Tapcensus

Styrene violations in Illinois

196 active public water systems in Illinois had a Styrene violation in the past three years, 10 of them in the latest quarter of EPA's data. What Styrene is and why it matters.

Health effects: Chronic exposure to styrene is associated with liver, kidney, and nervous system effects. EPA classifies it as a possible human carcinogen (Group C) based on limited animal evidence. Short-term exposure can cause irritation of the eyes, nose, and throat. Long-term exposure above the MCL is the primary concern for public water system violations.

Systems with a Styrene violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
First Student #12903
Will County
160 7 2
Kone INC
Henry County
160 3 0
Tpg Pressure, Inc.
Winnebago County
151 8 1
Christ Mission Lutheran Church
Will County
150 7 2
Kolb Lena Cheese Company
Jo Daviess County
150 5 0
Lisbon Grade School
Kendall County
150 3 1
Manchester School
Boone County
150 6 2
Richardson Electronics Ltd
Kane County
150 7 1
Wood Dale Estates
DuPage County
145 4 0
Cross Lutheran School
Kendall County
140 1 0
Pbc Linear
Winnebago County
140 6 1
ST Marys School Bored Well
Peoria County
140 9 1
Illinois City Elementary Schoo
Rock Island County
136 2 0
Kid Country Child Care
Will County
134 2 0
High Road School
Boone County
131 8 2
Spring Lake Consol School
Tazewell County
125 6 0
South Barrington Partners, LLC
Cook County
121 5 0
Linn Mennonite Church & School
Woodford County
120 3 0
Old Shawneetown
Old Shawneetown · Gallatin County
118 2 0
Wheatland School
Will County
116 6 2
Deans Illinois Dairies
Winnebago County
110 6 0
Imtt Illinois LLC Lemont
Cook County
110 6 2
Grown Rogue
Livingston County
103 3 1
Grace Lutheran/sue Fosdal
McHenry County
100 2 0
Leica Biosystems
McHenry County
100 2 1
Rutland School Dist 230
LaSalle County
100 1 0
Seward Screw Products 16377
Winnebago County
100 5 0
Taleem UL Haq
Will County
100 5 1
TC Industries
McHenry County
100 3 0
Top Die Casting CO
Winnebago County
100 7 2
Armstrong-Ellis Grade School
Vermilion County
97 3 0
Toyal America
Will County
90 3 1
Durham School Services
Will County
80 2 0
Montessori Academy Glen Ellyn
DuPage County
80 4 0
Riverdale Preschool Center
Whiteside County
80 3 0
Trinity Lutheran School
Randolph County
80 9 1
East Side MHP
Champaign County
79 1 0
Chana Education Center
Ogle County
75 2 0
HA International LLC
Ogle County
75 2 0
Vvf LLC
Kane County
75 6 1
Chicago Autism Academy
Will County
74 6 2
Posh Tots Academy
Woodford County
70 4 1
Imtt Illinois LLC Channahon
Will County
66 4 0
Rooks Creek Elementary School
Livingston County
66 10 1
Ilg Greenhouse, LLC
Kendall County
65 2 0
Washington Mills
Putnam County
65 6 0
Ads Valley View Landfill, INC
Macon County
60 3 0
American Precision Elctronics
DuPage County
60 4 1
Crest Foods Mixing Dept
Lee County
60 2 0
Ferrite International
Lake County
60 6 2
About this data

A system is counted once if any of its violations in the past three years involved Styrene, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Styrene 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.