Tara Sewage Lagoon - Wastewater Treatment in Arran–Elderslie, Ontario

Tara Sewage Lagoon is a municipal wastewater treatment facility located in the hamlet of Tara, within the municipality of Arran-Elderslie in Bruce County, Ontario, Canada. The plant serves a small population of about 1,487 people, typical of rural lagoon systems in the region. As a sewage lagoon, the plant relies on natural biological processes for treatment, which is common for small communities in Ontario. The facility has a designed capacity of 1.00 million litres per day. Under Ontario's regulatory framework, such plants are subject to the Ontario Water Resources Act and Environmental Protection Act, with permits issued by the Ministry of the Environment, Conservation and Parks. The treated effluent from the lagoon is discharged into local waterways that ultimately drain into Lake Huron, one of the Great Lakes. The facility plays a key role in protecting the downstream aquatic environment, including the Lake Huron shoreline and its diverse fish habitats, by reducing nutrient and pathogen loads.

Tara Sewage Lagoon discharges into a local watercourse that flows into the Saugeen River, which empties into Lake Huron at Southampton. Lake Huron supports a rich ecosystem, including lake trout, walleye, and whitefish, and is an important source of drinking water. The plant's operation helps protect water quality in this sensitive Great Lakes watershed.