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.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Walker Estates Park Will County |
25 | 3 | 1 | |
|
Wampum Lake HP 6278 Cook County |
25 | 3 | 1 | |
|
Wayside Wds 2090 Cook County |
25 | 3 | 1 | |
|
Webbs Valley View Campground Fulton County |
25 | 3 | 0 | |
|
Whiskey Ridge Saloon, LLC Sangamon County |
25 | 1 | 0 | |
|
Wilson Nurseries Camp NO 2 Kane County |
25 | 4 | 2 | |
|
Wilson Nurseries Camp NO 3 Kane County |
25 | 3 | 2 | |
|
Winn Farm Bureau Riverview FS Winnebago County |
25 | 1 | 0 | |
|
Winnebago County Rock 39 Winnebago County |
25 | 7 | 1 | |
|
Woodford State Fish & Wildlife Area Woodford County |
25 | 3 | 1 | |
|
Woodland Hills Camping & Recreation Knox County |
25 | 4 | 2 | |
|
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 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.