Clanton Park Water Hardness & Quality Report (2026)

Clanton Park (a North York neighbourhood centred near Wilson Avenue and Bathurst Street — an established post-war residential community of brick bungalows and semi-detached homes in the Wilson Heights corridor, home to a large Jewish-Canadian community with the Bathurst–Wilson-area synagogues, Jewish community centres, and kosher establishments that have made this corridor one of Toronto's most vibrant Jewish cultural districts) receives its drinking water from the City of Toronto, drawing from Lake Ontario via the R.C. Harris Water Treatment Plant. Water is treated using ozonation, biofiltration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) standards. Hardness in this distribution zone is 237.5 mg/L (13.9 gpg) — classified as very hard by Health Canada, with TDS of 603 mg/L, consistent with the North York supply corridor.

Clanton Park receives R.C. Harris plant Lake Ontario supply through the North York distribution network — the same characteristically very hard Lake Ontario source (dissolved Silurian and Devonian carbonate from the Great Lakes basin) as all Toronto boroughs. The 237.5 mg/L is consistent with the adjacent Bathurst Manor (236.5 mg/L) and Lansing-Westgate (234.5 mg/L) in the same North York distribution zone.

At 237.5 mg/L, Clanton Park residents face persistent scale challenges — kettle and showerhead descaling every one to two weeks is typical. The City of Toronto provides water quality information at toronto.ca/water. Health Canada lead service line precautionary guidance is strongly applicable in this neighbourhood's substantial post-war housing stock, and residents in pre-1955 bungalows and semi-detached homes in the established streets should check the City's lead service line replacement programme.