All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Marianos Palatine Cook County |
25 | 0 | 0 | |
|
Marianos S Ashland Ave Cook County |
25 | 0 | 0 | |
|
Marianos W Lawrence Chicago Cook County |
25 | 0 | 0 | |
|
Marianos Westchester Cook County |
25 | 0 | 0 | |
|
Marinos Catering Will County |
25 | 1 | 0 | |
|
Market on the Hill Coop Logan County |
25 | 0 | 0 | |
|
Marley Oaks Assisted Living Will County |
25 | 1 | 0 | |
|
Marshall CO Sportsmens Club (118760) Marshall County |
25 | 0 | 0 | |
|
Marshall CO Sportsmens Club (6940) Marshall County |
25 | 2 | 0 | |
|
Martin Iga Newton Jasper County |
25 | 0 | 0 | |
|
Martin's Camping Ground Will County |
25 | 4 | 1 | |
|
Martins Iga Effingham Effingham County |
25 | 0 | 0 | |
|
Matthiessen State Park (52886) LaSalle County |
25 | 0 | 0 | |
|
Mayfield Congregational Church DeKalb County |
25 | 0 | 0 | |
|
McCd Brookdale Conservation Area McHenry County |
25 | 0 | 0 | |
|
McCd Exner Marsh-Lakewood McHenry County |
25 | 0 | 0 | |
|
McCd Exner Marsh-Miller RD McHenry County |
25 | 0 | 0 | |
|
McCd Fox Bluff Conservation Area McHenry County |
25 | 0 | 0 | |
|
McCd Glacier Park Horse Lot McHenry County |
25 | 1 | 0 | |
|
McCd Pleasant Valley Conservation Area McHenry County |
25 | 1 | 1 | |
|
McCd/prairieview Education Cen McHenry County |
25 | 0 | 0 | |
|
McCullom Lake Plaza McHenry County |
25 | 0 | 0 | |
|
McHenry County Conservation McHenry County |
25 | 0 | 0 | |
|
McHenry Moose Lodge 691 McHenry County |
25 | 0 | 0 | |
|
McHenry Township Food Pantry McHenry County |
25 | 0 | 0 | |
|
McKinley Woods Will County |
25 | 0 | 0 | |
|
Meadow Lane School Livingston County |
25 | 3 | 0 | |
|
Meadowlark Golf Course Cook County |
25 | 3 | 1 | |
|
Mega Coin Kane County |
25 | 0 | 0 | |
|
Meijer #178 DuPage County |
25 | 0 | 0 | |
|
Meijer #183 Kane County |
25 | 0 | 0 | |
|
Meijer #198 DuPage County |
25 | 0 | 0 | |
|
Meijer (150268 Normal) McLean County |
25 | 0 | 0 | |
|
Meijer 192 Rockford Winnebago County |
25 | 1 | 1 | |
|
Meijer 219 Homer Glen Will County |
25 | 0 | 0 | |
|
Meijer 228 Rolling Meadows Cook County |
25 | 0 | 0 | |
|
Meijer 262 Orland Park Cook County |
25 | 0 | 0 | |
|
Meijer 264 Berwyn Cook County |
25 | 0 | 0 | |
|
Meijer 265 Evergreen Park Cook County |
25 | 0 | 0 | |
|
Meijer 280 Flossmoor Cook County |
25 | 0 | 0 | |
|
Meijer 281 Machesneypark Winnebago County |
25 | 0 | 0 | |
|
Meijer 289 Round Lake Beach Lake County |
25 | 0 | 0 | |
|
Meijer 301 Kankakee County |
25 | 0 | 0 | |
|
Meijer 313 DeKalb County |
25 | 0 | 0 | |
|
Meijer Danville Vermilion County |
25 | 0 | 0 | |
|
Meijer Springfield Sangamon County |
25 | 0 | 0 | |
|
Meijer Urbana Champaign County |
25 | 0 | 0 | |
|
Meijer-Algonquin/culligan SS McHenry County |
25 | 0 | 0 | |
|
Meijers 239 Kendall County |
25 | 0 | 0 | |
|
Mendota Area Y LaSalle County |
25 | 1 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.