Tap Water Quality in Honolulu, HI
Find out what's in your drinking water. Enter your ZIP code below for a detailed water quality report for Honolulu, Hawaii.
Try 96813 for Honolulu
Honolulu Drinking Water Overview
Population: ~350,000 | Source: Volcanic aquifer groundwater
Honolulu's drinking water comes from deep volcanic aquifers that naturally filter rainwater through layers of basalt. The 2021 Red Hill fuel storage facility crisis contaminated the Navy's water system and raised serious concerns about the broader aquifer. The Honolulu Board of Water Supply has increased monitoring and testing in response to PFAS and fuel contamination threats.
Common water quality concerns in Honolulu
PFAS from Red Hill fuel storage
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Naturally occurring minerals
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Pesticide residues
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What's in your Honolulu water report
Contaminant levels
Every detected contaminant in your Honolulu water system, compared to EPA limits and health guidelines.
Violation history
All EPA violations on record for water systems serving Honolulu, including health-based and monitoring violations.
Water quality grade
An A through F grade based on violation history, contaminant levels, and health guideline comparisons.
Filter recommendations
Which type of water filter will actually remove the contaminants found in your specific water system.
Check your Honolulu water now
Enter your ZIP code for a free water quality report specific to your water system in Honolulu, Hawaii.