Water and sewerage
Water supply in Oslo- excellent water quality!
Norway has more water than most other countries and its quality is very good. The raw water used in Oslo comes from snow or rain precipitation fields in the forests and hills around Oslo. A network of streams and waterways fills up the water reservoirs we need in order to supply the population of Oslo. We have placed restrictions on usage of the areas surrounding our sources of drinking water in order to prevent the quality of raw water from being exposed to human activities like swimming, fishing, boating, taking a break/picnicking any closer than 50 metres from lakes, streams and rivers or camping (overnight) on hillsides nearby.
The excellent quality of inflow water, the size of the lakes and the slow rate of flow ensure high-quality raw water even before it arrives at the treatment plant.
Excellent monitoring for safe and clean water quality because the Norwegian Drinking Water Regulations specify that drinking water should also be clear and without any prominent smell, taste or colour. It should not contain any physical, chemical or biological components that could be harmful to health. Water should comply with more than 50 quality criteria.
Oslo Water and Sewerage Works has procedures relating to daily, weekly, monthly, quarterly and half-yearly sampling and analysis. We check the quality of water in our intake lakes, in our treatment plants and at the homes of consumers.
The Norwegian Food Safety Authority is the supervisory authority for the Water and Sewerage Works.
More information about water and sewerage in Oslo can be found in this information brochure and on the websites of the Water and Sewerage works.
Oslo kommune
Rådhuset
0037 Oslo
Rådhuset
0037 Oslo
Ansvarlig redaktør: Informasjonssjef Erik Hansen
Redaktør: Fagsjef Bente M. D. Bastiansen
Redaktør: Fagsjef Bente M. D. Bastiansen
Én kommune -
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