Seattle’s municipal water supply undergoes rigorous testing and treatment processes to meet or exceed federal and state drinking water standards. The source of the water is primarily snowmelt from the Cascade Mountains, collected in protected watersheds. This water is then treated to remove impurities and pathogens, ensuring it is fit for consumption.
Maintaining a reliable and potable water source is vital for public health and the city’s infrastructure. Seattle Public Utilities (SPU) regularly monitors water quality throughout the distribution system. Historical data indicates a strong commitment to water quality management, with continuous improvements implemented to address emerging contaminants and maintain public trust in the water supply. The benefits of a safe and readily available water source include reduced risk of waterborne illnesses, support for economic activities, and enhanced quality of life for residents.