Water Quality in Issaquah, WA
36 water systems serving 48,577 people
City Overview
Average lead detection across Issaquah water systems is 1.1 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 856 |
| Health-based violations | 46 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Issaquah
Frequently Asked Questions
Is Issaquah tap water safe to drink?
Issaquah 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 Issaquah, Washington?
Issaquah has 36 public water systems serving approximately 48,577 people. The average lead level across sampled systems is 1.1 ppb. There are 856 total violations on record.
Does Issaquah have lead in the water?
EPA monitoring data shows an average lead detection of 1.1 ppb across Issaquah's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Issaquah?
36 public water systems are registered in Issaquah, Washington with the EPA Safe Drinking Water Information System. Together they serve approximately 48,577 people.