COUNTY WATER-SYSTEM LEDGER
Hawaii, Hawaii
EPA’s September 2026 export lists 11 active community water systems serving Hawaii, Hawaii, with 1 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Hawaii, Hawaii
EPA associates 11 covered systems with Hawaii, Hawaii; their reported population-served values total 123,940 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| HiloHI0000101 | 39,477 | Ground water | No current violation flagged |
| North KonaHI0000131 | 29,581 | Ground water | Current monitoring/reporting flag |
| WaikoloaHI0000135 | 12,100 | Ground water | No current violation flagged |
| South KohalaHI0000130 | 9,612 | Surface water | No current violation flagged |
| South KonaHI0000132 | 6,512 | Ground water | No current violation flagged |
| Olaa-Mountain ViewHI0000112 | 6,467 | Ground water | No current violation flagged |
| North KohalaHI0000129 | 4,933 | Ground water | No current violation flagged |
| HainaHI0000161 | 4,563 | Ground water | No current violation flagged |
| Hawaii Volcanoes Nat.ParkHI0000146 | 4,201 | Ground water | No current violation flagged |
| Hawaiian BeachesHI0000117 | 3,546 | Ground water | No current violation flagged |
| Waiohinu-NaalehuHI0000108 | 2,948 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Hawaii, Hawaii
EPA classifies 11 systems serving Hawaii, Hawaii across 2 primary-source categories; Ground water is the largest category with 10 systems.
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.