
Originally published Aug. 13, 2026, by Belleville News-Democrat
Months after Cahokia Heights residents found E. coli in water from their kitchen taps, the community’s water providers have been cited by the Illinois Environmental Protection Agency for deficient disinfection methods.
When the Illinois EPA conducted testing over three days last week, water inside residents’ homes from both the city and private water company Illinois American Water had low levels of chlorine, a common disinfectant utilities use to kill germs as water travels through pipes to homes.
The state’s regulatory standard is 1.0 milligram per liter. The deficient results in Cahokia Heights ranged from 0.03 to 0.64, according to documents provided by the Illinois EPA.
Community-organized testing from June to December also found low chlorine levels in tap water, in addition to E. coli in some samples.
“This is a health hazard to our community,” longtime resident Yvette Lyles said at a news conference Wednesday.
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