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Water Treatment Plants and Tours

Halton Region maintains 12 water treatment facilities, 3 surface water plants and 9 groundwater facilities, to deliver clean drinking water to the region. Learn more about our plants and booking a plant tour.

Halton Region owns 12 water treatment plants. These plants provide 65,758,000 cubic metres of clean drinking water each year. That's equal to 72 Olympic-sized swimming pools every day!

Locate our water treatment plants, pumping stations, reservoirs and municipal wells on the map:

Water Treatment Plant Tours

Water treatment plant tours can be arranged by contacting the supervisor of the facility you'd like to see. Tour participants should wear casual clothing and comfortable enclosed shoes or boots.

Note: Some Halton Region water treatment facilities do not offer tours.

The Wastewater Treatment Process

Your wastewater travels through miles of sewer to arrive at one of Halton's Wastewater Treatment Plants (WWTPs). Wastewater arrives at the plant and goes through a pretreatment phase and all of the solid waste is removed. These solids are turned into "Biosolids". Biosolids are a clean, safe, and viable organic product (in liquid or solid cake form), rich in nutrients, that are beneficially reused by the agricultural community for healthy crop production. The water is then treated with aerobic bacteria, whose job is to eat the remaining "suspended solids" (small particles that weren't filtered out of the water). This process lasts for 12 days. Disinfection is the final part of the treatment process. Halton uses ultraviolet radiation to disinfect the water because it doesn't have a negative impact on the environment like chemicals.