Tampere introduced a stormwater fee, which should contribute to municipal expenses for the provision, management and maintenance of the water and sewage system starting in 2019. The municipal costs of the water system are estimated at 5.6 million Euros. Fees will be paid by landowners according to three categories to account for property size and type, as well as surface water quality (e.g. domestic or industrial use). For regular apartments, a price ceiling of €250 applies, and the average fee is €74 per year. Most stormwater management costs should be covered by this income source. It also opens the possibility for the city to finance and built NBS in existing residential areas.