Honomu
EPA ID: HI0000105 · 645 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for Honomu (HI0000105): no EPA violations recorded in the last five years. Five clean years on EPA record - Honomu, 645 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for Honomu Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Honomu serves a community with a median household income of $79,698 and an estimated 3,903 residents across its service area. Approximately 61% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 33% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. 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?
Honomu's water is pumped from underground aquifers. 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
Honomu (EPA ID: HI0000105) is a community water system in Hawaii that serves approximately 645 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Honomu (HI0000105) on EPA.gov.
Frequently Asked Questions
Is Honomu water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Honomu 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 Honomu serve?
Honomu serves approximately 645 people across 3 ZIP codes in Hawaii.
Where does Honomu get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Honomu Water Quality Report, HI. https://zipcheckup.com/water-system/hi0000105/
@misc{zipcheckup-water-system-hi0000105,
author = {{ZipCheckup}},
title = {{Honomu Water Quality Report, HI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/hi0000105/}
}