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Water Rates and Charges
Understanding Your Water Bill
Water and wastewater charges are billed by Oakville Hydro on behalf of Halton Region; who set the water and wastewater rates. Your total bill is made up of:
- A monthly service charge based on meter size
- A consumption charge based on 100% of water consumption
The Halton Region Water & Wastewater Rates for 2026 were approved and take effect on January 1, 2026. These rates include a combined increase of 6% over 2025 rates. To view Halton Region’s 2026 Rate Card, click here.
Combined water and wastewater rates (effective January 1, 2026)
Fixed service charge based on water meter size*
| Meter Size | Residential | Commercial/Industrial/Institutional |
| 20 mm or less | $40.67 | $40.67 |
| 25 mm | $70.85 | $131.67 |
| 40 mm | $125.98 | $216.20 |
| 50 mm | $293.45 | $472.93 |
| 75 mm | $534.39 | $843.09 |
| 100 mm | $925.41 | $1,441.53 |
| 150 mm | $2,274.41 | $3,663.02 |
| 200 mm | $3,823.44 | $5,884.75 |
| 250 mm | $4,706.73 | $7,352.26 |
Usage charges per cubic metre
(1 m3 = 1,000 litres)
| Cubic Meters (m3) | Residential | Commercial/Industrial/Institutional |
| Per Cubic Meter | $3.3441 | $3.3441 |