Sunset Water Hardness & Quality Report (2026)

Sunset (a diverse residential neighbourhood in south Vancouver, between Ontario Street and Knight Street south of the Fraser Street corridor) receives its drinking water through the City of Vancouver, purchasing bulk supply from Metro Vancouver (GVWD) — sourced from the protected mountain watersheds of Capilano, Seymour, and Coquitlam reservoirs. Water is treated at the Seymour-Capilano Filtration Plant using ozonation, biofiltration, UV disinfection, and chloramination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness in the Sunset distribution zone is 44.5 mg/L (2.6 gpg) — classified as soft by Health Canada, retaining close to the Metro Vancouver mountain source character in this south Vancouver sub-zone.

Sunset's 44.5 mg/L is modestly elevated above Metro Vancouver's 4–6 mg/L mountain source baseline but remains soft — in contrast with the notably harder inner-Vancouver distribution zones (Kitsilano 82 mg/L, Renfrew-Collingwood 80.5 mg/L). Sunset's south Vancouver location, served through the city's south-end distribution network, appears to receive a supply blend that retains more of the mountain reservoir's soft character, with less elevation of hardness compared to the inner-city west and east corridors.

With 44.5 mg/L of hardness, Sunset homes are largely scale-free — occasional kettle cleaning every three to four months is sufficient. Hot water tanks have an excellent operational lifespan. The mildly corrosive soft water warrants periodic checking of pipe condition in the neighbourhood's many older pre-1960 homes. Sunset is one of Vancouver's most culturally diverse neighbourhoods; the City of Vancouver provides multilingual water quality guidance and annual water reports at vancouver.ca.