Drinking Water Systems in JOLIET, Illinois

14 water systems are reported for this city, with a combined service population of 168,918. The systems have 621 EPA violation records in the five-year period ending June 30, 2026.

Water Systems Serving JOLIET

EPA Contaminant Categories in Historical Violation Records

Coliform (TCR)174 records
Public Notice95 records
Radium-22665 records
Chlorine53 records
Benzene44 records
Revised Total Coliform Rule40 records
Gross Alpha35 records
Lead and Copper Rule34 records
1,2-Dichloroethane30 records
Xylenes, Total29 records

Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.