Water Quality: San Luis, AZ

1 water system • 39,705 people served

Some Concerns
35
Total Violations
3
Health-Based Violations
1
Water Systems
39,705
Population Served

Water Quality Summary

San Luis is served by 1 public water system with a combined service population of 39,705 people, and has 35 EPA Safe Drinking Water Act violations on record. Critically, 3 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. San Luis's violation count is 91% below the national average for Arizona. Contaminants associated with violations include Chlorine Dioxide.

Contaminants Found

Chlorine Dioxide

Can cause anemia in infants and young children; may cause nervous system effects at high levels.

Common source: Water treatment disinfectant used to control taste, odor, and microorganisms

EPA limit: 0.8 mg/L

Water Systems Serving San Luis

System Name PWSID Source Population Violations
SAN LUIS CITY OF AZ0414005 Groundwater 39,705 35

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 Arizona

View all cities in Arizona →

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.

Verify at epa.govSearch ECHO for AZ