Haleakala National Park
EPA ID: HI0000222 · 1,200 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Haleakala National Park (HI0000222): no drinking-water violations recorded since 2021. Haleakala National Park is listed without violations in federal records, across a service area of 1,200 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Haleakala National Park Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Haleakala National Park have a median household income of $105,942 and about 18,782 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 56% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Haleakala National Park'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.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Hawaii
System Overview
Haleakala National Park (EPA ID: HI0000222) is a community water system in Hawaii that serves approximately 1,200 people from groundwater sources.
This system serves ZIP code 96768 in Makawao.
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 | 2021-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
- 96768 - Makawao
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Haleakala National Park (HI0000222) on EPA.gov.
Frequently Asked Questions
Is Haleakala National Park water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Haleakala National Park 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 Haleakala National Park serve?
Haleakala National Park serves approximately 1,200 people across 1 ZIP code in Hawaii.
Where does Haleakala National Park get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Haleakala National Park Water Quality Report, HI. https://zipcheckup.com/water-system/hi0000222/
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author = {{ZipCheckup}},
title = {{Haleakala National Park Water Quality Report, HI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/hi0000222/}
}