A
95

Excellent Water Quality

Pearl City, HI 96782

Honolulu County · Population served: 697,063 · Data updated March 2026

Water Systems Serving This Area

🌊
HNL-WINDWARD-PEARL HARBOR
Groundwater · Pop. 631,389
PWSID: HI0000331
🏔
WAIAWA CORRECTIONAL FACILITY
Surface water · Pop. 444
PWSID: HI0000348
🌊
JOINT BASE PEARL HARBOR-HICKAM
Groundwater · Pop. 65,230
PWSID: HI0000360

PFAS / Forever Chemicals

1 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFHxS3.0 ppt10 ppt10 pptBelow limit

Violation History (Last 5 Years)

1Total (5yr)
0Health-Based
0Major

Water Quality Summary

Understanding Your Water in Pearl City

Tap water quality in Pearl City, Hawaii (96782) receives an overall grade of A (Excellent) with a score of 95 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Hawaii state average of 95. Compared to the national average (75), this area performs significantly better. The area is served by 3 water systems providing water to approximately 697,063 people, using surface water and groundwater sources. PFAS testing detected 1 compound, all currently below EPA limits.

Your Score 95/100 A
vs State 0 pts below Hawaii avg (95)
vs National 20 pts above national avg (75)

What a Grade A Means

A score of 95/100 means the water supply in Pearl City, HI meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Pearl City, Hawaii receives a grade of A (Excellent) with a score of 95/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 96782 is served by 3 water systems using surface water, groundwater sources, providing water to approximately 697,063 people. Multiple source types mean your water may come from a blend of surface and underground sources.

No lead data is currently available for ZIP code 96782. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.

1 PFAS compound were detected in water serving Pearl City, Hawaii, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Pearl City, Hawaii have received 1 violation in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (PFAS), residents in Pearl City, Hawaii should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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