Water Quality in Thornton, CO
12 water systems serving 230,926 people
City Overview
Average lead detection across Thornton water systems is 1.1 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 731 |
| Health-based violations | 27 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Thornton
Frequently Asked Questions
Is Thornton tap water safe to drink?
Thornton 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 Thornton, Colorado?
Thornton has 12 public water systems serving approximately 230,926 people. The average lead level across sampled systems is 1.1 ppb. There are 731 total violations on record.
Does Thornton have lead in the water?
EPA monitoring data shows an average lead detection of 1.1 ppb across Thornton's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Thornton?
12 public water systems are registered in Thornton, Colorado with the EPA Safe Drinking Water Information System. Together they serve approximately 230,926 people.