Tapcensus

Nitrate violations in Illinois

613 active public water systems in Illinois had a Nitrate violation in the past three years, 6 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.

Health effects: Methemoglobinemia in infants under 6 months: gut bacteria convert nitrate to nitrite, which blocks oxygen transport in blood. Pregnant women should also take precautions. Chronic adult exposure at elevated levels may increase cancer risk.

Systems with a Nitrate violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Broadwell
Broadwell · Logan County
169 2 0
Hillsdale Estates, LLC
Rock Island County
163 3 0
Armstrong Twp HS
Vermilion County
162 3 0
Blackjacks
Kane County
160 2 1
Camp Robert Drake
Vermilion County
160 3 1
Castle Finn Winery
Edgar County
154 2 1
Camp Shabbona Woods
Cook County
153 3 1
Tpg Pressure, Inc.
Winnebago County
151 8 1
Blackhawk Farms Raceway
Winnebago County
150 3 1
Christ Mission Lutheran Church
Will County
150 7 2
Church of the Holy Apostles
Lake County
150 1 0
Eureka Sportsmens Club
Woodford County
150 3 1
Farmington Sportsmens Club
Peoria County
150 1 0
Gordyville USA
Champaign County
150 1 0
Hickory Hill Campground
Woodford County
150 3 1
Kolb Lena Cheese Company
Jo Daviess County
150 5 0
Lake Louise Campground Beach Well
Ogle County
150 3 1
Lake Louise Campground Middle Well
Ogle County
150 3 1
Lake Louise Campground West Well
Ogle County
150 3 1
Lighthouse Fellowship
Will County
150 2 1
Little Galilee Christian Asmby
De Witt County
150 1 0
Mutiny Boat Club Camp Area
Lake County
150 3 1
New Milford Express
Winnebago County
150 2 1
Oconnells-Store
Lee County
150 2 1
Pilcher Park Nature Museum
Will County
150 2 0
Prairie Road Pump Corporation
Rockford · Winnebago County
150 3 0
Richardson Electronics Ltd
Kane County
150 7 1
River Road Marina & Camping
Ogle County
150 3 2
Road Ranger LLC Ottawa
LaSalle County
150 2 1
Rookies II
Lake County
150 1 0
Speedway Lincoln Highway
Will County
150 3 1
Spring Valley Reformed Church
Whiteside County
150 2 0
ST Peter Lutheran Church (131946)
Cass County
150 3 2
Timber Pointe Oc-Sterns Lodge
McLean County
150 3 1
Meadows Mennonite Home
McLean County
140 8 1
Pbc Linear
Winnebago County
140 6 1
Rudys Place la Mina
Kane County
140 3 1
Timber Pointe Pool
McLean County
140 3 1
Allin Township Park
McLean County
134 3 2
Camp Akita Lodge Well
Knox County
134 1 0
High Road School
Boone County
131 8 2
Coldbrook Christian Church
Warren County
130 3 1
Ceco Recreation Association
Grundy County
125 2 1
Fond DU Lac Recreation Area
Will County
125 3 1
Great Sports INC
Will County
125 1 0
Longhollow Point HOA
Jo Daviess County
125 3 1
MR CS Family Restaurant
Winnebago County
125 3 1
Rock Springs Visitor Center
Macon County
125 2 1
Rockford Mutual Insurance CO
Winnebago County
125 1 0
Stagecoach at Gordyville
Champaign County
125 1 0
About this data

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