WaterQ
Hawaii State Report All States
Official Status: March 2026

Is Wailuku tap water safe to drink?

⚠ Caution Advised
D

Use extra caution — Wailuku scores 39/100.

Safety Score
39
out of 100

Still not sure if you need a filter in Wailuku?

Read Decision Guide →

Wailuku

Hawaii

View Hawaii state report Verified: Apr 2026

Is Wailuku tap water safe to drink?

Use extra caution — Wailuku scores 39/100. This report aggregates EPA drinking water data across 0 local systems in Wailuku. We found 0 total violations (0 unresolved).

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Wailuku?

Requirement Status
Recommended
🟡
💡

Expert Advice

Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.

Buying a Filter?

Should you buy a water purifier in Wailuku? See our analysis.

Baby Formula Safety

Is Wailuku tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Wailuku, water quality is a key factor in long-term property maintenance. With a score of 39/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

Health & Family Safety

Current records show no major contaminant spikes, making Wailuku a preferred choice for health-conscious families.

View Health Risk Glossary →

Score Breakdown for Wailuku

EPA Compliance & Violations 60/100
Contaminant Safety Margin 39%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

Frequently Asked Questions

Is Wailuku tap water safe to drink?

Use extra caution — Wailuku scores 39/100.

How many water systems serve Wailuku?

Wailuku is served by 0 public water systems in our latest EPA-backed dataset.

How can I check water quality for my exact address in Wailuku?

Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Wailuku.

What is the water quality score for Wailuku?

The water quality score for Wailuku is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Wailuku?

Current contaminant data for Wailuku is being updated. Check back soon or search your specific address for the latest results.

Water Quality Score
39/100
Grade
F
Water Systems
8
Population
141,757

Wailuku Water Quality Summary

Wailuku, HI receives a water quality score of 39/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 8 public water systems serving the area.

Wailuku'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.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Water Systems Serving Wailuku (0)

Water system data coming soon for Wailuku.

Related

Compare Wailuku water quality: View all states · Contaminant library · How we score water quality