Saskatchewan

Regina water hardness

Regina's 2025 drinking water quality report shows a total hardness of 203 mg/L in the distribution system, from the City's comprehensive annual sample. That puts Regina in the very hard range. The City's backup wells, about 0.7% of supply in 2025, are much harder at 649 mg/L.

Data last reviewed October 17, 2026.

City of Regina distribution system

203 mg/L as CaCO₃ Very hard
  • Annual sample

In other units

US grains per gallon
11.9
Imperial grains per gallon
14.2
German degrees (°dH)
11.4
Millimoles per litre
2.03

Source: City of Regina, 2025 Drinking Water Quality Report (PDF). Data for: 2025, comprehensive annual sample. Checked October 13, 2026.

What this means for your appliances

Very hard

Scale builds fast. Descale your coffee maker and ice machine often, and clean the dishwasher and the washer about every two weeks.

Recommended for your water

Coffee Maker Cleaner

4.8(14)

Removes limescale, mineral buildup and coffee oils inside your coffee maker.

Descales for better-tasting coffee

$24.95

Ice Machine Cleaner

4.9(13)

Removes mineral buildup and odours inside your ice machine.

Descales and freshens countertop ice makers

$24.95

Dishwasher Cleaner

5.0(15)

Dissolves grease, detergent residue and limescale buildup, and removes odour-causing buildup.

Clears grease, limescale and odour buildup

$23.95

Washing Machine Cleaner

4.9(14)

Breaks down residue and odour-causing buildup inside your washer.

Removes odour and buildup from the drum and hoses

$24.95

Guides for hard water

What counts as hard water?

We use the U.S. Geological Survey scale, in mg/L as CaCO₃.

  • Soft 0 to 60 mg/L
  • Moderately hard 61 to 120 mg/L
  • Hard 121 to 180 mg/L
  • Very hard Over 180 mg/L

How to read the units

Utilities usually report hardness in mg/L as calcium carbonate (CaCO₃), which is the same as ppm. Dishwasher and softener manuals often use grains per gallon or German degrees instead. Here is how they convert:

  • 1 US grain per gallon = 17.1 mg/L
  • 1 imperial grain per gallon = 14.25 mg/L
  • 1 °dH = 17.85 mg/L
  • 1 mmol/L = 100.09 mg/L

Questions and answers

Is Regina water hard?

Yes, very hard. The City of Regina's 2025 report shows 203 mg/L in the distribution system, above the 180 mg/L line for very hard water.

What is Regina's water hardness in grains per gallon?

City of Regina distribution system: 11.9 grains per US gallon, or 14.2 grains per imperial gallon.

Where do these numbers come from?

City of Regina, 2025 Drinking Water Quality Report (PDF). Data for 2025, comprehensive annual sample. We update this page when a new report comes out.

Sources

Check another city