Deckerville STP - Secondary Wastewater Treatment in Wheatland Township, Michigan

Deckerville STP is a municipal wastewater treatment facility located in Wheatland Township, Sanilac County, Michigan, United States. The plant serves a small population of 903 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for municipal plants of this scale. The plant's design capacity is 454.25 volume units, with an average daily discharge volume of 302.83, indicating it operates below its designed capacity. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting typical effluent quality standards for inland discharge. The treated wastewater is discharged to a local water body, likely a tributary of the Lake Huron basin, given the plant's location in eastern Michigan. The plant's discharge contributes to the regional water cycle and supports downstream aquatic habitats, with regulatory oversight under the National Pollutant Discharge Elimination System (NPDES) permit program.

The plant discharges into a local waterway that drains into Lake Huron, one of the Great Lakes. This watershed supports diverse aquatic life and provides drinking water for millions. The plant's secondary treatment helps protect the lake from nutrient pollution and pathogens, maintaining water quality for recreation and ecosystem health.