Wastewater plants in Ontario

485 plants indexed. Showing 105 matching current filters.

105 plants matching filters

Harrow Wastewater Lagoons

Harrow, Ontario

Harrow Wastewater Lagoons in Harrow, Ontario, Canada, serves a population of 2,397. The facility is operational and has a designed capacity of 1.00 million liters per day.

Not Reported 2,397 Low

Essex Wastewater Treatment Lagoons North East

Lakeshore, Ontario

Essex Wastewater Treatment Lagoons North East serves approximately 2,500 residents in Lakeshore, Ontario. The facility is operational and uses lagoon-based treatment for municipal wastewater.

Not Reported 2,519 Low

Marathon Wastewater Treatment Plant

Marathon, Ontario

Marathon Wastewater Treatment Plant serves the town of Marathon, Ontario, Canada. It is an operational facility with a designed capacity of 1.00 million liters per day, serving a population of 2,294.

Not Reported 2,294 Low

Parry Sound WWTP

Parry Sound, Ontario

Parry Sound WWTP serves 6,898 people in Ontario, Canada, as an operational municipal facility. The plant discharges into the Parry Sound harbour on Georgian Bay, part of the Great Lakes system.

Not Reported 6,898 Low

Wiarton Wastewater Treatment Lagoon

Georgian Bluffs, Ontario

Wiarton Wastewater Treatment Lagoon serves Georgian Bluffs, Ontario, Canada, treating wastewater for a population of 2,693. The facility is located near the coast of Lake Huron, a major Great Lake.

Not Reported 2,693 Low

Southampton Wastewater Treatment Plant and Collection System

Southampton, Ontario

Southampton Wastewater Treatment Plant and Collection System serves 3,054 residents in Southampton, Ontario, Canada. The plant is operational and located near the coast of Lake Huron.

Not Reported 3,054 Low

Port Elgin Wastewater System

Port Elgin, Ontario

Port Elgin Wastewater System serves 7,292 residents in Saugeen Shores, Ontario. The plant discharges treated effluent into the Lake Huron watershed, supporting local water quality and ecosystem health.

Not Reported 7,292 Low

Meaford Wastewater Treatment Plant

Meaford, Ontario

Meaford Wastewater Treatment Plant serves 5,230 residents in Meaford, Ontario, Canada. The plant is operational and discharges treated effluent into the Georgian Bay watershed.

Not Reported 5,230 Low

Little Current Wastewater Treatment Lagoon

Little Current, Ontario

Little Current Wastewater Treatment Lagoon serves 1,821 residents in Ontario, Canada. The lagoon-based system discharges treated effluent into the North Channel of Lake Huron.

Not Reported 1,821 Low

BWG Wastewater Treatment Plant

Bradford West Gwillimbury, Ontario

BWG Wastewater Treatment Plant serves Bradford West Gwillimbury, Ontario, Canada, treating wastewater for approximately 16,901 residents. The plant is operational and located within 50 km of the coast.

Not Reported 16,901 Low

Wasaga Beach Wastewater Treatment Plant

Wasaga Beach, Ontario

Wasaga Beach Wastewater Treatment Plant serves over 10,000 residents in Ontario, Canada. It is an operational facility located near the shores of Georgian Bay on Lake Huron.

Not Reported 10,628 Medium

Little River Pollution Control Plant 2

Windsor, Ontario

Little River Pollution Control Plant 2 serves approximately 49,000 people in Windsor, Ontario. It is an operational municipal wastewater facility within 50 km of the Great Lakes system.

Not Reported 49,091 Medium

Highland Creek Treatment Plant

Toronto, Ontario

Highland Creek Treatment Plant serves over 380,000 people in Toronto, Ontario, Canada. It is an operational facility located near Lake Ontario, treating municipal wastewater for the Scarborough area.

Not Reported 381,123 Medium

Hagersville WWTP

Hagersville, Ontario

Hagersville WWTP is an operational municipal wastewater treatment plant in Hagersville, Ontario, Canada. It serves a population of 3,519 and has a designed capacity of 1.00 million liters per day.

Not Reported 3,519 Low

Dunnville WWTP

Dunnville, Ontario

Dunnville WWTP is an operational municipal wastewater treatment plant in Dunnville, Ontario, Canada, serving a population of 7,345. It has a designed capacity of 1.00 million liters per day and is located within 50 km of the coast.

Not Reported 7,345 Low

Nipigon WWTP

Nipigon Township, Ontario

Nipigon WWTP serves 1,758 residents in Nipigon Township, Ontario, Canada. The plant is operational and discharges treated wastewater into the Lake Superior watershed.

Not Reported 1,758 Low

Clarkson Wastewater Treatment Plant

Mississauga, Ontario

Clarkson Wastewater Treatment Plant in Mississauga, Ontario, serves approximately 357,000 people. It is a key facility in the Greater Toronto Area, discharging treated effluent into Lake Ontario.

Not Reported 356,906 Medium

GE Booth Wastewater Treatment Plant

Toronto, Ontario

GE Booth Wastewater Treatment Plant in Toronto, Ontario, Canada serves over 1 million people. It is a major facility on Lake Ontario, operating under Canadian federal and provincial regulations.

Not Reported 1,014,817 Medium

Trenton Wastewater Treatment Plant

Quinte West, Ontario

Trenton Wastewater Treatment Plant serves Quinte West, Ontario, Canada, treating wastewater for approximately 20,811 residents. The plant is operational and located within 50 km of the coast.

Not Reported 20,811 Low

Wastewater Treatment Centre

Orillia, Ontario

The Wastewater Treatment Centre in Orillia, Ontario, serves approximately 29,000 people. It is an operational facility located near Lake Simcoe, a key water body in the region.

Not Reported 29,008 Low

Frequently asked

How many wastewater treatment plants are in Ontario?

UtilityRadar indexes 485 wastewater treatment plants in Ontario, with treatment level, capacity, operator and discharge data on each record.

Who operates wastewater treatment in Ontario?

Among the plants on this page, the most-referenced operator is Toronto Water (City of Toronto). UtilityRadar's records show 2 plants linked to this operator.

What is the largest wastewater treatment plant in Ontario?

Among the indexed plants, Harrow Wastewater Lagoons has the highest designed capacity at 1 m3/day.

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