Mercury violations in Illinois
80 active public water systems in Illinois had a Mercury violation in the past three years, 2 of them in the latest quarter of EPA's data. What Mercury is and why it matters.
Systems with a Mercury violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Christ Mission Lutheran Church Will County |
150 | 7 | 2 | |
|
Richardson Electronics Ltd Kane County |
150 | 7 | 1 | |
|
Pbc Linear Winnebago County |
140 | 6 | 1 | |
|
ST Marys School Bored Well Peoria County |
140 | 9 | 1 | |
|
Mindhaven Academy McHenry County |
100 | 7 | 1 | |
|
Sauber Mfg CO Super Shop Kane County |
84 | 2 | 0 | |
|
Loves Travel Stop Ogle County |
80 | 6 | 2 | |
|
Riverdale Preschool Center Whiteside County |
80 | 3 | 0 | |
|
Rovanco Piping System INC Will County |
80 | 4 | 0 | |
|
Trinity Lutheran School Randolph County |
80 | 9 | 1 | |
|
Vvf LLC Kane County |
75 | 6 | 1 | |
|
Posh Tots Academy Woodford County |
70 | 4 | 1 | |
|
Rooks Creek Elementary School Livingston County |
66 | 10 | 1 | |
|
Washington Mills Putnam County |
65 | 6 | 0 | |
|
Spectrum Preferred Meats Ogle County |
60 | 7 | 1 | |
|
Career Center of Southern Illinois Monroe County |
50 | 9 | 2 | |
|
Focus House Ogle County |
50 | 6 | 0 | |
|
Kindercare McHenry McHenry County |
50 | 4 | 0 | |
|
Primrose School Lake County |
50 | 4 | 0 | |
|
Tegrant Sonoco Protective Solutions Will County |
50 | 6 | 0 | |
|
Carmel Montessori Academy DuPage County |
40 | 6 | 1 | |
|
Wells Concrete McHenry County |
40 | 5 | 0 | |
|
JX Peterbilt Lake County |
34 | 5 | 1 | |
|
Wedron Silica Sand Company LaSalle County |
29 | 6 | 1 | |
|
Nitrex INC Chicago Operations Kane County |
25 | 3 | 0 | |
|
Peaceful Pathways Kendall County |
25 | 6 | 0 | |
|
Wedron Silica 2 LaSalle County |
25 | 5 | 1 | |
|
Winnebago County Rock 39 Winnebago County |
25 | 7 | 1 | |
|
Wtvo TV Winnebago County |
25 | 5 | 0 | |
|
Bluff Lake Lodges, Inc. Antioch · Lake County |
24 | 8 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Mercury, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Mercury 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.