Water Quality in St. Helena, CA
45 water systems serving 29,230 people
City Overview
Average lead detection across St. Helena water systems is 1.1 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 452 |
| Health-based violations | 93 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in St. Helena
Frequently Asked Questions
Is St. Helena tap water safe to drink?
St. Helena 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 St. Helena, California?
St. Helena has 45 public water systems serving approximately 29,230 people. The average lead level across sampled systems is 1.1 ppb. There are 452 total violations on record.
Does St. Helena have lead in the water?
EPA monitoring data shows an average lead detection of 1.1 ppb across St. Helena's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve St. Helena?
45 public water systems are registered in St. Helena, California with the EPA Safe Drinking Water Information System. Together they serve approximately 29,230 people.