MyCleanWater

Honolulu, Hawaii Water Quality Report

Water quality data for 17 water systems serving 961,904 people.

65
Fair
out of 100

Water Source

17
Water Systems
962K
People Served
Ground water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
PFHxS0.003 0.010 ug/L0.001 ug/L(EWG)
30%
Within limit
PFPeA0.003 No federal limit1000.0 ug/L(EWG)
0%
Below guideline

Recommended Water Filters

Based on the contaminants detected in your water supply, these filtration systems are recommended:

Reverse Osmosis (RO)

Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.

Up to 99% PFAS removal

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Compliance & Violations

Active Violations (27)

4G

Oct 17, 2024

minor

2E

Oct 17, 2024

critical

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Resolved Violations (274)

34

Feb 1, 2020

moderate

34

Feb 1, 2020

moderate

34

Feb 1, 2020

moderate

1A

Jan 1, 2020 — Jan 31, 2020

critical

1A

Jan 1, 2020 — Jan 31, 2020

critical

+ 269 more resolved violations

Frequently Asked Questions

Is Honolulu tap water safe to drink?

Honolulu's water meets all EPA maximum contaminant levels. However, 2 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Honolulu tap water?

2 contaminants have been detected in Honolulu's water supply across 17 water systems. See the full contaminant table above for details.

How can I improve my water quality in Honolulu?

Install a water filter rated for the specific contaminants found in Honolulu's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.

Does Honolulu have any water quality violations?

Yes, Honolulu currently has 27 active violations. See the violations section above for details.