County · Hawaii
Hawaii County, Hawaii: drinking water records
This overview covers 28 ZIP codes and 37 community water systems in Hawaii County. It also stands in for 3 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Hilo HI0000101 | 39,477 | 300 | 0 | 0 | 0 ppb |
| North Kona HI0000131 | 29,581 | 660 | 0 | 0 | 0 ppb |
| Waikoloa HI0000135 | 12,100 | 120 | 0 | 0 | 0 ppb |
| South Kohala HI0000130 | 9,612 | 120 | 0 | 0 | 0 ppb |
| South Kona HI0000132 | 6,512 | 240 | 0 | 0 | 0 ppb |
| Olaa-Mountain View HI0000112 | 6,467 | 120 | 0 | 0 | 0 ppb |
| North Kohala HI0000129 | 4,933 | 120 | 0 | 0 | 0 ppb |
| Haina HI0000161 | 4,563 | 180 | 0 | 0 | 0 ppb |
| Hawaii Volcanoes Nat.Park HI0000146 | 4,201 | 60 | 0 | 0 | 9.0 ppb |
| Hawaiian Beaches HI0000117 | 3,546 | 60 | 0 | 0 | 0 ppb |
| Kohala Ranch Water Co. HI0000151 | 850 | 60 | 0 | 0 | 10.8 ppb |
| Keopu Water Association HI0000168 | 250 | 0 | 0 | 1 | 0 ppb |
| Waiohinu-Naalehu HI0000108 | 2,948 | 0 | 0 | 0 | 0 ppb |
| Papaikou HI0000107 | 2,203 | 0 | 0 | 0 | 0 ppb |
| Kaupulehu HI0000163 | 1,945 | 0 | 0 | 0 | 0 ppb |
| Lalamilo HI0000160 | 1,895 | 0 | 0 | 0 | 0 ppb |
| Pahoa HI0000111 | 1,885 | 0 | 0 | 0 | 0 ppb |
| Pepeekeo HI0000106 | 1,450 | 0 | 0 | 0 | 0 ppb |
| Hawaiian Shores HI0000156 | 1,360 | 0 | 0 | 0 | 0 ppb |
| Pahala HI0000109 | 1,226 | 0 | 0 | 0 | 0 ppb |
| Laupahoehoe-Kapehu HI0000102 | 1,169 | 0 | 0 | 0 | 0 ppb |
| Hawaiian Ocean View Estates HI0000169 | 1,000 | 0 | 0 | 0 | 0 ppb |
| Paauilo HI0000134 | 716 | 0 | 0 | 0 | 0 ppb |
| Honomu HI0000105 | 645 | 0 | 0 | 0 | 0 ppb |
| Kukuihaele HI0000133 | 483 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Hawaii County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 96704, 96773, 96780.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.