How hard is the water in Büetigen?

Marktgemeinde Randegg publishes a total hardness of 17.1 °dH for the supply zone 3263, Ortsnetz Perwarth - Bereich WEST (hardness range hard). 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: 2025-11-03, retrieved on 08/08/2026.

How much nitrate is in the drinking water in Büetigen?

Marktgemeinde Randegg publishes a nitrate value of 6,4 mg/l for the supply zone 3263, Ortsnetz Perwarth - Bereich WEST. The statutory parametric value is 50 mg/l; the measured value represents 13 % of the parametric value. Basis: 2025-11-03, retrieved on 08/08/2026.

Who supplies the drinking water in Büetigen?

Marktgemeinde Randegg. The values shown here come from the supply zone 3263, Ortsnetz Perwarth - Bereich WEST 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 Büetigen

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.

3263, Ortsnetz Perwarth - Bereich WEST

Marktgemeinde Randegg

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

Water hardness

17.1 °dH

Hardness range hard

Key values 3263, Ortsnetz Perwarth - Bereich WEST
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6,4 mg/l	50 mg/l	13 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Sulphate	13 mg/l	250 mg/l	5 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Sodium	5,3 mg/l	200 mg/l	3 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 3263, Ortsnetz Perwarth - Bereich WEST
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6,4 mg/l	50 mg/l	13 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST

Indicator parameters (5)

Indicator parameters – 3263, Ortsnetz Perwarth - Bereich WEST
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	2,3 mg/l	200 mg/l	1 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Conductivity (25 °C)	495 µS/cm	2,500 µS/cm	—	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
pH	7,6	6,5–9,5	—	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Sodium	5,3 mg/l	200 mg/l	3 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Sulphate	13 mg/l	250 mg/l	5 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST

Further parameters (5)

Further parameters – 3263, Ortsnetz Perwarth - Bereich WEST
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	110 mg/l	400 mg/l	27 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Carbonate hardness	15 °dH	—	—	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Magnesium	7,6 mg/l	150 mg/l	5 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Potassium	2,1 mg/l	50 mg/l	4 %	Single value · 3263, Ortsnetz Perwarth - Bereich WEST
Total hardness	17,1 °dH	—	—	Single value · 3263, Ortsnetz Perwarth - Bereich WEST

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://www.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=WB-1008&tx_abatrinkwdb_pi1_plz=3263&tx_abatrinkwdb_pi1_suche=1&cHash=8e3c4ad63c89121521b2e0cc6d0c386e · 2025-11-03 · 2025-11-03 · retrieved on 08/08/2026

Postcodes in this zone: 3263

Show 3 more supply zones

3263, Ortsteil Randegg

Marktgemeinde Randegg

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

Water hardness

15.3 °dH

Hardness range hard

Key values 3263, Ortsteil Randegg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6,4 mg/l	50 mg/l	13 %	Single value · 3263, Ortsteil Randegg
Sulphate	18 mg/l	250 mg/l	7 %	Single value · 3263, Ortsteil Randegg
Sodium	5,6 mg/l	200 mg/l	3 %	Single value · 3263, Ortsteil Randegg

Show all recorded parameters (11 — most recent value per parameter)

Chemical parameters (1)

Chemical parameters – 3263, Ortsteil Randegg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	6,4 mg/l	50 mg/l	13 %	Single value · 3263, Ortsteil Randegg

Indicator parameters (5)

Indicator parameters – 3263, Ortsteil Randegg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Chloride	5 mg/l	200 mg/l	3 %	Single value · 3263, Ortsteil Randegg
Conductivity (25 °C)	449 µS/cm	2,500 µS/cm	—	Single value · 3263, Ortsteil Randegg
pH	7,5	6,5–9,5	—	Single value · 3263, Ortsteil Randegg
Sodium	5,6 mg/l	200 mg/l	3 %	Single value · 3263, Ortsteil Randegg
Sulphate	18 mg/l	250 mg/l	7 %	Single value · 3263, Ortsteil Randegg

