Hawaii water providers

Find published drinking-water records, providers, and official agency resources for Hawaii. Review sources, sample dates, and coverage.

Official drinking-water resources

• State of Hawaii - Department of Health - Safe Drinking Water Branch

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

135 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• Hnl-Windward-Pearl HarborHI0000331 · CWS · Population served: 631,389
• Waipahu-Ewa-WaianaeHI0000335 · CWS · Population served: 217,479
• WailukuHI0000212 · CWS · Population served: 74,511
• Joint Base Pearl Harbor-HickamHI0000360 · CWS · Population served: 65,230
• MililaniHI0000367 · CWS · Population served: 50,573
• HiloHI0000101 · CWS · Population served: 39,477
• Schofield BarracksHI0000345 · CWS · Population served: 37,920
• Lihue-KapaaHI0000400 · CWS · Population served: 34,854
• MakawaoHI0000213 · CWS · Population served: 29,868
• North KonaHI0000131 · CWS · Population served: 29,581
• WahiawaHI0000333 · CWS · Population served: 23,348
• LahainaHI0000214 · CWS · Population served: 20,065
• Marine Corps Base HawaiiHI0000356 · CWS · Population served: 16,300
• Kalaheo-KoloaHI0000434 · CWS · Population served: 12,660
• WaikoloaHI0000135 · CWS · Population served: 12,100
• Waipio HeightsHI0000334 · CWS · Population served: 11,516
• Waialua-HaleiwaHI0000332 · CWS · Population served: 9,996
• South KohalaHI0000130 · CWS · Population served: 9,612
• KaanapaliHI0000205 · CWS · Population served: 8,000
• Upper KulaHI0000215 · CWS · Population served: 7,686
• Fort ShafterHI0000341 · CWS · Population served: 7,067
• PrincevilleHI0000428 · CWS · Population served: 6,911
• South KonaHI0000132 · CWS · Population served: 6,512
• Nctams EastpacHI0000357 · CWS · Population served: 6,470
• Olaa-Mountain ViewHI0000112 · CWS · Population served: 6,467
• AliamanuHI0000337 · CWS · Population served: 6,406
• Kekaha-WaimeaHI0000406 · CWS · Population served: 5,998
• Hanapepe-EleeleHI0000404 · CWS · Population served: 5,592
• Laie Water CompanyHI0000325 · CWS · Population served: 5,577
• Tripler Army Medical CntrHI0000346 · CWS · Population served: 5,555
• Barbers PointHI0000355 · CWS · Population served: 5,256
• North KohalaHI0000129 · CWS · Population served: 4,933
• Waialee-Sunset BeachHI0000366 · CWS · Population served: 4,916
• HainaHI0000161 · CWS · Population served: 4,563
• Hawaii Volcanoes Nat.ParkHI0000146 · CWS · Population served: 4,201
• KapaluaHI0000204 · CWS · Population served: 4,200
• Kamehameha SchoolsHI0000319 · CWS · Population served: 4,000
• KaunakakaiHI0000234 · CWS · Population served: 3,702
• Hawaiian BeachesHI0000117 · CWS · Population served: 3,546
• Lower KulaHI0000247 · CWS · Population served: 3,522
• The Queen'S Medical CenterHI0000312 · CWS · Population served: 3,440
• KilaueaHI0000407 · CWS · Population served: 3,420
• Lanai CityHI0000237 · CWS · Population served: 3,200
• Waiohinu-NaalehuHI0000108 · CWS · Population served: 2,948
• KahukuHI0000365 · CWS · Population served: 2,730
• AnaholaHI0000401 · CWS · Population served: 2,473
• HoolehuaHI0000230 · CWS · Population served: 2,400
• PapaikouHI0000107 · CWS · Population served: 2,203
• KaupulehuHI0000163 · CWS · Population served: 1,945
• LalamiloHI0000160 · CWS · Population served: 1,895
• PahoaHI0000111 · CWS · Population served: 1,885
• Dillingham AirfieldHI0000338 · CWS · Population served: 1,800
• PepeekeoHI0000106 · CWS · Population served: 1,450
• Hawaiian ShoresHI0000156 · CWS · Population served: 1,360
• HanaHI0000217 · CWS · Population served: 1,284
• Gay & RobinsonHI0000417 · CWS · Population served: 1,271
• PahalaHI0000109 · CWS · Population served: 1,226
• Haleakala National ParkHI0000222 · CWS · Population served: 1,200
• Pacific Missile Range FacilityHI0000430 · CWS · Population served: 1,200
• Laupahoehoe-KapehuHI0000102 · CWS · Population served: 1,169
• UalapueHI0000233 · CWS · Population served: 1,119
• Hawaiian Ocean View EstatesHI0000169 · CWS · Population served: 1,000
• Hoku'Ula Water SystemHI0000267 · CWS · Population served: 1,000
• Maunaloa-KaluakoiHI0000231 · CWS · Population served: 1,000
• Kohala Ranch Water Co.HI0000151 · CWS · Population served: 850
• Haena-WainihaHI0000415 · CWS · Population served: 833
• Hana Water Systems - SouthHI0000201 · CWS · Population served: 816
• PaauiloHI0000134 · CWS · Population served: 716
• Kunia VillageHI0000303 · CWS · Population served: 650
• HonomuHI0000105 · CWS · Population served: 645
• Mahanalua Nui SubdivisonHI0000251 · CWS · Population served: 606
• Camp StoverHI0000354 · CWS · Population served: 595
• Kawela PlantationHI0000248 · CWS · Population served: 553
• HanaleiHI0000403 · CWS · Population served: 500
• KualapuuHI0000229 · CWS · Population served: 500
• KukuihaeleHI0000133 · CWS · Population served: 483
• Napuu Water Inc.HI0000150 · CWS · Population served: 468
• Waiawa Correctional FacilityHI0000348 · CWS · Population served: 444
• Hakalau-WaileaHI0000154 · CWS · Population served: 402
• Waialua Sugar Pump 2HI0000309 · CWS · Population served: 400
• Anahola Farm LotsHI0000432 · CWS · Population served: 385
• KalaeHI0000235 · CWS · Population served: 360
• WaiaholeHI0000368 · CWS · Population served: 300
• KalapanaHI0000110 · CWS · Population served: 275
• KeanaeHI0000219 · CWS · Population served: 270
• Ookala (DWS)HI0000104 · CWS · Population served: 264
• KealiaHI0000423 · CWS · Population served: 260
• Kona Water Service CompanyHI0000165 · CWS · Population served: 260
• NiuliiHI0000139 · CWS · Population served: 254
• Keopu Water AssociationHI0000168 · CWS · Population served: 250
• Punalu'UHI0000114 · CWS · Population served: 200
• Kawaihae Unit #1HI0000164 · CWS · Population served: 193
• Kahili Mountain ParkHI0000422 · CWS · Population served: 175
• AniniHI0000402 · CWS · Population served: 174
• Hana Water Systems - NorthHI0000243 · CWS · Population served: 160
• NinoleHI0000103 · CWS · Population served: 151
• Kahakuloa Water Co.HI0000249 · CWS · Population served: 150
• Kalaupapa NhpHI0000239 · CWS · Population served: 110
• NahikuHI0000220 · CWS · Population served: 107
• Waiki'I RanchHI0000162 · CWS · Population served: 102