Nitrite violations in Illinois
213 active public water systems in Illinois had a Nitrite violation in the past three years, 7 of them in the latest quarter of EPA's data. What Nitrite is and why it matters.
Systems with a Nitrite violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Staunton Staunton · Macoupin County |
5,756 | 4 | 0 | |
|
Hillsboro Hillsboro · Montgomery County |
4,402 | 3 | 0 | |
|
Nashville Nashville · Washington County |
3,230 | 1 | 0 | |
|
Grayville Grayville · White County |
1,613 | 3 | 1 | |
|
Brocton Brocton · Edgar County |
288 | 6 | 2 | |
|
Timber Ridge Mobile Estates Stephenson County |
150 | 1 | 0 | |
|
Walnut Grove MHC Champaign County |
40 | 5 | 0 | |
|
Elk Grove Village Elk Grove · Cook County |
31,802 | 4 | 1 | |
|
Sugar Grove Sugar Grove · Kane County |
11,243 | 1 | 0 | |
|
Waterloo Waterloo · Monroe County |
10,190 | 7 | 0 | |
|
Crete Crete · Will County |
8,386 | 4 | 0 | |
|
Genoa Genoa · DeKalb County |
5,298 | 3 | 0 | |
|
Coal Valley Coal Valley · Rock Island County |
3,873 | 3 | 0 | |
|
Steeple Run Sbdv DuPage County |
1,931 | 1 | 0 | |
|
Wataga Wataga · Knox County |
965 | 5 | 1 | |
|
Percy Percy · Randolph County |
961 | 4 | 0 | |
|
Pride of the Prairie Rest Area Macon County |
800 | 4 | 1 | |
|
Fyre Lake Water Company Mercer County |
760 | 3 | 0 | |
|
Christian Life Church Will County |
730 | 1 | 0 | |
|
Gas City 143rd Street Will County |
700 | 1 | 0 | |
|
IL American-Bahl Water Company Jo Daviess County |
700 | 7 | 1 | |
|
Baker Koren Round Barn Will County |
600 | 2 | 0 | |
|
Three Rivers Church Will County |
600 | 1 | 0 | |
|
I-57 Prairie View South Will County |
500 | 1 | 0 | |
|
Siegals Cottonwood Farms Will County |
500 | 1 | 0 | |
|
White Fence Farm Will County |
500 | 1 | 0 | |
|
Croppers 1st 4th and 5th Addition Rock Island County |
495 | 1 | 0 | |
|
Tamarack Golf Club Ltd Will County |
400 | 2 | 1 | |
|
Rainbow Council Scout Res Main Grundy County |
350 | 2 | 0 | |
|
Zion Lutheran Church (25015) Will County |
350 | 1 | 0 | |
|
Montebello Estate Will County |
303 | 1 | 0 | |
|
Johansen Farms Will County |
300 | 2 | 1 | |
|
Joliet Shell Fast N Fresh Will County |
300 | 1 | 0 | |
|
Naperbrook Golf Course Will County |
300 | 1 | 0 | |
|
Southfield Church Will County |
300 | 1 | 0 | |
|
Strike N Spare Will County |
300 | 1 | 0 | |
|
Mauh-Nah-Tee-See C C Winnebago County |
277 | 2 | 1 | |
|
Bradley Bourbonnais Youth Softball Kankakee County |
250 | 3 | 0 | |
|
Camp Lowden/main Lodge Ogle County |
250 | 1 | 0 | |
|
Lorenzo Road Fuel Stop Will County |
250 | 3 | 1 | |
|
Steward Steward · Lee County |
238 | 4 | 0 | |
|
Seaton Seaton · Mercer County |
214 | 4 | 0 | |
|
Cortland Corners MHP DeKalb County |
205 | 10 | 3 | |
|
Emerald Acres Campground II North Stephenson County |
200 | 3 | 1 | |
|
Immanuel Lutheran Church (121194) Champaign County |
200 | 2 | 0 | |
|
Naperbrook Golf Course 2 Will County |
200 | 1 | 0 | |
|
Naperbrook Golf Course 3 Will County |
200 | 3 | 0 | |
|
New Lenox Discount Pantry Will County |
200 | 1 | 0 | |
|
Plainfield Amoco Will County |
200 | 1 | 0 | |
|
Putnam County JR High Putnam County |
200 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrite, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrite 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. Retrieved from ECHO on Oct 11, 2026.