County · Hawaii
Kauai County, Hawaii: drinking water records
This overview covers 16 ZIP codes and 16 community water systems in Kauai County. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Lihue-Kapaa HI0000400 | 34,854 | 1,080 | 0 | 0 | 0 ppb |
| Kalaheo-Koloa HI0000434 | 12,660 | 540 | 0 | 0 | 0 ppb |
| Princeville HI0000428 | 6,911 | 120 | 0 | 0 | 0 ppb |
| Kekaha-Waimea HI0000406 | 5,998 | 360 | 0 | 0 | 0 ppb |
| Hanapepe-Eleele HI0000404 | 5,592 | 180 | 0 | 0 | 0 ppb |
| Kilauea HI0000407 | 3,420 | 60 | 0 | 0 | 0 ppb |
| Anahola HI0000401 | 2,473 | 0 | 0 | 0 | 0 ppb |
| Gay & Robinson HI0000417 | 1,271 | 0 | 0 | 0 | 0 ppb |
| Pacific Missile Range Facility HI0000430 | 1,200 | 0 | 0 | 0 | 0 ppb |
| Haena-Wainiha HI0000415 | 833 | 0 | 0 | 0 | 0 ppb |
| Hanalei HI0000403 | 500 | 0 | 0 | 0 | 0 ppb |
| Anahola Farm Lots HI0000432 | 385 | 0 | 0 | 0 | 0 ppb |
| Kealia HI0000423 | 260 | 0 | 0 | 0 | 0 ppb |
| Kahili Mountain Park HI0000422 | 175 | 0 | 0 | 0 | 0 ppb |
| Anini HI0000402 | 174 | 0 | 0 | 0 | 0 ppb |
| Moloaa Irrigation Cooperative HI0000437 | 100 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Kauai 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: 96769.
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.