IL / Lexington
IL · Tap water records
Lexington tap water, in plain English
Here is what the EPA's own data shows about tap water in Lexington. According to EPA SDWIS data retrieved June 2026, Lexington is served by 2 active community water systems, together reported to serve about 2,087 people.
As of June 2026, EPA records show 27 violations across the community water system(s) serving Lexington, going back to the earliest EPA record. 12 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Lexington
1,930 served · groundwater · PWSID IL1130800 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 4 times in July 2023. The EPA record lists a level of 0.082 MG/L; the limit (MCL) is 0.08 MG/L. EPA records do not show all of these as returned to compliance.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between July 2003 and July 2012. All have since returned to compliance, per EPA records.
Cooksville
157 served · groundwater · PWSID IL1130400 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 6 times between April 2019 and April 2025. The EPA record lists a level of 0.111 MG/L; the limit (MCL) is 0.08 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in April 2025. The EPA record lists a level of 0.076 MG/L; the limit (MCL) is 0.06 MG/L. EPA records do not show all of these as returned to compliance.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 13 times between October 2004 and May 2025. All have since returned to compliance, per EPA records.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.