EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Honolulu, Hawaii

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems19active CWS · pop. 2,500+
Population served1,115,168reported total; may overlap
Current violation flag10.5%2 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Honolulu

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Hnl-Windward-Pearl HarborHI0000331631,389Ground waterNo current violation flagged
Waipahu-Ewa-WaianaeHI0000335217,479Ground waterNo current violation flagged
Joint Base Pearl Harbor-HickamHI000036065,230Ground waterOther current violation flag
MililaniHI000036750,573Ground waterNo current violation flagged
Schofield BarracksHI000034537,920Ground waterNo current violation flagged
WahiawaHI000033323,348Ground waterNo current violation flagged
Marine Corps Base HawaiiHI000035616,300Ground water purchasedNo current violation flagged
Waipio HeightsHI000033411,516Ground waterNo current violation flagged
Waialua-HaleiwaHI00003329,996Ground waterNo current violation flagged
Fort ShafterHI00003417,067Ground waterNo current violation flagged
Nctams EastpacHI00003576,470Ground waterNo current violation flagged
AliamanuHI00003376,406Ground water purchasedOther current violation flag
Laie Water CompanyHI00003255,577Ground waterNo current violation flagged
Tripler Army Medical CntrHI00003465,555Ground waterNo current violation flagged
Barbers PointHI00003555,256Ground waterNo current violation flagged
Waialee-Sunset BeachHI00003664,916Ground waterNo current violation flagged
Kamehameha SchoolsHI00003194,000Ground waterNo current violation flagged
The Queen'S Medical CenterHI00003123,440Ground waterNo current violation flagged
KahukuHI00003652,730Ground waterNo current violation flagged

02 / SOURCE MIX

Ground water17 systems · 1,092,462 served
Ground water purchased2 systems · 22,706 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.