Water Quality in Johnstown, CO
2 water systems serving 24,900 people
City Overview
Average lead detection across Johnstown water systems is 1.5 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 305 |
| Health-based violations | 21 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Johnstown
Frequently Asked Questions
Is Johnstown tap water safe to drink?
Johnstown 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 Johnstown, Colorado?
Johnstown has 2 public water systems serving approximately 24,900 people. The average lead level across sampled systems is 1.5 ppb. There are 305 total violations on record.
Does Johnstown have lead in the water?
EPA monitoring data shows an average lead detection of 1.5 ppb across Johnstown's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Johnstown?
2 public water systems are registered in Johnstown, Colorado with the EPA Safe Drinking Water Information System. Together they serve approximately 24,900 people.