Water Quality in Sioux City, IA
44 water systems serving 91,881 people
City Overview
Average lead detection across Sioux City water systems is 4.6 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 613 |
| Health-based violations | 146 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Sioux City
Frequently Asked Questions
Is Sioux City tap water safe to drink?
Sioux 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 Sioux City, Iowa?
Sioux City has 44 public water systems serving approximately 91,881 people. The average lead level across sampled systems is 4.6 ppb. There are 613 total violations on record.
Does Sioux City have lead in the water?
EPA monitoring data shows an average lead detection of 4.6 ppb across Sioux City's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Sioux City?
44 public water systems are registered in Sioux City, Iowa with the EPA Safe Drinking Water Information System. Together they serve approximately 91,881 people.