Water Quality in Sonora, CA
137 water systems serving 62,188 people
City Overview
Average lead detection across Sonora water systems is 1.3 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 1048 |
| Health-based violations | 210 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Sonora
Frequently Asked Questions
Is Sonora tap water safe to drink?
Sonora 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 Sonora, California?
Sonora has 137 public water systems serving approximately 62,188 people. The average lead level across sampled systems is 1.3 ppb. There are 1048 total violations on record.
Does Sonora have lead in the water?
EPA monitoring data shows an average lead detection of 1.3 ppb across Sonora's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Sonora?
137 public water systems are registered in Sonora, California with the EPA Safe Drinking Water Information System. Together they serve approximately 62,188 people.