Total Haloacetic Acids (HAA5) violations in Illinois
382 active public water systems in Illinois had a Total Haloacetic Acids (HAA5) violation in the past three years, 48 of them in the latest quarter of EPA's data. What Total Haloacetic Acids (HAA5) is and why it matters.
Systems with a Total Haloacetic Acids (HAA5) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Towanda Towanda · McLean County |
480 | 3 | 2 | |
|
Meadowbrook MH Community, LLC Belleville · St. Clair County |
463 | 4 | 1 | |
|
Dalton City Dalton City · Moultrie County |
454 | 1 | 0 | |
|
Bonnie Bonnie · Jefferson County |
437 | 2 | 0 | |
|
Arenzville Arenzville · Cass County |
419 | 1 | 0 | |
|
Ellis Grove Ellis Grove · Randolph County |
403 | 2 | 0 | |
|
Blm GW Mhp, LLC Bloomington · McLean County |
390 | 6 | 2 | |
|
Forge at the Lake Madison County |
387 | 6 | 0 | |
|
Henderson Henderson · Knox County |
375 | 5 | 3 | |
|
Sunny Hill Estates Subdivision Henry County |
375 | 1 | 0 | |
|
Herrick Herrick · Shelby County |
358 | 4 | 1 | |
|
EJ Water-Dewey Champaign County |
350 | 2 | 1 | |
|
New Piasa Chautauqua PWS Jersey County |
335 | 4 | 2 | |
|
Easton Easton · Mason County |
325 | 2 | 0 | |
|
EJ Water-Coalton Coalton · Montgomery County |
317 | 2 | 0 | |
|
Fsh Water Commission Smithton · St. Clair County |
313 | 2 | 0 | |
|
Lee Lee · Lee County |
313 | 2 | 0 | |
|
Little York Little York · Warren County |
304 | 3 | 0 | |
|
Ilpo Redwood MHP LLC Pontiac · Livingston County |
300 | 1 | 0 | |
|
Loraine Loraine · Adams County |
300 | 5 | 3 | |
|
Northwestern Medicine Woodstock Hospital McHenry County |
300 | 2 | 1 | |
|
Stepan Company Will County |
300 | 5 | 0 | |
|
IL American-Rockvale Ogle County |
298 | 2 | 0 | |
|
Ports Sullivan Lake Owners Association Lake County |
293 | 1 | 0 | |
|
W G Murray Development Center Marion County |
290 | 1 | 0 | |
|
Maplewood Mac LLC Rantoul · Champaign County |
270 | 1 | 0 | |
|
Thawville Thawville · Iroquois County |
270 | 3 | 1 | |
|
Bryant Bryant · Fulton County |
267 | 2 | 0 | |
|
Ildu Lepere Mhp, LLC Dupo · St. Clair County |
250 | 3 | 2 | |
|
Willow Creek North MHP Bloomington · McLean County |
250 | 7 | 0 | |
|
SC Edgewood Terrace Property, LLC Tazewell County |
248 | 2 | 0 | |
|
Sims Sims · Wayne County |
244 | 7 | 0 | |
|
Royal Lakes Royal Lakes · Macoupin County |
235 | 1 | 0 | |
|
Evergreen Wildwood Mobile Home Park Carbondale · Jackson County |
230 | 6 | 1 | |
|
Maquon Maquon · Knox County |
218 | 3 | 0 | |
|
Donnellson Donnellson · Bond County |
216 | 5 | 1 | |
|
Bone Gap Bone Gap · Edwards County |
209 | 5 | 1 | |
|
Ilur Portfolio 5-Surbana Estates MHP LLC Urbana · Champaign County |
209 | 1 | 0 | |
|
Conagra Vermilion County |
200 | 9 | 1 | |
|
Gateway Foundation Lake County |
200 | 7 | 1 | |
|
Mill Point MHP Secor · Woodford County |
200 | 5 | 1 | |
|
Northwest Comm Hosp Outpt Care Lake County |
200 | 8 | 1 | |
|
Versa Press INC Woodford County |
200 | 8 | 1 | |
|
Smithboro Smithboro · Bond County |
188 | 2 | 0 | |
|
Fieldon Fieldon · Jersey County |
186 | 4 | 0 | |
|
Lafayette La Fayette · Stark County |
177 | 5 | 4 | |
|
Hettick Hettick · Macoupin County |
174 | 6 | 3 | |
|
Country View MHC Pierron · Bond County |
173 | 3 | 1 | |
|
Aqua Illinois-Highland Estates Kankakee County |
171 | 1 | 0 | |
|
Quail Run Mobile Home Park Edwardsville · Madison County |
168 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Total Haloacetic Acids (HAA5), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Total Haloacetic Acids (HAA5) 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.