Water services may be compromised, for example, due to drought or floods. To ensure the functioning of water services in all conditions we need regional cooperation and partnerships, combined networks and emergency water supplies. The State supports both the regional planning of water services and investments in improving the preparedness. A guidebook has been published to improve the preparation for special water supply situations.
Supply networks of water plants cover about 90% and sewage networks about 80% of Finnish households. Water services to other households are managed by means of their own systems, which may be common to several buildings. The municipalities and water supply plants are responsible for water services as required by the Act on Water Services. In other respects the real estate owners are responsible for organising the water services.