Reclaimed water is wastewater that gets treated to such a high level that it can be used safely and effectively for non-drinking water uses such as landscape and agricultural irrigation, heating and cooling, and industrial processing. Reclaimed water is available year-round, even during dry summer months or when drought conditions can strain other water resources.
The City's 3.0 mgd treatment plant includes mechanically cleaned bar screens, vortex grit removal, secondary treatment by a modified Bardenpho process for advanced nutrient removal, traveling hood effluent sand filtration, and ultraviolet disinfection. Sludge disposal is by wastage to existing facultative stabilization ponds. Effluent disposal is based on discharging secondary effluent to a new Snoqualmie River outfall in the winter, and Eagle Lake for golf course irrigation in the summer. All water sent to Eagle Lake meets Class A Reclaim Water Standards.