Mangilao
Is Mangilao tap water safe to drink?
Generally acceptable, but review local hotspots — score 77/100. This report aggregates EPA drinking water data across 3 local systems in Mangilao. We found 160 total violations (57 unresolved).
Real-Time Environment
Live: 06:15 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Mangilao.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Mangilao?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Wondering if Mangilao tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Mangilao tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Mangilao, water quality belongs on your due-diligence checklist alongside schools and crime data. With a score of 77/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
Health & Family Safety
Residents should monitor Copper (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 Mangilao
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Mangilao.
Frequently Asked Questions
Is Mangilao tap water safe to drink?
Generally acceptable, but review local hotspots — score 77/100.
How many water systems serve Mangilao?
Mangilao is served by 3 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Mangilao?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Mangilao.
What is the water quality score for Mangilao?
The water quality score for Mangilao is 77 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 Mangilao?
The top contaminants detected in Mangilao include Copper (90th percentile), Lead (90th percentile). View detailed information on our contaminants page.
Mangilao Water Quality Summary
Mangilao, GU receives a water quality score of 77/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 3 public water systems serving the area.
Mangilao'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.
and below the nationwide average of roughly 78/100 across all U.S. states.
Prospective homebuyers looking at Mangilao will find that this mid-sized city in GU offers a generally reliable public water supply that compares favorably to many regions across the United States. The drinking water from the city's multiple distribution systems meets a solid standard of quality, showing that safety measures are well-established even if there is still room for further optimization. For everyday residents, this translates to a dependable tap water resource that satisfies most safety expectations, though it sits slightly below the highest tier of municipal water performance.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →
Key Contaminants
Get notified if Mangilao's water quality changes
Free email alert when the EPA reports a new violation or boil-water advisory for your water system. No spam — just the alerts you asked for.
By subscribing you agree to receive occasional water-quality alert emails. Unsubscribe anytime. See our Privacy Policy.
Water Systems Serving Mangilao (3)
Check Your Specific Address
Water quality can vary by neighborhood in Mangilao.
Related
Quick compare in GU
Compare Mangilao water quality: View all states · Contaminant library · How we score water quality