Water Quality: Sioux City, IA
2 water systems • 85,824 people served
Multiple Health ViolationsWater Quality Summary
Sioux City is served by 2 public water systems with a combined service population of 85,824 people, and has 21 EPA Safe Drinking Water Act violations on record. Critically, 10 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Sioux City's violation count is 33% above the national average for Iowa. Contaminants associated with violations include Contaminant 2257, TTHM.
Contaminants Found
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Water Systems Serving Sioux City
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| SIOUX CITY WATER SUPPLY | IA9778054 | Surface Water | 85,791 | 21 |
| BEREA HEIGHTS INC | IA9778301 | Groundwater | 33 | 0 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Iowa
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.