Further parameters (5)

Further parameters – 3263, Ortsteil Randegg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	87,2 mg/l	400 mg/l	22 %	Single value · 3263, Ortsteil Randegg
Carbonate hardness	13,2 °dH	—	—	Single value · 3263, Ortsteil Randegg
Magnesium	13,4 mg/l	150 mg/l	9 %	Single value · 3263, Ortsteil Randegg
Potassium	1,5 mg/l	50 mg/l	3 %	Single value · 3263, Ortsteil Randegg
Total hardness	15,3 °dH	—	—	Single value · 3263, Ortsteil Randegg

Source: https://www.trinkwasserinfo.at/datenbank?no_cache=1&tx_abatrinkwdb_pi1_anlagenid=WB-56&tx_abatrinkwdb_pi1_plz=3263&tx_abatrinkwdb_pi1_suche=1&cHash=9631a265a8c2367b63147333b2a88007 · 2025-11-03 · 2025-11-03 · retrieved on 08/08/2026

Postcodes in this zone: 3263

Aarberg

Evolon AG

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

Water hardness

11.6 °dH

Hardness range medium

Key values Aarberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.1 mg/l	40 mg/l	20 %	Mean · Aarberg
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Aarberg

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

Microbiology (3)

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

Chemical parameters (1)

Chemical parameters – Aarberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	8.1 mg/l	40 mg/l	20 %	Mean · Aarberg

Further parameters (3)

Further parameters – Aarberg
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	70 mg/l	—	—	Mean · Aarberg
Magnesium	8.21 mg/l	—	—	Mean · Aarberg
Total hardness	20.8 °fH	—	—	Mean · Aarberg

Source: https://trinkwasser.ch/de/versorger/706/evolon-ag/2876/aarberg · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 3263

Lyss

Evolon AG

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

Water hardness

12.6 °dH

Hardness range medium

Key values Lyss
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10.55 mg/l	40 mg/l	26 %	Mean · Lyss
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Lyss

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

Microbiology (3)

Microbiology – Lyss
Parameter	Value	Parametric value	Share of the parametric value	Reference
Aerobic mesophilic bacteria	1.5 KBE/ml	300 1/ml	—	Mean · Lyss
Escherichia coli (E. coli)	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Lyss
Intestinal enterococci	nn not detectable Unit not stated in the document	0/100 ml	—	Maximum · Median nn · Lyss

Chemical parameters (1)

Chemical parameters – Lyss
Parameter	Value	Parametric value	Share of the parametric value	Reference
Nitrate	10.55 mg/l	40 mg/l	26 %	Mean · Lyss

Further parameters (3)

Further parameters – Lyss
Parameter	Value	Parametric value	Share of the parametric value	Reference
Calcium	80 mg/l	—	—	Mean · Lyss
Magnesium	6.1 mg/l	—	—	Mean · Lyss
Total hardness	22.5 °fH	—	—	Mean · Lyss

Source: https://trinkwasser.ch/de/versorger/706/evolon-ag/2381/lyss · 2025 · 2025 · retrieved on 07/08/2026

Postcodes in this zone: 3263

Frequently asked questions about drinking water in Büetigen

How hard is the water in Büetigen?: Marktgemeinde Randegg publishes a total hardness of 17.1 °dH for the supply zone 3263, Ortsnetz Perwarth - Bereich WEST (hardness range hard). 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: 2025-11-03, retrieved on 08/08/2026.
How much nitrate is in the drinking water in Büetigen?: Marktgemeinde Randegg publishes a nitrate value of 6,4 mg/l for the supply zone 3263, Ortsnetz Perwarth - Bereich WEST. The statutory parametric value is 50 mg/l; the measured value represents 13 % of the parametric value. Basis: 2025-11-03, retrieved on 08/08/2026.
Who supplies the drinking water in Büetigen?: Marktgemeinde Randegg. The values shown here come from the supply zone 3263, Ortsnetz Perwarth - Bereich WEST 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.