Water Quality in Madison, WI
848 water systems serving 405,719 people
City Overview
Average lead detection across Madison water systems is 3.1 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 12335 |
| Health-based violations | 4133 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Madison
Frequently Asked Questions
Is Madison tap water safe to drink?
Madison 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 Madison, Wisconsin?
Madison has 848 public water systems serving approximately 405,719 people. The average lead level across sampled systems is 3.1 ppb. There are 12335 total violations on record.
Does Madison have lead in the water?
EPA monitoring data shows an average lead detection of 3.1 ppb across Madison's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Madison?
848 public water systems are registered in Madison, Wisconsin with the EPA Safe Drinking Water Information System. Together they serve approximately 405,719 people.