Uxbridge Water Hardness & Quality Report (2026)

Uxbridge's drinking water is managed by the Township of Uxbridge, drawing from Lake Ontario via the Durham Region water supply transmission system — one of Durham Region's northernmost communities to receive treated Lake Ontario supply through the regional pipeline infrastructure. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 210.5 mg/L (12.3 gpg) — classified as very hard by Health Canada, consistent with the Durham Region Lake Ontario supply corridor (Whitby 213 mg/L from batch 3, Brooklin 203 mg/L from batch 15), reflecting eastern Lake Ontario's characteristic hardness delivered through the York–Durham regional infrastructure.

Uxbridge (a historic Township community 40 km north of Whitby at the edge of the Oak Ridges Moraine — known as the 'Trail Capital of Canada' for its extensive wilderness trail network through the Uxbridge-Scott corridor and home to the Uxbridge Bruins and a strong horse country equestrian culture) receives Lake Ontario supply through the Durham Region transmission system that extends northward into the moraine communities. The 210.5 mg/L is consistent with eastern Lake Ontario's moderate-hardness band — harder than Ottawa River supply (116–118 mg/L) but softer than western Lake Ontario (230–240 mg/L Toronto).

At 210.5 mg/L, Uxbridge homeowners face regular scale challenges — kettle and showerhead descaling every three to four weeks is typical. Hot water tanks benefit from annual inspection and flushing. Durham Region provides water quality information at durham.ca/water. Uxbridge's semi-rural character brings many acreage residents also using private wells — those on private systems should conduct their own testing independently of the municipal supply.