Sierra Vista
Is Sierra Vista tap water safe to drink?
Use extra caution — Sierra Vista scores 54/100. This report aggregates EPA drinking water data across 6 local systems in Sierra Vista. We found 5672 total violations (500 unresolved).
Real-Time Environment
Live: 09:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Sierra Vista.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Sierra Vista?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Filtration technologies matched to Sierra Vista contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Sierra Vista.
Homebuyer's Perspective
Municipal water quality in Sierra Vista directly influences pipe corrosion rates and home filtration needs. With a score of 54/100, 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 Sierra Vista
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Sierra Vista.
Frequently Asked Questions
Is Sierra Vista tap water safe to drink?
Use extra caution — Sierra Vista scores 54/100.
How many water systems serve Sierra Vista?
Sierra Vista is served by 6 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Sierra Vista?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Sierra Vista.
What is the water quality score for Sierra Vista?
The water quality score for Sierra Vista is 54 out of 100, based on EPA contaminant data, violation history, and testing results across the 6 systems serving the city.
What are the top contaminants in Sierra Vista?
The top contaminants detected in Sierra Vista include Lead (90th percentile). View detailed information on our contaminants page.
Sierra Vista Water Quality Summary
Sierra Vista, AZ receives a water quality score of 54/100 (Grade D) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 6 public water systems serving the area.
Sierra Vista's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.
Sierra Vista's score of 54 is 1 point below 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 Sierra Vista (6)
Bella Vista Water South
ABella Vista City Water System
ASouthern Sunrise Wc Cochise Horseshoe
FLiberty Water Rio Rico
BPueblo Del Sol Water Company
FCochise County Community College Distric
FCheck Your Specific Address
Water quality can vary by neighborhood in Sierra Vista.
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Compare Sierra Vista water quality: View all states · Contaminant library · How we score water quality