Estevan Water Hardness & Quality Report (2026)

The City of Estevan Water Utility draws its supply from two main sources to serve its approximately 11,000 residents. The primary source is surface water from the Souris River, which is processed at the Estevan Water Treatment Plant. This is supplemented by groundwater from wells that tap into local glacial aquifers situated near the city. Residents can find detailed monthly reports on the Saskatchewan SaskH2O portal, with annual summaries like the 2024 Drinking Water Quality Report available on the City of Estevan website.

The Souris River watershed traverses the prairie landscape, flowing over glacial till plains and through Cretaceous bedrock formations within the Williston Basin. Locally, the groundwater wells access aquifers composed of glacial gravel and sand layers. These deposits sit atop Mannville Formation shales and limestones, which are rich in minerals. As water percolates through these geological layers and prairie soils, it dissolves significant amounts of calcium and magnesium, leading to a hard water supply. Evaporative concentration further contributes to the mineral content, giving the water its distinct character.

Homeowners in Estevan often notice the effects of this moderately hard water, with limescale buildup being a common issue. This buildup can reduce the efficiency of water heaters by as much as 20-30% and leave unsightly spots on dishes and glassware. Appliances like kettles, coffee makers, and washing machines are particularly susceptible to the effects of scale. You might also find that soap doesn't lather as easily and requires more detergent for cleaning. To combat these problems and extend the lifespan of your appliances, regular descaling with vinegar, using scale inhibitors, or installing a water softener are highly recommended. The total hardness is reported at 230 mg/L CaCO3, with calcium at 56 mg/L, and the water's pH typically ranges between 7.5 and 8.5.