2,4-D violations in Illinois
40 active public water systems in Illinois had a 2,4-D violation in the past three years, 10 of them in the latest quarter of EPA's data. What 2,4-D is and why it matters.
Systems with a 2,4-D violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Prospect Heights Plaza Cook County |
1,240 | 6 | 2 | |
|
Vienna Correctional Center Johnson County |
501 | 3 | 0 | |
|
Maranatha Bible Church Cook County |
213 | 3 | 0 | |
|
Mindhaven Academy McHenry County |
100 | 7 | 1 | |
|
Criswell Court MHP Joliet · Will County |
94 | 8 | 3 | |
|
Career Center of Southern Illinois Monroe County |
50 | 9 | 2 | |
|
Gpwd Center Will County |
50 | 4 | 0 | |
|
Walnut Grove MHC Champaign County |
40 | 5 | 0 | |
|
Zutat Feed Solutions Livingston County |
30 | 4 | 0 | |
|
Winnebago Landfill Winnebago County |
25 | 3 | 0 | |
|
Rockford Rockford · Winnebago County |
147,051 | 3 | 0 | |
|
Lockport Lockport · Will County |
23,100 | 4 | 0 | |
|
Pingree Grove Hampshire · Kane County |
10,365 | 4 | 1 | |
|
Manhattan Manhattan · Will County |
10,340 | 1 | 0 | |
|
IL American-Whispering Hills McHenry County |
8,300 | 4 | 0 | |
|
Fountain Water District Valmeyer · Monroe County |
4,350 | 3 | 0 | |
|
South Jacksonville South Jacksonville · Morgan County |
3,501 | 4 | 0 | |
|
Dawson Dawson · Sangamon County |
2,375 | 5 | 1 | |
|
Northwest Bible Baptist Church Kane County |
1,600 | 4 | 0 | |
|
Clifton Clifton · Iroquois County |
1,500 | 1 | 0 | |
|
ST Anne Saint Anne · Kankakee County |
1,200 | 4 | 0 | |
|
Snap on Tools McHenry County |
700 | 7 | 0 | |
|
ST Francisville Saint Francisville · Lawrence County |
583 | 7 | 0 | |
|
Bay View Baptist Church Tazewell County |
425 | 2 | 0 | |
|
Victory Christian Center McLean County |
325 | 8 | 1 | |
|
Bone Gap Bone Gap · Edwards County |
209 | 5 | 1 | |
|
Kishwaukee College DeKalb County |
200 | 5 | 0 | |
|
Country Estates Subdivision Henry County |
188 | 5 | 2 | |
|
South Barrington Partners, LLC Cook County |
121 | 5 | 0 | |
|
Wheatland School Will County |
116 | 6 | 2 | |
|
Loves Travel Stop Ogle County |
80 | 6 | 2 | |
|
Trinity Lutheran School Randolph County |
80 | 9 | 1 | |
|
Chicago Autism Academy Will County |
74 | 6 | 2 | |
|
Ads Valley View Landfill, INC Macon County |
60 | 3 | 0 | |
|
Edp Renewables McLean County |
50 | 4 | 1 | |
|
Tegrant Sonoco Protective Solutions Will County |
50 | 6 | 0 | |
|
Kaluzny Bros INC Will County |
40 | 5 | 2 | |
|
Illinois Marine Towing Will County |
39 | 5 | 2 | |
|
Diversified Cpc Will County |
25 | 6 | 0 | |
|
Wtvo TV Winnebago County |
25 | 5 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved 2,4-D, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not 2,4-D 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.