Cryptosporidium violations in Illinois
1 active public water systems in Illinois had a Cryptosporidium violation in the past three years. What Cryptosporidium is and why it matters.
Systems with a Cryptosporidium violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
EJ Water Cooperative Jasper County |
29,720 | 5 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Cryptosporidium, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Cryptosporidium 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.