Reverse osmosis in Whitby

Whitby's water comes from Lake Ontario, treated at the Whitby Water Supply Plant and the Oshawa plant. Both feed one connected system that also serves Brooklin, Oshawa, Ajax, Pickering and Courtice.

• Chlorine: free chlorine in the distribution system ranged 0.48 to 2.75 mg/L in 2025. That's what keeps the water safe in the pipes, and what most people taste.
• Fluoride: added (0.12 to 1.54 mg/L at the Whitby plant in 2025). If you'd rather drink unfluoridated water, reverse osmosis removes most of it.
• Sodium: 13.9 to 20.6 mg/L.
• Lead: 76 plumbing samples ranged from non-detect to 0.0024 mg/L in 2025, well under the 0.01 mg/L limit.

Source: Region of Durham, Oshawa/Whitby/Ajax Drinking Water System 2025 Annual Report.

A reverse osmosis system under your kitchen sink removes chlorine taste, most dissolved solids, lead, fluoride and sodium from drinking and cooking water. It's bottled-quality water from its own faucet, without carrying cases home.

• Better-tasting water, coffee, tea and ice
• Removes most dissolved solids, lead and fluoride
• Fits under the sink with its own faucet
• Usually costs less than buying bottled water

Spending on bottled water? Our bottled water cost calculator shows your yearly cost.