Water Quality in Mariposa, CA
76 water systems serving 13,390 people
City Overview
Average lead detection across Mariposa water systems is 8.6 ppb (Moderate). The EPA action level is 15 ppb. 2 systems have triggered action level violations.
Violation Summary
| Total violations on record | 551 |
| Health-based violations | 267 |
| Lead action level violations | 2 |
| Open (unresolved) violations | 0 |
Water Systems in Mariposa
Frequently Asked Questions
Is Mariposa tap water safe to drink?
Mariposa 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 Mariposa, California?
Mariposa has 76 public water systems serving approximately 13,390 people. The average lead level across sampled systems is 8.6 ppb. There are 551 total violations on record.
Does Mariposa have lead in the water?
EPA monitoring data shows an average lead detection of 8.6 ppb across Mariposa's water systems. The EPA action level is 15 ppb. 2 systems have triggered lead action level violations.
How many water utilities serve Mariposa?
76 public water systems are registered in Mariposa, California with the EPA Safe Drinking Water Information System. Together they serve approximately 13,390 people.