- EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
- Lithium: found in 2 of 4 samples, average 5.6 µg/L, highest 13.1 µg/L (EPA UCMR 5 testing, Nov 2023–Aug 2024)
- PFBA (a PFAS): found in 4 of 4 samples, average 13.6 ppt, highest 18.1 ppt (EPA UCMR 5 testing, Nov 2023–Aug 2024)
- PFHxA (a PFAS): found in 1 of 4 samples, average 1.1 ppt, highest 4.4 ppt (EPA UCMR 5 testing, Nov 2023–Aug 2024)
- PFPeA (a PFAS): found in 1 of 4 samples, average 1 ppt, highest 4.2 ppt (EPA UCMR 5 testing, Nov 2023–Aug 2024)
- Lead, 90th percentile: 2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jul 1, 2025–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
East St. Louis, IL tap water: what EPA records show
EPA IL1635040 · serves East St Louis, IL · about 131,368 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
IL American-East ST Louis (EPA IL1635040)
EPA data as of October 14, 2026. For East St. Louis's main utility, IL American-East ST Louis: We found no health-based violations in EPA's records for this system (IL1635040) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for IL American-East ST Louis, as of October 14, 2026
We found no health-based violations in EPA's records for this system (IL1635040) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for IL American-East ST Louis (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jul 1, 2025–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does IL American-East ST Louis use chloramine?
EPA treatment records (state-reported) list chloramines for IL American-East ST Louis. EPA record