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Public Water System
WAIOHINU-NAALEHU
PWSID HI0000108 · Hawaii · 2,948 people served
A
ExcellentWAIOHINU-NAALEHU is an EPA-regulated public water system in Hawaii (PWSID HI0000108). It serves an estimated 2,948 residents — a small town of customers — across 1 community across 1 ZIP code.
WAIOHINU-NAALEHU has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
2,948
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for WAIOHINU-NAALEHU over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
WAIOHINU-NAALEHU's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by WAIOHINU-NAALEHU
ZIP Codes Served
About this system
EPA records this system as PWSID HI0000108. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact WAIOHINU-NAALEHU directly or review their annual Consumer Confidence Report (CCR).
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