26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
Kalama Wastewater Treatment Plant serves the city of Kalama, Washington, USA. It treats wastewater from approximately 2,515 residents and discharges into the local watershed.
Ephrata S_T Facility is a municipal wastewater treatment plant serving approximately 6,890 people in Ephrata, Washington, United States. It operates under the US Clean Water Act framework.
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.
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.
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.
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.
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.
Bingen POTW serves approximately 2,955 residents in Bingen, Washington. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Benton City S_T FAC is a municipal wastewater treatment plant in Benton City, Washington, serving approximately 3,145 people. It operates under the US Clean Water Act framework with state-level NPDES permitting.
Arlington Treatment serves approximately 17,930 residents in Arlington, Washington. The plant operates under U.S. EPA and Washington state regulations, discharging treated wastewater into the Stillaguamish River watershed.
Zillah Treatment serves approximately 3,000 residents in Zillah, Washington. The plant operates under the US Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Yakima Regional POTW serves over 105,000 people in Yakima, Washington. The plant operates under the US Clean Water Act, treating municipal wastewater before discharge into the Yakima River basin.
Woodland Wastewater Treatment Plant serves approximately 5,550 residents in Woodland, Washington. The facility discharges treated effluent into the local watershed, contributing to the Columbia River basin.
West Richland Sew Trt Fac serves approximately 12,200 people in West Richland, Washington. The plant operates under the U.S. Clean Water Act via NPDES permits, discharging treated wastewater to local waterways.
The City of Westport WW Treatment_Sewer plant serves approximately 2,022 residents in Westport, Washington, USA. It is located near the coast of Grays Harbor County, discharging into the Pacific Ocean watershed.
WENATCHEE POTW serves approximately 32,090 people in Wenatchee, Washington. The plant discharges treated wastewater into the Columbia River basin, supporting local water quality and downstream ecosystems.
Washougal S_T Facility is a municipal wastewater treatment plant serving approximately 14,210 people in Washougal, Washington, USA. It operates under the US Clean Water Act and EPA NPDES permit framework.
WAPATO STP serves Wapato, Washington, treating wastewater for approximately 6,375 residents. The plant operates under the US Clean Water Act, discharging into the Yakima River basin.
Walla Walla STP serves approximately 31,670 residents in Walla Walla, Washington. The plant discharges treated wastewater into the local watershed, ultimately draining to the Columbia River basin.
Marine Park WWTF in Vancouver, Washington serves nearly 50,000 people. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.