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
Ayers Landing
LaSalle County 		25 2 0
Big River Equestrian Area Well
Henderson County 		25 2 0
Big River Shady Pines Camp
Henderson County 		25 2 0
Big River State Forest Office
Henderson County 		25 1 0
Blue Beech Family Picnic Area 3087
Cook County 		25 3 1
Brown Bag Video
LaSalle County 		25 2 1
Buddy's Bites N Brews
Cook County 		25 3 1
Bunker Hill 2100
Cook County 		25 3 1
Bunker Hill Woods HP2094
Cook County 		25 3 1
Bur Oak Woods 5025
Cook County 		25 3 1
Bur Oak Woods 5028
Cook County 		25 2 1
Busse Boat Dock 1228
Cook County 		25 3 1
Busse Boat Dock 1229
Cook County 		25 3 1
Busse Boat Dock 1230
Cook County 		25 3 1
Busse Boat Dock 1241
Cook County 		25 3 1
Busse Forest Main Dam 1235
Cook County 		25 3 1
Cache River State Natural Area
Pulaski County 		25 2 1
Camp Duncan Fireside
Lake County 		25 4 2
Camp Duncan Sorenson Lodge
Lake County 		25 4 2
Camp Greene Wood Odakota
DuPage County 		25 1 0
Camp Greenewood Antakisic
DuPage County 		25 3 1
Camp Greenwood Mon Daw Min
DuPage County 		25 3 1
Camp Greenwood Qui Quito
DuPage County 		25 1 0
Camp Greshiem Christian Retrea
Logan County 		25 2 1
Camp Henry Horner Red Leaf Village
Lake County 		25 3 1
Camp Henry Horner Tree House HP
Lake County 		25 3 1
Campground RD Wds GR1 1127
Cook County 		25 3 1
Canyon Lake Services INC
Jo Daviess County 		25 3 1
Captains Quarters
Lake County 		25 3 0
Castle Rock State Park Aspen Ridge
Ogle County 		25 3 2
Chebanse Recreation Area Main
Kankakee County 		25 2 1
Clayton F Smith Woods 2098
Cook County 		25 3 1
Clinton Marina
De Witt County 		25 3 1
Colsp/pike Marsh #8
Lake County 		25 1 0
Congregation Beth Judea
Lake County 		25 1 0
Cosman Bike Trail 1247
Cook County 		25 3 1
Crooked Creek Wds West 5155
Cook County 		25 3 1
DC Estates Winery
Winnebago County 		25 2 1
Dogwood Inn
Ogle County 		25 1 0
Double Tree Hills
Knox County 		25 3 2
Dynegy Energy
Kendall County 		25 1 0
Eaton Preserve
Will County 		25 2 0
Edwards Apple Orchard-West
Winnebago County 		25 1 0
Elk Herd 1219
Cook County 		25 3 1
Embrace Daycare
Peoria County 		25 2 1
Emersons
Whiteside County 		25 1 0
Evening Star Camping Resort (150201)
Mason County 		25 3 1
Evening Star Camping Resort (4150)
Mason County 		25 2 1
Evening Star Camping Resort(3608)
Mason County 		25 3 1
Family Picnic Area 3116
Cook County 		25 3 1
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.