San Luis
Is San Luis tap water safe to drink?
Generally acceptable, but review local hotspots — score 72/100. This report aggregates EPA drinking water data across 1 local system in San Luis. We found 684 total violations (56 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in San Luis.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in San Luis?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Evaluation of municipal compliance and household filtration options in San Luis.
Baby Formula Safety
EPA compliance thresholds and pediatric water precautions for San Luis.
Homebuyer's Perspective
Water system history in San Luis informs property maintenance and private filtration requirements. With a score of 72/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for San Luis
Based on EPA SDWIS violation records and contaminant test results for all water systems serving San Luis.
Frequently Asked Questions
Is San Luis tap water safe to drink?
Generally acceptable, but review local hotspots — score 72/100.
How many water systems serve San Luis?
San Luis is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in San Luis?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for San Luis.
What is the water quality score for San Luis?
The water quality score for San Luis is 72 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.
What are the top contaminants in San Luis?
The top contaminants detected in San Luis include Lead (90th percentile). View detailed information on our contaminants page.
San Luis Water Quality Summary
San Luis, AZ receives a water quality score of 72/100 (Grade C) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
San Luis's water quality is near the national average. While most systems meet EPA standards, some violations have been recorded. Residents may wish to review their specific water system's report for contaminant details.
San Luis's score of 72 is 17 points above the Arizona state average of 55, and below the nationwide average of roughly 78/100 across all U.S. states.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Arizona water quality rankings report →
Key Contaminants
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Water Systems Serving San Luis (1)
Check Your Specific Address
Water quality can vary by neighborhood in San Luis.
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