Rock Island County has no single water story, and the clearest proof sits side by side on the Mississippi. Moline, Rock Island and East Moline each run their own plant on river water, and EPA's treatment record lists a softening objective at Moline's plant but not at Rock Island's or East Moline's. Three neighbouring cities on the same river, two different answers to whether the water is softened before it reaches the house. Away from the river cities, most villages pump their own wells.
Kind Water Co installs water softeners, whole-home carbon filtration and reverse osmosis drinking-water systems across Rock Island County, repairs and maintains equipment already installed — including brands we did not sell — and builds full well systems for the acreages. Installation is carried out by licensed local plumbing professionals we vet, schedule, and stand behind, normally in a single visit.
Because water here is treated so differently from one town to the next, every job starts with a free in-home water test: hardness, iron and total dissolved solids measured at your own kitchen sink, written down, and left with you whether you buy anything or not. The first 50 miles of travel are free, then $1 a mile, quoted before you agree to anything. To start, book the free in-home water test or build an instant quote.
Every town below has its own page. Supplier, source and treatment come from EPA's Safe Drinking Water Information System (SDWIS). The softening column shows whether EPA's treatment record for that system lists a softening objective — it is not a hardness reading, and we are not quoting hardness figures on this page. Each town page covers what its own utility publishes.
| Town | Who supplies the water | Source | Softening on EPA's record | What the record points to |
|---|---|---|---|---|
| Moline | Moline water system, PWSID IL1610450, 44,500 served | Mississippi River | Yes | The only river city here whose plant record lists softening; a reading shows how much hardness remains |
| Rock Island | Rock Island water system, PWSID IL1610650, 39,018 served | Mississippi River | No | River water with no softening objective listed; the Rock Island Arsenal runs a separate system |
| East Moline | East Moline water system, PWSID IL1610250, 21,374 served | Mississippi River | No | Also sells water to Hampton, and is an emergency supply for Silvis |
| Silvis | Silvis water system, PWSID IL1610700, 7,473 served | Purchased surface water | None of its own | Buys its water from Moline through an interconnection |
| Milan | Milan water system, PWSID IL1610400, 4,945 served | Groundwater | No | Its own wells, with iron removal on the record |
| Coal Valley | Coal Valley water system, PWSID IL1614260, 3,873 served | Groundwater | No | Its own wells; the village sits partly outside Rock Island County |
| Carbon Cliff | Carbon Cliff water system, PWSID IL1610100, 2,134 served | Groundwater | No | Its own wells, and an emergency interconnect with Silvis |
| Hampton | Hampton water system, PWSID IL1610300, 1,863 served | Purchased surface water | No | Buys East Moline's water through master meters |
| Port Byron | Port Byron water system, PWSID IL1610550, 1,678 served | Groundwater | No | Its own wells |
| Andalusia | Illinois American Water – Andalusia, PWSID IL1610050, 1,184 served | Groundwater | No | The county's Illinois American Water system |
| Rapids City | Rapids City water system, PWSID IL1610600, 962 served | Groundwater | No | Its own wells |
| Cordova | Cordova water system, PWSID IL1610150, 640 served | Groundwater | No | Its own wells |
| Reynolds | Reynolds water system, PWSID IL1614800, 508 served | Groundwater | No | Its own wells; the village sits partly outside Rock Island County |
| Oak Grove | No village system appears under its name in SDWIS | — | — | Confirm your own supply before anyone sizes equipment |
| Hillsdale | No village system appears under its name in SDWIS | — | — | Confirm your own supply before anyone sizes equipment |
It is easy to assume that neighbouring cities on the Mississippi deliver the same water. They do not have to, because each runs its own treatment plant and chooses its own processes. EPA's treatment record for Moline lists a softening objective alongside filtration, iron removal, corrosion control and disinfection. The records for Rock Island and East Moline list filtration, corrosion control, disinfection and taste and odor control, but no softening. A softening objective on the record does not tell you how hard the water is when it reaches your kitchen; it tells you the plant is set up to reduce hardness, which is exactly why a reading at your own tap is worth more than any assumption.
