Dalapon violations in Illinois
51 active public water systems in Illinois had a Dalapon violation in the past three years, 11 of them in the latest quarter of EPA's data. What Dalapon is and why it matters.
Systems with a Dalapon 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 | |
|
Kane County Div of Transport Kane County |
40 | 4 | 1 | |
|
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 | |
|
Elgin Elgin · Kane County |
114,797 | 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 | |
|
Good Shepherd Hospital Lake County |
1,290 | 8 | 2 | |
|
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 | |
|
Spring Grove Elementary School McHenry County |
500 | 6 | 0 | |
|
Bay View Baptist Church Tazewell County |
425 | 2 | 0 | |
|
Newport School Lake County |
350 | 5 | 2 | |
|
Victory Christian Center McLean County |
325 | 8 | 1 | |
|
Bone Gap Bone Gap · Edwards County |
209 | 5 | 1 | |
|
Kishwaukee College DeKalb County |
200 | 5 | 0 | |
|
Northwest Comm Hosp Outpt Care Lake County |
200 | 8 | 1 | |
|
Country Estates Subdivision Henry County |
188 | 5 | 2 | |
|
First Student #12903 Will County |
160 | 7 | 2 | |
|
South Barrington Partners, LLC Cook County |
121 | 5 | 0 | |
|
Wheatland School Will County |
116 | 6 | 2 | |
|
Imtt Illinois LLC Lemont Cook County |
110 | 6 | 2 | |
|
Sauber Mfg CO Super Shop Kane County |
84 | 2 | 0 | |
|
Loves Travel Stop Ogle County |
80 | 6 | 2 | |
|
Montessori Academy Glen Ellyn DuPage County |
80 | 4 | 0 | |
|
Trinity Lutheran School Randolph County |
80 | 9 | 1 | |
|
Ads Valley View Landfill, INC Macon County |
60 | 3 | 0 | |
|
Aqua Plaza Will County |
50 | 6 | 1 | |
|
Tegrant Sonoco Protective Solutions Will County |
50 | 6 | 0 | |
|
Will CO Forest Preserve Dist Will County |
50 | 6 | 2 | |
|
Kaluzny Bros INC Will County |
40 | 5 | 2 | |
|
Illinois Marine Towing Will County |
39 | 5 | 2 | |
|
Peoples Gas Champaign County |
38 | 1 | 0 | |
|
Diversified Cpc Will County |
25 | 6 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Dalapon, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Dalapon 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.