Cudworth Water Is Very Hard — Here's What It Costs You Each Year

Why Is Cudworth Water So Hard?

Cudworth gets its water from the South Saskatchewan River, treated and delivered through the SaskWater Wakaw-Humboldt Regional Water Supply System. That’s surface water, not groundwater, and it’s a big part of why your taps run at 11.23 GPG (192 ppm), which puts Cudworth firmly in the “very hard” tier.

Here’s the whole story. The South Saskatchewan River starts up in the Rocky Mountains of Alberta and flows east across the prairies before it ever reaches Saskatchewan. Rain and snowmelt hammer those mountain slopes, and the water picks up dissolved minerals as it runs. But the real hardness kicker isn’t the mountains. It’s the prairie itself. The river cuts through the Great Plains, and that terrain is loaded with ancient marine sediment, shale, and limestone deposits left behind by inland seas that covered this region millions of years ago. Those formations are rich in calcium and magnesium compounds. As the river water churns through and over this material, it dissolves those minerals right into solution. By the time the South Saskatchewan River reaches the SaskWater treatment intake, it’s carrying a heavy load of dissolved calcium and magnesium carbonates.

That’s why Cudworth’s water tests at 11.23 GPG. The treatment process at the Wakaw-Humboldt system removes suspended solids and pathogens, but hardness is dissolved, not suspended. You can’t filter it out with standard treatment. It stays in the water all the way to your tap. So when you see scale building on your kettle element or soap scum on your shower door, you’re not imagining it. That’s the South Saskatchewan River’s dissolved mineral load, left behind as the water evaporates or heats up.

The USGS classifies anything above 7 GPG as hard and above 10.5 GPG as very hard. Cudworth sits at 11.23 GPG, so you’re about 54% harder than the US national average of roughly 7.3 GPG. And it’s worth noting the EPA doesn’t regulate hardness as a health hazard. It’s purely an aesthetic and nuisance issue, covered under Secondary Maximum Contaminant Levels. Nobody’s saying the water is unsafe. It’s just tough on your plumbing and appliances.

How Cudworth Compares to Nearby Cities

Cudworth is part of the SaskWater Wakaw-Humboldt Regional Water Supply System, and that matters for how it stacks up against its neighbors. If you live in Cudworth, you’re drinking from the same regional system that serves other communities in the area. That means the hardness profile you’re dealing with is essentially shared across the region, because it all comes from the same South Saskatchewan River source, treated through the same infrastructure.

That’s the key thing to understand about comparisons here. Water hardness isn’t something each town invents on its own. It follows the source. So nearby communities that draw from the South Saskatchewan River through the Wakaw-Humboldt system are going to see similar hardness numbers, give or take a little depending on seasonal river flow and treatment adjustments. The river’s mineral load fluctuates through the year, especially during spring runoff when snowmelt flushes more dissolved solids downstream, but the baseline hardness stays in that same elevated range.

The communities that would genuinely differ are the ones pulling from different sources entirely. Towns in this part of Saskatchewan that rely on groundwater wells, for instance, can swing wildly in hardness depending on which aquifer they tap. Some glacial aquifers in the region produce softer water, while others hit even harder readings than the river. But if a nearby town is on the same SaskWater regional pipeline, you can reasonably expect their water to behave a lot like yours.

Fair enough, that’s not a dramatic comparison. But it’s the honest one. Cudworth’s water is what it is because of the South Saskatchewan River and the prairie geology it flows through. Your neighbors on the same system are dealing with the same mineral load, the same scale buildup, and the same need for a water softener if they want to protect their water heater and cut down on detergent use. According to the WQA and Battelle’s 2010 detergent study, soft water can cut laundry detergent use by up to 50% and dish soap by up to 70%. And the DOE notes that just a quarter inch of scale can knock up to 40% off your water heater’s efficiency. At 11.23 GPG, you’re firmly in the territory where those costs add up.

How does Cudworth stack up against the rest of Saskatchewan? It's very hard at 11.23 GPG — White City, Edenwold, and Emerald Park sit nearby with different numbers. See the full hardest-water ranking for context.

See where Cudworth sits on the Saskatchewan water hardness map →

Want the broader explainer on what hardness actually is and how it behaves? Read hard water vs. soft water, explained.