CITY REPORT HI

Kahului, HI Home Safety: Home Safety 100/100

2 ZIP codes · 1 water system · Updated

ZipCheckup grade for Kahului: A.

No federal data flags a major home-safety concern for this ZIP.

EPA compliance records for Kahului tell a largely clear story: violation rates are low, health-based exceedances are uncommon, and the city's grade puts it well above average within HI.

How Kahului Compares

Kahului100/100
Hawaii avg100/100
National avg73/100

Data: EPA SDWIS

2
ZIP Codes
1
Water Systems
0
ZIPs with Violations
A · 100
Avg Safety Score
Zone 3
Radon Risk (Low)
$833K
Median Home Value
$3,300
Est. Remediation (0.4% of home value)

Kahului Water: The Quick Version

  • Estimated remediation: $3,300 per household.
  • CDC health risk index: 11.58.

Water Systems Serving Kahului

Across most of Kahului, HI, residential water comes from a single utility. That provider sets rates, manages infrastructure maintenance, and files compliance reports with the EPA on behalf of the households it serves. Federal tracking data shows 1 system on record, but one carries the bulk of the service load.

Overview

We track home safety data for 2 ZIP codes in Kahului, Hawaii (population ~25,889), covering 1 community water system serving approximately 74,511 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Home Safety Score

Average Home Safety Score for Kahului: A (100/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Kahului water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 3 (Low Risk)

  • Zone 1 (High): 0 ZIP codes
  • Zone 2 (Moderate): 0 ZIP codes
  • Zone 3 (Low): 2 ZIP codes

Areas with No Violations

ZIP Code Safety Score System Population
96732 A Wailuku 74,511

All ZIP Codes in Kahului

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Kahului

10.3%
Asthma (US: 9.8%)
12.2%
Diabetes (US: 10.4%)
14.9%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 10.3% ↑
Diabetes 12.2% ↑
Mental Health 14.9% ↑

Vertical line = national average. Above national · Below national

Kahului: Remediation Cost in Perspective

Property equity in Kahului runs well ahead of estimated remediation costs - a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.

Median Home Value
$832,700
Est. Remediation
$3,300
Remediation as % of home value 0.4%

Remediation costs in Kahului are relatively low compared to home values. The $2,200–$4,550 estimated range is a small fraction of median property value. Home values are 15% above the Hawaii average.

Historical Flood-Claim Evidence for Kahului

20
Total FEMA Flood Claims
$13,836
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Kahului contains 20 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $13,836. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$3,300</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Frequently Asked Questions

What does the Home Safety Score mean for Kahului, HI?
Kahului has an average Home Safety Score of 100/100 (Grade A) under model 4.0.0. The score combines EPA SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the PFAS MCL screen, EPA radon zone, and annual EPA AQI, and is published only when all required domains are observed. The available EPA record reports no violations for ZIP codes with reported counts. Check individual ZIP code reports for component details.
How does Kahului compare to Hawaii average?
Kahului has an average Home Safety Score of 100/100, which is above the Hawaii state average of 100/100 for the same model series.
How many water systems serve Kahului?
Kahului is served by 1 public water system across 2 ZIP codes, serving approximately 25,889 people.
How much does it cost to fix water issues in Kahului?
Estimated remediation costs in Kahului average $3,300 per household, ranging from $2,200 to $4,550. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesHawaii → Kahului, HI

How to cite this page

APA ZipCheckup. (2026). Kahului, HI Home Safety: Home Safety 100/100. https://zipcheckup.com/cities/hi/kahului/
BibTeX
@misc{zipcheckup-cities-hi-kahului,
  author = {{ZipCheckup}},
  title  = {{Kahului, HI Home Safety: Home Safety 100/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/hi/kahului/}
}

Page version: August 2026.

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