LOTT Budd Inlet Treatment Plant, Olympia, Washington | Wastewater Treatment Facility

The LOTT Budd Inlet Treatment Plant is a key wastewater facility serving Olympia, Washington, and surrounding areas in Thurston County. It handles a population equivalent of approximately 62,444 residents, making it a medium-to-large agglomeration under US regulatory frameworks. The plant is operated by the LOTT Clean Water Alliance, a partnership of local governments. As a US facility, the plant operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets discharge limits to protect water quality. Plants of this scale typically employ secondary treatment as a minimum, with potential advanced treatment for nutrient removal to protect sensitive marine waters. The plant's treated effluent is discharged into Budd Inlet, an arm of the southern Puget Sound. Puget Sound is a major estuary and ecologically significant water body that supports diverse marine life, including salmon, orcas, and shellfish. The plant's operations are critical to maintaining water quality in this sensitive marine environment, which faces challenges from urban runoff and population growth.

The plant discharges into Budd Inlet, which flows into the southern Puget Sound, a large estuary connected to the Pacific Ocean via the Strait of Juan de Fuca. Puget Sound is a critical habitat for salmon, steelhead, and marine mammals, and its health is closely tied to wastewater treatment quality. The region experiences a maritime climate with high rainfall, making stormwater management and combined sewer overflows a concern.