248 plants indexed. Showing 184 matching current filters.
Birch Bay STP serves 5,500 people in Cottonwood Beach, Washington. The plant operates under the US Clean Water Act NPDES permitting program for municipal wastewater treatment.
Buckley WWTF serves approximately 4,345 residents in Buckley, Washington. The plant operates under U.S. EPA and Washington state regulations for municipal wastewater treatment.
Burlington Treatment serves 9,074 people in Burlington, Washington. The plant operates under the US Clean Water Act NPDES permit program, discharging treated wastewater into the Skagit River basin.
Camas Wastewater Treatment Plant serves approximately 19,620 residents in Camas, Washington. The facility discharges treated effluent into the Columbia River, supporting downstream water quality in the Pacific Northwest.
Carnation Treatment is a municipal wastewater facility serving 1,780 people in Carnation, Washington. It operates under U.S. EPA and Washington State regulations, discharging treated effluent to the Snoqualmie River basin.
Cashmere STP Facility serves 3,075 people in Cashmere, Washington. The plant discharges treated wastewater into the Wenatchee River watershed, which flows to the Columbia River.
Castle Rock WWTP serves 2,130 people in Castle Rock, Washington. The plant operates under the US Clean Water Act, with NPDES permits regulating its discharge.
CENTRALIA STP serves 17,140 people in Lewis County, Washington. The plant operates under the US Clean Water Act and NPDES permit program.
CHEHALIS STP serves approximately 9,591 people in Chehalis, Washington. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Chelan City of POTW serves 3,627 people in Chelan Falls, Washington. The plant operates under the US Clean Water Act, with NPDES permits regulating its discharge.
Cheney S_T Facility is a municipal wastewater treatment plant serving Cheney, Washington, USA. It serves a population of approximately 10,790 and operates under the US Clean Water Act framework.
Chewelah S_T Facility is a municipal wastewater treatment plant serving approximately 2,610 residents in Chewelah, Washington, United States. It operates under the US Clean Water Act framework.
Clarkston STP serves approximately 7,200 residents in Clarkston, Washington. The plant discharges into the Snake River system, a major tributary of the Columbia River.
Cle Elum S_T Facility is a municipal wastewater treatment plant serving Cle Elum, Washington, USA. It treats wastewater from a population of approximately 4,168 under the US Clean Water Act.
COLFAX STP is a municipal wastewater treatment plant serving approximately 2,845 residents in Colfax, Washington, United States. It operates under the U.S. Clean Water Act and EPA NPDES permitting framework.
College Place WWTP serves approximately 8,780 people in Walla Walla County, Washington. The plant operates under the US Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
COLVILLE SEW LAGOON is a municipal wastewater treatment plant serving Colville, Washington. It treats wastewater for approximately 5,116 residents and discharges into the local watershed.
Connell STP is a municipal wastewater treatment plant serving approximately 5,150 people in Connell, Washington. The facility operates under the U.S. Clean Water Act framework, with state-issued NPDES permits governing its discharge.
Cowlitz Water Pollution Control Plant in Longview, Washington serves approximately 39,877 people. The facility operates under the U.S. Clean Water Act, discharging treated wastewater into the Columbia River system.
DAYTON STP serves Dayton, Washington, treating wastewater for approximately 3,068 residents. The plant operates under U.S. EPA and Washington state regulations, discharging into the local watershed.