Oslo Water and Sewerage Works is a municipally-run utility responsible for the supply and treatment of drinking water and sewage to residents, businesses, and visitors in the municipalities of Oslo and Ski. All activity is financed through water-and-wastewater collection fees.
Overall vision
Pure, clean water for all purposes.
Vision of health
The supply of drinking water, treatment of wastewater, and management water resources must be done in such a way as to promote the health and welfare of all residents and visitors.
Vision for sustainability and environment
The infrastructure associated with water supply and wastewater collection must be handed over to the next generation in better condition than it was when it was handed to us. Water supply and wastewater services must be carried out in such a way that it does not harm the environment.
Vision for customer satisfaction
Water supply and wastewater collection and treatment must be carried out in such a way that the recipients of these services are satisfied and trust the municipality as the supplier of water and wastewater services.
Key figures:
- 557,000 people served in Oslo and Ski
- Yearly water production 92 - 94 million cubic meters to Oslo & 3 million cubic meters to Ski
- Water mains 1550 km
- Sewerage mains 1456 km
- Employees 420+
Leaks from sewerage and water mains are calculated as a part of the daily domestic water budget for all residential users. Each domestic user is allotted a maximum of 200 litres per day. Total domestic water consumption:
Personal hygiene: 40 litres
Toilet: 30
Laundry: 25
Household: 20
Food preparation: 8
Car washing/garden: 7
Total: 130 – 200* *System leaks: water 22%, sewerage 2%
Information about Oslo Water and Sewarage Works in english. (pdf)
