Tapcensus

Illinois

Rock Island County drinking water quality

119 active public water systems serve 162,223 people in Rock Island County. 64 are compliant, 55 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 5 carry a health flag.

Active systems 119 49 community systems
People served 162K by public water systems
Systems with violations 55 46% of active systems, past 3 years
Serious violators 1 5 systems carry a health flag

Needs attention

Silvis Heights Water Corp IL1615750 · Community water system · Serves 1,450 7 rules violated in the past three years. Unresolved: Lead and Copper Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
IL American-Andalusia IL1610050 · Andalusia · Community water system · Serves 1,184 1 rule violated in the past three years. Unresolved: Lead and Copper Rule.
Cedar Brook Estates Subdivision IL1615170 · Community water system · Serves 450 3 rules violated in the past three years. Unresolved: Lead and Copper Rule and Consumer Confidence Rule.
Quad City Hitmen Sports Complex IL3158295 · Transient non-community system · Serves 300 2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.
Blanchard Island Pua IL3004648 · Transient non-community system · Serves 50 2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.

Community water systems

49 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Moline
Moline 		44,500 2 0
Rock Island
Rock Island 		39,018 3 1
East Moline
East Moline 		21,374 1 0
Rock Island Arsenal, US Army
 7,800 2 0
Silvis
Silvis 		7,473 7 1
Milan
Milan 		4,945 3 1
Coal Valley
Coal Valley 		3,873 3 0
Carbon Cliff
Carbon Cliff 		2,134 4 0
Hampton
Hampton 		1,863 1 1
Port Byron
Port Byron 		1,668 4 4
Silvis Heights Water Corp
 1,450 7 3
IL American-Andalusia
Andalusia 		1,184 1 1
Rapids City
Cordova 		962 3 1
Clover Leaf Village MHP
 732 3 0
Cordova
Cordova 		640 3 0
High Cliff Estates
Milan 		560 2 0
Reynolds
Reynolds 		508 0 0
Mississippi Manufactured Home Community
East Moline 		503 4 0
East Moline Correctional Center
East Moline 		500 0 0
Croppers 1st 4th and 5th Addition
 495 1 0
Woodland a and B MHP
 490 3 0
Cedar Brook Estates Subdivision
 450 3 2
Edgington Water District
 391 0 0
Falcon Farms
 350 1 0
Ilcv Candle Mhp, LLC
Coal Valley 		340 4 1
Ridgewood Ledges Water Association
 300 0 0
Air View MHP
 200 3 1
Paradise Manor MHP
 200 3 0
Hillsdale Estates, LLC
 163 3 0
East Lawn Water Association
 160 0 0
Coyne Center Coop
 150 0 0
Indian Bluffs Subdivision
 138 1 1
Oak Grove MHP Rock Island County
 138 3 1
Winding Creek Estates
 120 3 0
Whispering Hills MHP
 100 1 0
Eberts 3rd Addition
 99 4 2
Rainbow Ridge
 91 1 1
Tower Ridge Subdivision
 77 2 2
Suburban Heights Subdivision
 75 0 0
Hillcrest Court 2nd Addition
 66 0 0
Cherrydale Subdivision
 63 0 0
Hillcrest Court Subdivision
 60 0 0
Hillsdale Properties
 60 0 0
Evergreen Village Subdivision
 56 1 1
Chigakwa Park Estates
 53 4 1
East End Water Association
 48 0 0
Tennants Shady Oaks Subdivision
Milan 		44 0 0
Water Werks
 43 1 1
Hickory Hills 2nd Addition
 35 0 0
Non-community systems (70: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Niabi Zoo
 5,000 1 1
Riverdale School District #100
 1,340 10 0
Constellation Energy Generation LLC
 950 0 0
Mississippi Rapids Rest Area
 930 0 0
Hillsdale Express Lane
 900 0 0
Sherrard Jr/sr High School
 800 4 1
Wildwood Baptist Church
 440 0 0
Greater Quad City Auto Auction
 340 6 1
Snowstar INC
 320 0 0
3m Chemical Operations LLC
 300 2 0
Quad City Hitmen Sports Complex
 300 2 2
Faith Walk World Outreach/cntr
 200 0 0
Golfmohr Golf Course
 200 0 0
Illinois City Untd Methodist Church
 200 0 0
Taylor Ridge Elementary School
 162 3 0
Duckys Lagoon
 150 0 0
Illinois City Elementary Schoo
 136 2 0
Beulah Presbyterian Church
 120 0 0
Zion Lutheran Church (48587)
 120 0 0
Ann's Helping Hands
 100 0 0
Bennys Pizza
 100 0 0
Indian Bluff Forest Preserve
 100 0 0
Jims Knoxville Tap
 100 1 0
Ol' Midway Bar & Grill
 100 0 0
Rock Island Conservation Club
 100 2 1
Zion Lutheran Church (49155)
 96 0 0
Byron Hills Golf Course
 80 0 0
Buffalo Prairie Presbyterian
 75 0 0
Hollars
 75 0 0
Illiniwek Ball Field Well
 75 0 0
Messiah Lutheran Church (124149)
 75 0 0
North Shore Inn
 75 0 0
Prime Steakhouse
 75 0 0
Sycamore Baptist Church
 75 0 0
Bethel Baptist Church (108423)
 60 0 0
Lifes Little Miracles
 60 0 0
Blanchard Island Pua
 50 2 2
Bsa-Loud Thunder Upper
 50 2 1
Camp Hauberg (85795) South Well
 50 0 0
Camp Hauberg (85803) North Well
 50 1 0
Choppers Bar & Grill
 50 0 0
Hill & Dell #1
 50 0 0
Hillsdale American Legion
 50 0 0
Loud Thunder Riverview Well
 50 1 1
Loud Thunder White Oak Well
 50 1 1
Pinnacle Country Club Upper
 50 0 0
Tpc Deere Run Back Nine Restroom Shelter
 50 0 0
Reasons Prairie Creek Market and Deli
 46 0 0
RI County Council on Addiction
 30 0 0
Loud Thunder East Side Well
 26 0 0
Heritage Natural Foods INC
 25 0 0
Hidden Lake Campground
 25 1 0
HY Vee Food Store (149237)
 25 0 0
Hy-Vee Food Store (126946)
 25 0 0
Hy-Vee Food Store (140160)
 25 0 0
Hy-Vee Food Store Vend Machine
 25 0 0
Illiniwek Forest Office Well
 25 2 1
Jewel Food Store (126896)
 25 0 0
Jewel Food Store (127050)
 25 0 0
Jewel Food Store (127068)
 25 0 0
Loud Thunder Maintenance Building
 25 0 0
Loud Thunder Office Well
 25 0 0
Q C Mart
 25 1 0
Sun Retreats Rock River
 25 1 0
Supermercado Monarca (152454)
 25 0 0
Teskes Pet and Garden Center
 25 0 0
Tpc Deere Run at Midway Grill
 25 0 0
Two Rivers United Methodist CH Camp
 25 2 1
Walmart Food Store Silvis
 25 0 0
Walmart Foods Water Vending
 25 0 0
Inactive systems (319, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.