Greenwood-Coxwell Water Hardness & Quality Report (2026)

Greenwood-Coxwell (an East York neighbourhood along the Leslieville–East York border near Greenwood Avenue and Coxwell Avenue — a lively residential community straddling the East York and Leslieville streetcar corridor, home to small Victorian cottages, post-war bungalows, and a rapidly gentrifying mixed community with independent cafés, music venues, and the historic Greenwood Race Track site on the south Danforth corridor) 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 254.5 mg/L (14.9 gpg) — classified as very hard by Health Canada, with elevated TDS of 668.6 mg/L, consistent with the anomalously higher-hardness east Toronto distribution sub-zone cluster.

Greenwood-Coxwell's 254.5 mg/L is in the same anomalously harder cluster as The Beaches (265.5 mg/L), Flemingdon Park (274.5 mg/L), Pleasant View (250.5 mg/L), and Hillcrest Village (269.5 mg/L) — all sharing the elevated hardness and high TDS characteristic of the R.C. Harris east distribution extremity in Toronto. The 668.6 mg/L TDS (compared to the Toronto average of ~600 mg/L) confirms the specific harder distribution sub-zone character running along the Lake Ontario shoreline east corridor.

At 254.5 mg/L, Greenwood-Coxwell residents face persistent and significant scale challenges — kettle elements and showerhead nozzles require weekly cleaning. Hot water tanks accumulate scale and benefit from biannual inspection. The City of Toronto provides multilingual water quality information at toronto.ca/water. Health Canada lead service line precautionary guidance applies to the neighbourhood's Victorian cottages and bungalows for pre-1955 properties along the Greenwood–Coxwell residential streets.