Sardis Water Hardness & Quality Report (2026)

The City of Chilliwack is the municipal utility responsible for providing drinking water to Sardis, British Columbia. The community's entire water supply originates from the Sardis-Vedder Aquifer, a groundwater source located beneath the Vedder River floodplain. Unlike many municipalities, Sardis does not draw from surface water bodies, nor does it have dedicated treatment plants for its supply; instead, raw water is pumped directly from wells. The treatment process is minimal, primarily involving disinfection through chlorination to ensure safety. This system serves the Sardis district, home to roughly 10,000 residents within Chilliwack.

The Sardis-Vedder Aquifer is situated within the Fraser Valley watershed. Its geological makeup consists of Quaternary-age glacial-fluvial deposits, predominantly sand and gravel, situated above Tertiary sedimentary rocks. Importantly, these formations lack significant carbonate content, such as limestone or dolomite. This geology limits the dissolution of hardness-causing minerals like calcium and magnesium into the groundwater. Recharge for this unconfined aquifer comes from local rainfall and infiltration from nearby rivers, contributing to its naturally soft water characteristics.

Homeowners in Sardis will notice the benefits of this naturally soft water. You won't find significant scale buildup on faucets, inside pipes, or within appliances like water heaters and dishwashers, which often suffer from hard water damage. Soap lathers easily, requiring less product, and cleaning tasks are simpler, free from the mineral spots that can mar glassware. Because the water is already soft, installing a water softener isn't necessary and would likely be redundant. The utility focuses on corrosion control to prevent potential issues with metal solubility in low-mineral water, rather than descaling, and regularly tests to meet all drinking water guidelines.