Lake Erie Wastewater Treatment Plant, Crescent Bay, Ontario

The Lake Erie wastewater treatment plant is located on New Lakeshore Road in Crescent Bay, Haldimand County, Ontario, Canada. It serves a small population of 233 residents and operates under secondary treatment, a standard level for communities of this size in the region. As a secondary treatment facility, the plant reduces organic matter and suspended solids before discharge. In Canada, such plants are regulated under provincial and federal guidelines, including the Canada Water Act and Ontario's Clean Water Act, which set effluent standards to protect receiving waters. The plant discharges treated wastewater into the Lake Erie watershed, a vital freshwater resource and part of the Great Lakes system. The lake supports diverse aquatic life and provides drinking water for millions. The plant's coastal location (within 10 km of the lake) underscores the importance of effective treatment to prevent nutrient loading and algal blooms.

Treated effluent from the plant enters the Lake Erie basin, which drains through the Niagara River into Lake Ontario and eventually the St. Lawrence River to the Atlantic Ocean. Lake Erie is the shallowest of the Great Lakes and is particularly sensitive to nutrient pollution, which can fuel harmful algal blooms. The plant's secondary treatment helps reduce phosphorus and nitrogen loads, supporting the lake's ecological health.