Dutton Sewage Treatment Plant - Secondary Treatment Facility Serving Dutton/Dunwich, Ontario

Dutton Sewage Treatment Plant is a municipal facility located in Dutton/Dunwich, Elgin County, Southwestern Ontario, Canada. It serves a small population of 739 people, reflecting the rural character of the community. The plant is situated near the northern shore of Lake Erie, one of the Great Lakes. The plant provides secondary treatment, which is the standard biological treatment process for removing organic matter and suspended solids. Under the Canada Water Act and provincial Ontario regulations, small wastewater systems like this are required to meet effluent quality standards that protect receiving waters. The plant's discharge volume is 332.00 cubic meters per day, indicating a modest scale consistent with the population served. The treated effluent from the plant ultimately reaches Lake Erie, a major freshwater resource that supports drinking water, recreation, and a diverse aquatic ecosystem. Lake Erie is the shallowest of the Great Lakes and is particularly sensitive to nutrient pollution, which can cause algal blooms. The plant's secondary treatment helps reduce nutrient loads, though additional nutrient removal may be needed in the future to address lake-wide eutrophication concerns.

The plant discharges into a watershed that drains to Lake Erie, the fourth-largest of the Great Lakes by volume. Lake Erie's western and central basins are ecologically sensitive due to nutrient enrichment from agricultural and urban runoff, leading to harmful algal blooms. The plant's location within 10 km of the coast means its effluent enters the lake's nearshore zone, which is critical for fish spawning and migratory birds. Downstream, Lake Erie flows via the Niagara River into Lake Ontario and eventually the St. Lawrence River to the Atlantic Ocean.