Pickaway Co Walnut Heights Subdivision WWTP and Sewers - Circleville, Ohio Advanced Treatment

Pickaway Co Walnut Heights Subdivision WWTP and Sewers is a municipal wastewater treatment facility located in Circleville, Ohio, within the United States. The plant serves a small population of 160 residents and operates with advanced treatment capabilities, ensuring high-quality effluent before discharge. The plant's advanced treatment level exceeds the secondary treatment standard required by the US Clean Water Act for most municipal facilities. With a designed capacity of 238.48 megaliters per year and an actual discharge volume of 113.56 megaliters per year, the plant operates well below its capacity, indicating room for future growth or seasonal variability. The treated effluent is discharged into local waterways that ultimately drain into the Ohio River basin. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region, which is part of the larger Mississippi River watershed.

The plant discharges into tributaries of the Scioto River, which flows into the Ohio River and eventually the Mississippi River. The receiving waters support diverse aquatic life and are important for regional biodiversity. Advanced treatment reduces nutrient loads, helping to mitigate downstream eutrophication in the Gulf of Mexico.