Pahoa
EPA ID: HI0000111 · 1,885 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Pahoa (HI0000111): no drinking-water violations recorded since 2021. Nothing in the federal violation file is listed against Pahoa, a system that provides water to roughly 1,885 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Pahoa Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: A
Demographics of ZIP Codes Served
The ZIP codes associated with Pahoa have a median household income of $34,863 and about 14,225 residents live in those ZIP codes (Census; not the number of people this system supplies).
Environmental Justice Note: On average, 33% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Pahoa's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Hawaii
System Overview
Pahoa (EPA ID: HI0000111) is a community water system in Hawaii that serves approximately 1,885 people from groundwater sources.
This system serves ZIP code 96778 in Pahoa.
ZIP-Area Home Safety Context: A (100/100)
This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2022-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by HI or modeled from parcel and building-footprint data.
- 96778 - Pahoa
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Pahoa (HI0000111) on EPA.gov.
Frequently Asked Questions
Is Pahoa water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Pahoa in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Pahoa serve?
Pahoa serves approximately 1,885 people across 1 ZIP code in Hawaii.
Where does Pahoa get its water?
The primary water source is groundwater.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Pahoa Water Quality Report, HI. https://zipcheckup.com/water-system/hi0000111/
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author = {{ZipCheckup}},
title = {{Pahoa Water Quality Report, HI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/hi0000111/}
}