Water Softener & Water Treatment in Coralville, IA

Kind Water Co installs water softeners and reverse osmosis drinking-water systems in Coralville, Iowa. Per the city's water page, Coralville tap water is drawn from three aquifer layers — about half from the Jordan Aquifer roughly 1,600 feet down — and while the plant filters out iron and manganese, its treatment process doesn't include a softening step.

Coralville water at a glance

The Coralville water story

Coralville pulls from three different aquifers at once. Per the city's Consumer Confidence Report, those are the Jordan (Cambrian-Ordovician), the Silurian, and the Pleistocene — and per the city's water page, about half of your tap water starts roughly 1,600 feet underground in the Jordan, another 30% or so comes from the Silurian around 500 feet down, and the remainder comes from shallow wells near 100 feet.

At the treatment plant, the city does real work on that water: per the city's water page, it's aerated, flows by gravity through filters that remove iron and manganese, and is then chlorinated and stored. That's genuinely good news — the orange staining that plagues untreated well water isn't a typical Coralville complaint, and the city deserves credit for it. The city's 2025 Consumer Confidence Report lists no violations, either.

Here's the part that surprises people: there's no softening step in that process, and the city doesn't publish a hardness number in its water page or its annual reports. So Coralville homes receive unsoftened deep-well groundwater, pretty much as the limestone delivers it. For scale, the USGS calls water over 121 mg/L hard and over 180 mg/L very hard; at 17.1 mg/L per grain, that 121 mg/L line works out to about 7 grains per gallon. And right next door, Iowa City softens its water at the plant — from about 17.5 grains per gallon raw down to roughly 3 at the tap, per its Water Division. Same corner of Johnson County, very different water day-to-day.

If you're seeing spotted glassware, crusty white scale on faucets and showerheads, soap and shampoo that never quite lather, or your skin feels tight after a shower, that's what unsoftened water looks like around the house. The same chalky film builds up quietly inside water heaters, dishwashers and coffee makers, which is usually what pushes people to do something about it. A softener is the fix — NSF/ANSI 44 is the industry standard those systems are built to. You can see where your neighborhood stacks up on our Iowa water hardness by city guide, and a free in-home test tells you your exact number in about 20 minutes.

One more everyday note: chlorination is what keeps water safe on its trip through the pipes, but some households notice the taste. A small reverse osmosis system at the kitchen sink polishes drinking and cooking water without touching the rest of the house. Curious what else is in the city's reports? Coralville publishes its Consumer Confidence Reports online every year, and we've summarized the highlights in our Coralville water report.

What we install in Coralville

Every price below is all-in — equipment, professional installation, taxes, and a lifetime parts warranty. No surprise line items.

• Water softener — $2,500. The workhorse fix for scale, spots, and dry skin on city water.
• Softener + reverse osmosis — $2,850. Our most popular Coralville setup: soft water everywhere, polished drinking water at the sink.
• XL softener — $2,800 (or $3,150 with RO). Sized for bigger households and higher water use.
• Salt-free conditioner — $3,050. A no-salt, no-drain option for city water homes, and a good fit where there's no floor drain nearby.
• Reverse osmosis drinking water — $800 tank / $900 tankless. Standalone under-sink systems. NSF/ANSI 58, the RO standard, calls for at least 75% total dissolved solids reduction.

0% financing is available, and military and first responders get $100 off any system. Want a number without a visit? Grab an instant quote.

On a private well near Coralville?

Plenty of homes in rural Johnson County — just past the city limits — run on private wells, and well water is its own project. Nobody treats it at a plant first, so whatever the aquifer hands you is what comes out of the tap. The Iowa DNR recommends testing private wells every year, and through the Iowa Private Well Grants program, that testing is free through your county lab. Start with our guide to free well water testing in Iowa.

For treatment, our well dual-tank system runs $3,450 all-in ($3,800 with a tank RO for drinking water), UV disinfection is $700, and sediment filtration is $500. Iron and sulfur systems are quoted after your free water test, because the right fix depends entirely on what the test finds.

Why Coralville homeowners choose Kind Water Co

We're a family-owned Iowa company, founded in 2021 by Ryan Brunton and headquartered up the road in Marion. Every install is done by licensed local plumbing professionals we vet, schedule, and stand behind — and every system carries a lifetime parts warranty, 5-year media warranty, and 1-year labor warranty. We're insured and bonded, we offer 0% financing, and our optional $199/year care plan keeps your system dialed in so you never have to think about it.

Get your free in-home water test

The honest starting point is knowing your actual numbers — hardness, iron, chlorine, total dissolved solids. We'll test your water at your kitchen sink, walk you through the results in plain English, and give you a straight recommendation, even if that recommendation is "you're fine." It takes about 20 minutes and there's no charge and no obligation. Call or text 319-319-6566 or email ryan@kindwaterco.com to schedule your free test.

Also serving nearby: we work all over the Corridor, including Iowa City, North Liberty, Tiffin, University Heights, and Solon.