Seafair Water Hardness & Quality Report (2026)

Seafair's drinking water is managed by the City of Richmond, purchasing bulk supply from Metro Vancouver (GVWD) — sourced from the protected Capilano, Seymour, and Coquitlam mountain watersheds. 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 Seafair distribution sub-zone is 86 mg/L (5.0 gpg) — classified as moderately hard by Health Canada, notably harder than other Richmond sub-zones (Blundell 44.5 mg/L, Steveston 53 mg/L), reflecting a distinct distribution characteristic in the southwest Richmond corridor.

Seafair (a residential neighbourhood in southwest Richmond near the Steveston area and the Terra Nova Rural Park, with predominantly single-family homes in the agricultural-rural–residential transition zone at the western edge of Richmond) shows a significantly harder supply than the north Richmond Blundell area (44.5 mg/L). The 86 mg/L may reflect the specific transmission routing through the southwest Richmond distribution pressure zone, which serves a large geographic area at the far end of the Metro Vancouver distribution network in west Richmond, where pipeline mineral accumulation and distribution blending characteristics produce a harder sub-zone measurement. This is similar to the variation observed across Metro Vancouver north shore sub-zones.

At 86 mg/L, Seafair homes experience light to moderate scale deposits — cleaning every two months is advisable. Hot water tanks have a reliable operational lifespan. The City of Richmond provides water quality information at richmond.ca. Health Canada lead precautionary guidance applies to older pre-1975 residential properties in the established Seafair residential area.