Water Quality in Mercer Island, WA
8 water systems serving 35,343 people
City Overview
Average lead detection across Mercer Island water systems is 6.3 ppb (Moderate). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 34 |
| Health-based violations | 3 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Mercer Island
Frequently Asked Questions
Is Mercer Island tap water safe to drink?
Mercer Island 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 Mercer Island, Washington?
Mercer Island has 8 public water systems serving approximately 35,343 people. The average lead level across sampled systems is 6.3 ppb. There are 34 total violations on record.
Does Mercer Island have lead in the water?
EPA monitoring data shows an average lead detection of 6.3 ppb across Mercer Island's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Mercer Island?
8 public water systems are registered in Mercer Island, Washington with the EPA Safe Drinking Water Information System. Together they serve approximately 35,343 people.