Drinking Water Quality and Supply

From source to sink

Where Estevan water comes from

A plain-language tour of the lakes, rivers, or wells that feed Estevan, the plants that clean the water, and how it reaches kitchen taps. Lab grades for hardness, lead, and pH live on the water quality page.

On the map

Where Estevan water lives

Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.

Map showing drinking-water locations for Estevan

Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.

Deep dive for households

Estevan drinking water starts as surface water (rivers, lakes, or reservoirs). The named sources on the utility record are Rafferty Dam Reservoir (primary since 2020), Boundary Dam Reservoir (redundant backup). That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.

Water is cleaned at Estevan Water Treatment Plant (Class 4) before it enters city pipes. Surface plant up to ~14,000 m³/day with filtration, chemical feed, UV. Residuals management ponds (2017) instead of discharging filter wash to Souris River.

After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. Also serves RM of Estevan customers on the system; three potable storage reservoirs.

One detail that makes Estevan water feel local: Switching from Boundary Dam to Rafferty roughly halved hardness and TDS and cut treatment chemical use 60-70%. Lab grades for hardness, lead, and pH sit on the city water quality page; this overview is about the route the water travels.

Where it starts

Surface water

Rivers, lakes, or reservoirs, not underground wells as the main draw.

Research confidence: high

Named source waters

  • Rafferty Dam Reservoir (primary since 2020)
  • Boundary Dam Reservoir (redundant backup)

Treatment plants

These are the buildings that filter and disinfect water before it enters city pipes.

  • Estevan Water Treatment Plant (Class 4)

    Surface plant up to ~14,000 m³/day with filtration, chemical feed, UV. Residuals management ponds (2017) instead of discharging filter wash to Souris River.

How it reaches your street

Also serves RM of Estevan customers on the system; three potable storage reservoirs.

Estevan water quality grades · All city rankings

Source · ECCC / municipal open data (seed). Last updated 2026-07-22. Refreshed on the site's automated schedule.