Water Quality in Markham, IL
10 water systems serving 12,880 people
City Overview
Average lead detection across Markham water systems is 3.0 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 148 |
| Health-based violations | 19 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Markham
Frequently Asked Questions
Is Markham tap water safe to drink?
Markham 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 Markham, Illinois?
Markham has 10 public water systems serving approximately 12,880 people. The average lead level across sampled systems is 3.0 ppb. There are 148 total violations on record.
Does Markham have lead in the water?
EPA monitoring data shows an average lead detection of 3.0 ppb across Markham's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Markham?
10 public water systems are registered in Markham, Illinois with the EPA Safe Drinking Water Information System. Together they serve approximately 12,880 people.