Water Quality in Darien, IL
22 water systems serving 39,624 people
City Overview
Average lead detection across Darien water systems is 0.4 ppb (Very low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 1132 |
| Health-based violations | 44 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Darien
Frequently Asked Questions
Is Darien tap water safe to drink?
Darien tap water meets EPA standards for most contaminants. Review the individual water system pages below for the latest lead sample results and violation history.
What is the water quality in Darien, Illinois?
Darien has 22 public water systems serving approximately 39,624 people. The average lead level across sampled systems is 0.4 ppb. There are 1132 total violations on record.
Does Darien have lead in the water?
EPA monitoring data shows an average lead detection of 0.4 ppb across Darien's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Darien?
22 public water systems are registered in Darien, Illinois with the EPA Safe Drinking Water Information System. Together they serve approximately 39,624 people.