County · Illinois
Rock Island County, Illinois: drinking water records
Explore EPA records for 49 community water systems across 17 ZIP codes in Rock Island County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 8 of the 49 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 49 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Silvis IL1610700 | 7,473 | 60 | 0 | 1 | 1.7 ppbbelow the action level |
| Moline IL1610450 | 44,500 | 120 | 1 | 0 | 4 ppbbelow the action level |
| Rock Island IL1610650 | 39,018 | 120 | 1 | 0 | 5.6 ppbbelow the action level |
| East Moline IL1610250 | 21,374 | 120 | 2 | 0 | 10 ppbbelow the action level |
| Rock Island Arsenal, Us Army IL1615387 | 7,800 | 120 | 2 | 0 | 0 ppbbelow the action level |
| Milan IL1610400 | 4,945 | 120 | 0 | 0 | 7.2 ppbbelow the action level |
| Coal Valley IL1614260 | 3,873 | 180 | 0 | 0 | 8.3 ppbbelow the action level |
| Carbon Cliff IL1610100 | 2,134 | 0 | 0 | 4 | 3.3 ppbbelow the action level |
| Silvis Heights Water Corp IL1615750 | 1,450 | 0 | 0 | 4 | 0 ppbbelow the action level |
| Il American-Andalusia IL1610050 | 1,184 | 60 | 0 | 0 | 3 ppbbelow the action level |
| Cordova IL1610150 | 640 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Mississippi Manufactured Home Community IL1610350 | 503 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Woodland a and B MHP IL1617925 | 490 | 0 | 0 | 1 | 2.6 ppbbelow the action level |
| Air View MHP IL1615185 | 200 | 0 | 0 | 1 | 1 ppbbelow the action level |
| Ilcv Candle MHP, LLC IL1610120 | 148 | 0 | 0 | 2 | 9.6 ppbbelow the action level |
| Hampton IL1610300 | 1,863 | 0 | 0 | 0 | 1.3 ppbbelow the action level |
| Port Byron IL1610550 | 1,678 | 0 | 0 | 0 | 4.7 ppbbelow the action level |
| Rapids City IL1610600 | 962 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Clover Leaf Village MHP IL1610160 | 732 | 0 | 0 | 0 | 1.1 ppbbelow the action level |
| Reynolds IL1614800 | 508 | 0 | 0 | 0 | 2.1 ppbbelow the action level |
| Croppers 1st 4th and 5th Addition IL1615250 | 495 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| Cedar Brook Estates Subdivision IL1615170 | 450 | 0 | 0 | 0 | 0 ppbbelow the action level |
| High Cliff Estates IL1610410 | 448 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Edgington Water District IL1615550 | 391 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Falcon Farms IL1617635 | 350 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Ridgewood Ledges Water Association IL1615670 | 300 | 0 | 0 | 0 | 3.6 ppbbelow the action level |
| Paradise Manor MHP IL1617665 | 200 | 0 | 0 | 0 | 3.9 ppbbelow the action level |
| Hillsdale Estates, LLC IL1615530 | 163 | 0 | 0 | 0 | 0 ppbbelow the action level |
| East Lawn Water Association IL1615100 | 160 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Coyne Center Coop IL1615150 | 150 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Indian Bluffs Subdivision IL1615520 | 138 | 0 | 0 | 0 | 1.4 ppbbelow the action level |
| Oak Grove MHP - Rock Island County IL1617785 | 138 | 0 | 0 | 0 | 12 ppbbelow the action level |
| Winding Creek Estates IL1615850 | 120 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Whispering Hills MHP IL1610170 | 100 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Eberts 3rd Addition IL1615330 | 99 | 0 | 0 | 0 | 2.6 ppbbelow the action level |
| Rainbow Ridge IL1615580 | 91 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Tower Ridge Subdivision IL1615780 | 77 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Suburban Heights Subdivision IL1615800 | 75 | 0 | 0 | 0 | 1.4 ppbbelow the action level |
| Hillcrest Court 2nd Addition IL1615490 | 66 | 0 | 0 | 0 | 6.1 ppbbelow the action level |
| Cherrydale Subdivision IL1615120 | 63 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hillcrest Court Subdivision IL1615510 | 60 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Hillsdale Properties IL1615728 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Evergreen Village Subdivision IL1615310 | 56 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Chigakwa Park Estates IL1615140 | 53 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| East End Water Association IL1610140 | 48 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Tennants Shady Oaks Subdivision IL1615540 | 44 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Water Werks IL1615130 | 43 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Hickory Hills 2nd Addition IL1615450 | 35 | 0 | 0 | 0 | 3 ppbbelow the action level |
| East Moline Correctional Center IL1617120 | 500 | 0 | 0 | 0 | not reported |
USGS · Monitoring stations
The water, more recently.
Available station readings in Rock Island County, Illinois. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Rock Island County
17ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Andalusia
- Barstow
- Buffalo Prairie
- Carbon Cliff
- Coal Valley
- Cordova
- East Moline
- Hampton
- Illinois City
- Joslin
- Milan
- Moline
- Port Byron
- Rapids City
- Rock Island
- Silvis
- Taylor Ridge
View ZIP areas and understand coverage
- 61201Rock Island
- 61232Andalusia
- 61236Barstow
- 61237Buffalo Prairie
- 61239Carbon Cliff
- 61240Coal Valley
- 61242Cordova
- 61244East Moline
- 61256Hampton
- 61257Joslin
- 61259Illinois City
- 61264Milan
- 61265Moline
- 61275Port Byron
- 61278Rapids City
- 61282Silvis
- 61284Taylor Ridge
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.