Saanich Water Hardness & Quality Report (2026)

Saanich receives its drinking water through the District of Saanich, which purchases bulk supply from the Capital Regional District (CRD) — sourced from the Sooke Lake Reservoir in the Sooke Hills — and supplements this with local groundwater from Saanich Peninsula Aquifer wellfields. CRD water is treated at the Westshore Water Treatment Facility using UV disinfection, ozonation, and chloramination; local well water receives additional treatment at Saanich's well treatment facilities. All supply meets the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness measures 59 mg/L (3.4 gpg) — classified as soft by Health Canada, substantially higher than Victoria's CRD-only supply (4 mg/L) due to the groundwater blending.

While the CRD's Sooke Hills Wilderness reservoir supply drains over metamorphic and granitic rock of the Wrangellia Terrane — yielding very soft water — the Saanich Peninsula Aquifer draws from Quaternary glaciofluvial sand and gravel deposits overlying the Saanich Peninsula's bedrock. These glaciofluvial sediments contain calcareous material from Cretaceous Nanaimo Group sandstone and limestone clasts, contributing moderate dissolved calcium that elevates the combined supply hardness to 59 mg/L.

With 59 mg/L of hardness, Saanich homes are largely free of major scale issues — light deposits may form on kettle elements and tap aerators over time, but descaling a few times per year is sufficient. Hot water tanks have a good lifespan at this moderate hardness. However, the soft CRD component of supply has mild corrosive potential — Saanich residents in pre-1975 homes with copper or galvanised plumbing should periodically check for corrosion and may benefit from a basic inline pH filter as a precautionary measure.