Silvis changed where its water comes from. The city’s 2023 water quality report named ground water as its source; the 2024 and 2025 reports name purchased surface water, delivered from the City of Moline through the Moline Interconnection. On the federal record, five Silvis wells and the treatment plant that blended their raw water under a radionuclide objective were recorded as abandoned or inactive in 2023, while four shallower wells stayed on the books as active sources. So a Silvis tap now sits on two supplies: Mississippi River water that Moline softens as one of its treatment steps, and city well water with no softening on its record.
We install water softeners, whole-home filtration and reverse osmosis drinking-water systems for Silvis homes. We also repair and maintain equipment that is already in your basement, including brands we did not sell, and for acreages outside the city mains we build complete well systems. Every installation is handled by licensed local plumbing professionals we vet, schedule, and stand behind.
Because Silvis does not publish a hardness number, the first step is a free in-home water test. We run it at your kitchen sink and measure hardness, iron and total dissolved solids, so the system is sized to your water rather than to a guess. Travel is free for the first 50 miles and $1 a mile after that, and we quote it before you agree to anything. To start, book the free in-home water test or get an instant quote online.
| Silvis at a glance | What the record shows |
|---|---|
| Who supplies the water | City of Silvis, PWSID IL1610700, serving 7,473 people through 2,800 connections per EPA SDWIS (Census Vintage 2024 population: 8,003) |
| Where it comes from | Mississippi River surface water bought from the City of Moline (IL1610450) through the Moline Interconnection, plus city Wells 4, 5, 7 and 8, drilled 442 to 480 feet into shallow bedrock |
| Softened at the plant? | Partly. Moline lists softening among the 12 processes it uses; the Silvis well treatment in SDWIS is aeration, chlorination, fluoridation and sequestration, with no softening |
| Published hardness | None published. The Silvis 2025 water quality report, including the Moline pages bound into it, prints no hardness figure |
EPA’s Safe Drinking Water Information System (SDWIS) lists Wells 6, 11, 12 and 14 and the Glendale well as abandoned, with deactivation dates between March and August 2023. The plant that served them, “TP 03”, went inactive on August 23, 2023; its treatment entries were aeration, hypochlorination, an orthophosphate corrosion inhibitor and raw-water blending filed under the radionuclide-removal objective. The Illinois EPA source water fact sheet puts those five wells at 570 to 1,371 feet, with four of them described as deep bedrock (Well 14, at 585 feet, has no aquifer listed).
What stayed: Wells 4, 5, 7 and 8, all shallow bedrock between 442 and 480 feet, treated at “TP 01” with slat-tray aeration, gaseous chlorination, fluoridation and sequestration. Well 3, a 1,680-foot deep bedrock well, is kept as an emergency source; the same fact sheet records chloride in Well 3 at 500 and 506 ppm in 1983 and 1986 samples, which Illinois EPA attributes to natural mineralization in the aquifer. The most recent radionuclide results printed in the 2025 report are combined radium at 3.8 pCi/L and gross alpha at 5.2 pCi/L, both sampled February 23, 2021, against limits of 5 and 15.
Illinois EPA’s Drinking Water Watch lists four water purchase connections for Silvis. The Moline Interconnection is the regular one. The other three are recorded as emergency interconnections: East Moline (IL1610250), Carbon Cliff (IL1610100) and Silvis Heights Water Corp (IL1615750). The Moline section of the 2025 report describes a Mississippi River plant using 12 processes, from screening and clarification to softening, recarbonation, filtration, UV disinfection and fluoridation, and lists chloramines as its disinfectant at 3 to 3.6 ppm.
One more thing that trips up neighbors: Silvis Heights Water Corp is not the City of Silvis. SDWIS records it as a separate, privately owned groundwater system serving 1,450 people through 495 connections, and the Illinois EPA fact sheet lists its two wells at 554 and 555 feet in deep bedrock. It has its own federal system ID and its own compliance record. If your water bill comes from Silvis Heights, the city report described on this page is not your water.
Since 2018, SDWIS shows no maximum contaminant level violation for Silvis. The entries are monitoring, reporting and notice violations, plus one service line inventory entry, and the category is what tells you what happened:
Silvis homes are on city water, so every system below is available, including the salt-free conditioner, which is for city water only. Every price is all-in: equipment, installation, taxes and a lifetime parts warranty.
Maintenance plans are $199 a year for a tank-RO home and $249 a year for a tankless-RO home. A diagnostic service call is $199; a known-issue trip is $99 plus the part. Financing is 0%, and military and first responders get $100 off. Our reverse osmosis systems are certified to NSF/ANSI 58 for total dissolved solids only; they are not certified for nitrate, PFAS, lead or radium. More on water softeners, reverse osmosis drinking water and reverse osmosis in the Quad Cities.
Beyond the city mains, a private well is not covered by the public water rules above, so testing is up to the owner. The Rock Island County Health Department offers water sampling and inspections for existing and new water supplies; its water testing runs Monday through Wednesday, with test types and prices on its fee schedule, and it can be reached at (309) 793-1955. Our free in-home test does not check for bacteria, nitrate, arsenic, lead or PFAS, which need a certified lab. For well homes we install the dual-tank system, and UV is a supplemental NSF/ANSI 55 Class B unit for water that has already tested safe, never the fix for a contaminated well. See well water treatment.
Whether your tap is fed by the Moline connection, the city wells or Silvis Heights, the number that matters is the one at your sink. Book the free in-home water test and we will measure hardness, iron and total dissolved solids with you, then quote a system or tell you that you do not need one. Want numbers first? Try the instant quote.
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Yes. We repair and maintain existing softeners and filters, including brands we did not sell. A diagnostic service call is $199, or $99 plus the part when the problem is already known. If a replacement makes more sense, installation is handled by licensed local plumbing professionals we vet, schedule, and stand behind.
The Silvis 2024 and 2025 water quality reports list purchased surface water from the City of Moline, through the Moline Interconnection, as the source, and they also list city Wells 4, 5, 7 and 8 as active. The 2023 report listed ground water. EPA SDWIS shows five deeper city wells recorded as abandoned in 2023.
No hardness figure is published. The Silvis 2025 report, including the Moline pages in it, does not print one, and we will not borrow a neighboring town's number. Moline lists softening among its treatment processes, but the city wells have no softening on their record, so the free in-home test at your sink is the reliable answer.
No. EPA SDWIS records Silvis Heights Water Corp (IL1615750) as a separate, privately owned groundwater system serving 1,450 people, and the Illinois EPA fact sheet lists its two wells at 554 and 555 feet. It has its own system ID and its own compliance record. The city system is IL1610700.
Since 2018, EPA SDWIS lists no maximum contaminant level violation for Silvis. It lists monitoring, reporting and public notice violations, including missed combined radium and gross alpha sampling for 2023 to 2025 and lead and copper tap sampling, plus a service line inventory violation filed under the treatment technique category. A missed test is not a high result.
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.
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