Arsenic violations in Illinois
95 active public water systems in Illinois had a Arsenic violation in the past three years, 6 of them still unresolved. What Arsenic is and why it matters.
Systems with a Arsenic violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ashkum Ashkum · Iroquois County |
800 | 4 | 1 | |
|
Elliott Elliott · Ford County |
269 | 3 | 0 | |
|
Incobrasa West Plant Breakroom Iroquois County |
110 | 1 | 0 | |
|
Nouryon Surface Chemistry LLC Grundy County |
100 | 2 | 0 | |
|
Wolf Ridge Well Corporation Henry County |
95 | 2 | 1 | |
|
Road Ranger 132 Champaign County |
45 | 6 | 2 | |
|
Crest Hill Crest Hill · Will County |
20,223 | 10 | 2 | |
|
Fox Lake Fox Lake · Lake County |
11,780 | 5 | 1 | |
|
Crete Crete · Will County |
8,386 | 4 | 0 | |
|
Fort Massac Pwd Joppa · Massac County |
6,360 | 2 | 0 | |
|
Millstone Pwd Pope County |
5,565 | 5 | 1 | |
|
Monee Monee · Will County |
5,148 | 3 | 1 | |
|
Dwight Dwight · Livingston County |
4,400 | 1 | 0 | |
|
Saline Valley Conservancy District Eldorado · Saline County |
3,921 | 2 | 0 | |
|
Mitchellsville Pwd Saline County |
1,970 | 3 | 0 | |
|
Kaneland High School Kane County |
1,800 | 5 | 0 | |
|
Northwest Bible Baptist Church Kane County |
1,600 | 4 | 0 | |
|
Riverdale School District #100 Rock Island County |
1,340 | 10 | 0 | |
|
Woodlawn Middle/country Meadow Elem Lake County |
1,100 | 5 | 0 | |
|
Olympia School McLean County |
918 | 7 | 0 | |
|
Sheffield Sheffield · Bureau County |
821 | 2 | 0 | |
|
IL American-Bahl Water Company Jo Daviess County |
700 | 7 | 1 | |
|
Snap on Tools McHenry County |
700 | 7 | 0 | |
|
Shops of Kildeer Lake County |
650 | 7 | 2 | |
|
Golconda Golconda · Pope County |
630 | 2 | 0 | |
|
Kildeer Countryside School Lake County |
600 | 5 | 0 | |
|
Gavin Central Elementary Lake County |
560 | 5 | 2 | |
|
Stone Creek School Winnebago County |
543 | 4 | 0 | |
|
Prairie View Elementary School Kane County |
508 | 6 | 1 | |
|
Spring Grove Elementary School McHenry County |
500 | 6 | 0 | |
|
Industry Industry · McDonough County |
475 | 2 | 0 | |
|
Solstice Advanced Materials Us, INC Massac County |
470 | 4 | 0 | |
|
Hinckley-Big Rock Middle School Kane County |
400 | 5 | 0 | |
|
Secor Secor · Woodford County |
351 | 4 | 3 | |
|
Oakwood Twp High School Vermilion County |
350 | 7 | 2 | |
|
Apple River Apple River · Jo Daviess County |
347 | 3 | 0 | |
|
Gavin South School Lake County |
325 | 5 | 2 | |
|
Victory Christian Center McLean County |
325 | 8 | 1 | |
|
Valley View School McHenry County |
300 | 5 | 0 | |
|
Cabery Cabery · Ford County |
266 | 6 | 2 | |
|
North Boone Upper Elementary School Boone County |
262 | 7 | 1 | |
|
Maple Acres MHP Bureau County |
260 | 3 | 0 | |
|
Princeton Christian Academy Bureau County |
250 | 5 | 1 | |
|
Riverview Grade School Woodford County |
240 | 3 | 0 | |
|
Hazelwood Heights Subdivision Henry County |
235 | 3 | 1 | |
|
North Boone Middle School Boone County |
230 | 8 | 2 | |
|
Saint Patrick School Lake County |
225 | 5 | 1 | |
|
Sylvan Lake 1st Subdivision Lake County |
210 | 6 | 0 | |
|
Cortland Corners MHP DeKalb County |
205 | 10 | 3 | |
|
Conagra Vermilion County |
200 | 9 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Arsenic, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Arsenic alone.
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.