The purchase relationships matter too. Silvis's primary source is purchased surface water, bought from Moline through an interconnection. Hampton buys East Moline's water through master meters. So a Silvis household and a Hampton household can be drinking water from two different river plants, a few miles apart. The Rock Island Arsenal operates its own separate system, which serves the installation rather than the city.
Eight communities in the county draw groundwater rather than river water: Milan, Coal Valley, Carbon Cliff, Port Byron, Rapids City, Cordova and Reynolds on their own village systems, and Andalusia on an Illinois American Water system. None of their EPA treatment records lists a softening objective, so whatever hardness the wells carry arrives at the tap. Milan's record lists iron removal, which is worth knowing when a softener is being sized, because iron that reaches a softener coats the resin and costs it capacity.
Beyond the towns, the county has dozens of small subdivision and association water systems — SDWIS lists 49 active community systems in Rock Island County in total — and many acreages on private wells with no treatment at all. Oak Grove and Hillsdale do not appear as village water systems in SDWIS; the systems carrying those names there are a mobile home park and private developments, so homes in those villages should confirm how they are actually served. For private well testing, contact the Rock Island County Health Department; we are not printing programme details we have not verified.
Every price is all-in: equipment, installation, taxes and a lifetime parts warranty.
Service is priced the same way: a full diagnostic call is $199, a known-issue trip is $99 plus the part, and annual maintenance is $199 a year for a tank-RO home or $249 for a tankless-RO home. Our water softener repair guide for the Quad Cities covers what to check first. Financing is 0%, and military and first responders take $100 off.
The Iowa side is covered on the Scott County hub, and the Quad Cities hub brings both sides of the metro together. Iowa American Water's published hardness figures describe its Iowa system only, not any Rock Island County town. East of Carbon Cliff and Silvis, Colona is over the county line in Henry County and has its own page.
In a county where the river cities do not even agree on softening, a published description of someone else's system tells you very little about your own tap. We come to your kitchen sink, measure hardness, iron and total dissolved solids, show you the numbers and leave a written quote, with no obligation. Request a quote or get an instant quote, call or text 319-319-6566, or email ryan@kindwaterco.com.
EPA's treatment record for Moline (PWSID IL1610450) lists a softening objective, alongside filtration, iron removal, corrosion control and disinfection. The records for Rock Island and East Moline list no softening objective. A softening objective does not tell you the hardness at your tap, so a reading at your own sink is the way to size anything.
Silvis's primary source is purchased surface water, bought from Moline through an interconnection. Hampton buys its water from East Moline through master meters. So Silvis and Hampton households, a few miles apart, can be drinking water from two different river plants.
Milan, Coal Valley, Carbon Cliff, Port Byron, Rapids City, Cordova and Reynolds run their own groundwater systems, and Andalusia is served by an Illinois American Water groundwater system. None of their EPA treatment records lists a softening objective, so the hardness in the wells reaches the tap.
Yes, across Rock Island County, at the same published all-in prices as everywhere else we work. Installation is carried out by licensed local plumbing professionals we vet, schedule, and stand behind. We repair brands we did not sell: a full diagnostic call is $199, and a known-issue trip is $99 plus the part. Travel is free for the first 50 miles, then $1 a mile, quoted before you agree.
A whole-home softener is $2,500, or $2,850 with reverse osmosis. Reverse osmosis alone is $800 tank or $900 tankless, and a well dual-tank system is $3,450, or $3,800 with a tank RO. Prices are all-in, with equipment, installation, taxes and a lifetime parts warranty. Financing is 0%, with $100 off for military and first responders.
Every number on this page comes from a public record. Here is where to open each one yourself.
Whole-home water softening, filtration, and reverse-osmosis drinking water — professionally installed and built to last a lifetime.
Serving Marion, Cedar Rapids & surrounding Linn County communities
Kind Water Co is a d/b/a of Zero Cap Investments LLC · 2258 Bison St, Apt B, Marion, IA 52302