Drinking Water Quality and Supply

Estevan tap water: Grade B, hardness 143 mg/L

By OpenStats · Built from official Canadian sources

Regional estimate
B

Water quality grade

Good

Graded against Health Canada drinking water guidelines

Lead within guidelinepH in range
Hardness vs provincial average143 mg/L · prov. avg 178 mg/L
Lead vs provincial average0.7 μg/L · prov. avg 0.5 μg/L
Hardness
143 mg/L
Lead
0.7 μg/L
≤ 5 μg/L
pH
7.1
6.5–8.5 range
Hardness
143 mg/L
Hard
Lead
0.7 μg/L
Max: 5 μg/L
pH
7.1
6.5–8.5
Chlorine
1.2 mg/L
Max: 4 mg/L
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Reading this page

Estevan's drinking water earns Grade B (Good). Hardness is 143 mg/L (hard), and pH is 7.1 against Health Canada's 6.5–8.5 guideline.

Lead at 0.7 μg/L is below the 5 μg/L maximum, and fluoride is 0.5 mg/L against a guideline of ≤ 1.5 mg/L.

How to use this page: read the headline metric and provincial comparison first, then supply and treatment notes, then the source footer for the underlying dataset.

Watershed to tap

Supply and treatment

How Estevan draws, treats, and distributes drinking water, from municipal and utility publications. Chemistry grades above come from separate parameter records; this section does not invent plant lab figures.

Source type

Surface water

Research confidence: high

Source waters

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

Treatment plants

  • 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.

Distribution

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

Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target.

Health parameters meet Health Canada limits; turbidity exceeds the typical 1 NTU aesthetic target.

Figure 1 · Supply chain

From watershed to tap

Compared to provincial average

Saskatchewan · 16 cities in sample

Hardness (city vs Saskatchewan avg)143 mg/L
pH (city vs Saskatchewan avg)7.1
Lead (city vs Saskatchewan avg)0.7 μg/L
Fluoride (city vs Saskatchewan avg)0.5 mg/L

Provincial average: hardness 178 mg/L · pH 7.4 · lead 0.5 μg/L · fluoride 0.6 mg/L

Full parameters

ParameterReadingHealth Canada guidelineStatus
Hardness143 mg/LNo health limit (aesthetic)Compliant
pH7.16.5–8.5Compliant
Lead0.7 μg/L≤ 5 μg/LCompliant
Fluoride0.5 mg/L≤ 1.5 mg/LCompliant
Chlorine (free)1.2 mg/L≤ 4 mg/LCompliant
Turbidity2.4 NTU≤ 1 NTU (typical target)Exceeds guideline
Alberta water licences

WaterRegister.ca

On a private well or holding an Alberta water allocation licence? Water Register maps EPA licence records, transfer comparables, and watershed context across the province.

Explore WaterRegister.ca →

OpenStats pick

OpenStats picks for Estevan — chlorine + hardness

Estevan pairs 143 mg/L hardness with 1.2 mg/L chlorine — taste and scale show up together. Elite carbon for drinking, shower filter for chlorine, strips so you know when you need a softener.

As an Amazon Associate, OpenStats earns from qualifying purchases.

· Compare options

  • Brita 10-cup Elite pitcher
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  • Frizzlife SW20 under-sink filter
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  • Brita Elite replacement filters
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  • VARIFY hardness test strips
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Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.