It is important to note that water rates will fluctuate, particularly in the summer months, due to increased outdoor water use. Your water supply comes from wells and water purchased from the City of Seattle. Water from both sources is treated with chlorine and fluoride and is tested for quality on a daily basis. Your water has been fluoridated at a rate of one part per million. The sewer collection system transports sewage from your home to a King County Wastewater Treatment facility.
King County is the regional provider for wastewater treatment and disposal.
Maintenance costs for this collection system are paid by a separate sewage treatment charge on your bill. Stormwater The Stormwater Utility division manages natural and constructed storm drainage systems to handle rainwater run-off. The stormwater fees are used to help minimize flooding and erosion and to protect the water quality within the city's delicate natural environment.