Woodland Wastewater Treatment Plant | Woodland, Washington Municipal Facility

The Woodland Wastewater Treatment Plant is a municipal facility located on Sandalwood Road in Woodland, Cowlitz County, Washington. Serving a population of about 5,550, it manages wastewater from this small community in the Pacific Northwest region of the United States. As a US-based plant serving fewer than 10,000 people, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. The facility is expected to provide secondary treatment as a minimum standard, consistent with EPA regulations for municipal wastewater treatment plants of this scale. The plant's treated effluent is discharged into a local waterway that ultimately drains into the Columbia River, one of the largest river systems in North America. This river supports diverse aquatic life and provides critical habitat for salmon and other migratory fish species in the Pacific Northwest.

The plant discharges into a tributary of the Columbia River, which flows into the Pacific Ocean. The Columbia River basin supports a rich ecosystem including salmon runs, steelhead trout, and various wildlife. The plant's operations are important for protecting water quality in this ecologically sensitive river system, particularly for downstream communities and aquatic habitats.