Hamilton drinking water path

Source

Lake Ontario Mixed supply · +2 sources

raw water

Intake

Raw water intake pump station

to plant

Treatment

Woodward Avenue WTP chlorination · filtration

finished

Mains

Storage & mains Woodward subsystem serves most of urban Hamilton (about 569,000 residents) plus parts of Haldimand and Halton via 22 pumping stations, 10 reservoirs, elevated tanks, and roughly 2,130 km of watermains. Smaller communal well systems and the Fifty Road (Grimsby) subsystem serve limited pockets.

drinking water

Tap

Household tap Hamilton

Source & supply
Lake Ontario
Municipal groundwater wells (Freelton, Greensville and other communal systems)
Town of Grimsby supply (Fifty Road subsystem)
Woodward subsystem serves most of urban Hamilton (about 569,000 residents) plus parts of Haldimand and Halton via 22 pumping stations, 10 reservoirs, elevated tanks, and roughly 2,130 km of watermains. Smaller communal well systems and the Fifty Road (Grimsby) subsystem serve limited pockets.
One Lake Ontario plant carries nearly the entire urban load; Hamilton also keeps a handful of groundwater communal systems in former rural communities.
Treatment
Woodward Avenue Water Treatment Plant
Primary Lake Ontario plant for the Hamilton/Woodward subsystem. Dual intakes about 915–945 m offshore; rated capacity 909,000 m³/day. Clarification, GAC filtration, chloramination, fluoridation, and phosphate corrosion control.
Treatment on record: chlorination · filtration
At the tap
Hardness 104 mg/L (Moderate)
Grade B (Good)
pH 7.7 · lead 0 μg/L
ECCC / municipal open data (seed)