Lyons

PWSID: IL0311710

System Details

Population Served10,304
Service Connections2,975
Water SourceSurface Water Purchased
System TypeCommunity Water System
OwnerLocal Government
StatusActive
CityLyons
Zip Code60534

Areas Served

  • Lyons, Cook County

Lead & Copper Testing

ContaminantLevelEPA Action LevelStatus
Lead (90th percentile)0.0088 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0065 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0061 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0053 mg/L0.015 mg/LBelow Action Level

1 Active Violations

ContaminantViolationDateHealth-BasedStatus
2025-07-02Open

Violation History (7 total)

ContaminantViolationDateHealth-BasedStatus
2020-07-01Returned to Compliance
2020-07-01Returned to Compliance
1996-01-01YesReturned to Compliance
1994-01-01YesReturned to Compliance
1993-01-01YesReturned to Compliance
1992-12-07YesReturned to Compliance