofen?
Gemeinde Zurzach publishes a nitrate value of 19 mg/l for the supply zone 5323 Rietheim. The statutory parametric value is 40 mg/l; the measured value represents 48 % of the parametric value. Basis: 2025, retrieved on 07/08/2026.
Who supplies the drinking water in Wislikofen?
Gemeinde Zurzach. The values shown here come from the supply zone 5323 Rietheim 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.