Water Quality in Mason City, IA
45 water systems serving 29,656 people
City Overview
Average lead detection across Mason City water systems is 1.9 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 2564 |
| Health-based violations | 436 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Mason City
Frequently Asked Questions
Is Mason City tap water safe to drink?
Mason City 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 Mason City, Iowa?
Mason City has 45 public water systems serving approximately 29,656 people. The average lead level across sampled systems is 1.9 ppb. There are 2564 total violations on record.
Does Mason City have lead in the water?
EPA monitoring data shows an average lead detection of 1.9 ppb across Mason City's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Mason City?
45 public water systems are registered in Mason City, Iowa with the EPA Safe Drinking Water Information System. Together they serve approximately 29,656 people.