Water Quality in San Dimas, CA
14 water systems serving 160,917 people
City Overview
Average lead detection across San Dimas water systems is 1.5 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 40 |
| Health-based violations | 12 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in San Dimas
Frequently Asked Questions
Is San Dimas tap water safe to drink?
San Dimas 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 San Dimas, California?
San Dimas has 14 public water systems serving approximately 160,917 people. The average lead level across sampled systems is 1.5 ppb. There are 40 total violations on record.
Does San Dimas have lead in the water?
EPA monitoring data shows an average lead detection of 1.5 ppb across San Dimas's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve San Dimas?
14 public water systems are registered in San Dimas, California with the EPA Safe Drinking Water Information System. Together they serve approximately 160,917 people.