What's in Caledon's drinking water?
South Caledon, including Bolton, is on Peel's South Peel lake supply, the same Lake Ontario water as Brampton and Mississauga (120 to 130 mg/L). The villages run on four groundwater systems: Palgrave–Caledon East, Caledon Village–Alton, Inglewood and Cheltenham. In 2025, Palgrave measured 240 to 250 mg/L hardness and Caledon East 280 to 360 mg/L. Peel removes iron and manganese with greensand filters at several of these wells, and doesn't add fluoride.
Source: Peel Region, 2025 Palgrave and Caledon East water quality report · Peel Region, water quality reports.
Why reverse osmosis
A reverse osmosis system under the kitchen sink removes chlorine taste, most dissolved solids, sodium, lead and fluoride from drinking and cooking water. In very hard, high-mineral water like parts of Caledon's supply, it's the biggest taste difference you can make.
- Better-tasting water, coffee, tea and ice
- Removes most dissolved solids, sodium and fluoride
- Its own faucet under the sink
- Usually cheaper than bottled water
Compare what you spend now with our bottled water cost calculator.
Reverse osmosis systems for Caledon homes

Standard RO
2, 4 or 5-stage drinking water systems, with a bonus alkaline cartridge on the 5-stage.
See Standard RO
Big Flow RO
Tankless 400 GPD reverse osmosis with a 1:1 waste ratio for bigger households.
See Big Flow ROIn very hard water, a softener in front of the RO system protects the membrane and makes it last longer.
Reverse osmosis nearby
Questions
Is Caledon tap water safe to drink?
Yes. Municipal water is treated and tested under Ontario's drinking water standards. People add RO for taste, minerals, sodium or fluoride.
Does reverse osmosis remove hardness?
At the kitchen tap, yes: RO removes most dissolved minerals. It doesn't treat the rest of the house, which is what a softener is for.
What warranty comes with RO?
Our reverse osmosis systems carry a 3-year warranty, with free installation.
Free in-home water test
Find out what's in your Caledon water
We test your water at your home, show you what's in it, and recommend the system that fits.
- Free
- About 30 minutes
- No obligation
