Surprise
Is Surprise tap water safe to drink?
Mostly yes — Surprise scores 88/100. This report aggregates EPA drinking water data across 3 local systems in Surprise. We found 597 total violations (107 unresolved).
Real-Time Environment
Live: 11:00 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Surprise.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Surprise?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filter requirements and certified reduction benchmarks for Surprise tap water.
Baby Formula Safety
Infant formula preparation risks, nitrate levels, and lead pipe guidance in Surprise.
Homebuyer's Perspective
Evaluating water infrastructure in Surprise protects plumbing and helps estimate water heater longevity. The high safety score (88/100) suggests lower risk for plumbing corrosion and appliance scaling.
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 Surprise
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Surprise.
Frequently Asked Questions
Is Surprise tap water safe to drink?
Mostly yes — Surprise scores 88/100.
How many water systems serve Surprise?
Surprise is served by 3 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Surprise?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Surprise.
What is the water quality score for Surprise?
The water quality score for Surprise is 88 out of 100, based on EPA contaminant data, violation history, and testing results across the 3 systems serving the city.
What are the top contaminants in Surprise?
The top contaminants detected in Surprise include Lead (90th percentile). View detailed information on our contaminants page.
Surprise Water Quality Summary
Surprise, AZ receives a water quality score of 88/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 3 public water systems serving the area.
Surprise's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
Surprise's score of 88 is 33 points above the Arizona state average of 55, and above the nationwide average of roughly 78/100 across all U.S. states.
Prospective homebuyers looking at Surprise, Arizona, will find reassurance in the near-perfect marks and top-tier grade achieved by the local drinking water. Despite the challenges of a fast-growing urban center in the arid Desert Southwest, this mid-size city successfully manages its groundwater-dependent resources to deliver excellent quality. This high level of performance remains consistent across both of the city's water systems, offering regulatory reliability to residents.
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 Surprise (3)
Check Your Specific Address
Water quality can vary by neighborhood in Surprise.
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Compare Surprise water quality: View all states · Contaminant library · How we score water quality