Water Quality in Honolulu, HI (96858)

EPA violation data for public water systems serving ZIP code 96858.

No Health-Based Violations

None of the 5 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There is1 monitoring/reporting violation (missed testing deadlines), all resolved.

Better than 29% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

323

Population

5

Water Systems

1

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (5)

Hnl-Windward-Pearl Harbor

Groundwater 631,389 people served
0 violations

Waipahu-Ewa-Waianae

Groundwater 217,479 people served
0 violations

Joint Base Pearl Harbor-Hickam

Groundwater 65,230 people served
1 violation (5yr)
Lead tested: 0 ppb (limit: 15 ppb)

Mililani

Groundwater 50,573 people served
0 violations

Board Of Water Supply

Groundwater 47,500 people served
0 violations

Contaminants Found

Public NoticeMonitoring
1 violation
Has active

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

Honolulu (96858) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1, most of which are monitoring/reporting issues.

Fewer violations 29th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.

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