Blossom Park Water Hardness & Quality Report (2026)

Blossom Park's drinking water is managed by the City of Ottawa, drawing primarily from the Ottawa River via Ottawa's water treatment plants, with possible blending in the southeast supply network — Blossom Park is an established suburban residential community in southeast Ottawa, adjacent to the Greenbelt south of the Hunt Club Road corridor, a family-oriented neighbourhood of 1970s–1980s detached homes and townhouses in the Gloucester sub-urban district between South Keys and Barrhaven. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 132.5 mg/L (7.7 gpg) — classified as hard by Health Canada, harder than the Ottawa area's standard Ottawa River supply (116–120 mg/L) and closer to the Rideau River sub-zone character (Vanier 181 mg/L, Clarence-Rockland 175.5 mg/L from earlier batches).

Blossom Park's 132.5 mg/L is harder than the standard Ottawa River supply and may reflect distribution blending from both the Ottawa River intakes (producing 116–120 mg/L) and contributions from the Rideau River system or local groundwater in the southeast Ottawa distribution network. The southeast Ottawa corridor sits above the Ordovician and Cambrian limestone of the Ottawa Valley lowlands, which can leach calcium and magnesium minerals into the distribution system or local groundwater wells that supplement the municipal supply in this area.

At 132.5 mg/L, Blossom Park homes experience moderate scale deposits — monthly cleaning of kettles and showerheads is typical. Hot water tanks benefit from periodic inspection. The City of Ottawa provides water quality information at ottawa.ca. Health Canada lead precautionary guidance applies to pre-1975 properties in Blossom Park's established 1970s–1980s housing stock.