States / Hawaii / Drinking Water
Drinking Water Systems in Hawaii
118 community water systems serving about 1,507,181 people. 10 have a health-based violation on record since 2015.
SystemHealth-based violations (2015+)
WAIAWA CORRECTIONAL FACILITY · WAIPAHU · 444 served · surface water15
MOLOAA IRRIGATION COOPERATIVE · ANAHOLA · 100 served · groundwater15
MAUNALOA-KALUAKOI · MAUNALOA, MOLOKAI · 1,000 served · purchased groundwater6
POAMOHO · WAHIAWA · 25 served · groundwater6
JOINT BASE PEARL HARBOR-HICKAM · PEARL HARBOR · 65,230 served · groundwater3
MAKAWAO · MAKAWAO · 29,868 served · surface water3
THE QUEEN'S MEDICAL CENTER · DOWNTOWN HONOLULU · 3,440 served · groundwater3
WAIAHOLE · KAHANA VALLEY · 300 served · groundwater3
KEOPU WATER ASSOCIATION · KONA · 250 served · purchased groundwater2
VILLA ROSE · WAIALUA-HALEIWA · 30 served · groundwater2
HNL-WINDWARD-PEARL HARBOR · HONOLULU-WINDWARD-PEARLHARBOR · 631,389 served · groundwaternone on record
WAIPAHU-EWA-WAIANAE · WAIPAHU-EWA-WAIANAE · 217,479 served · groundwaternone on record
WAILUKU · WAILUKU · 74,511 served · surface waternone on record
MILILANI · MILILANI BWS · 50,573 served · groundwaternone on record
HILO · HILO · 39,477 served · groundwaternone on record
SCHOFIELD BARRACKS · Honolulu County · 37,920 served · groundwaternone on record
LIHUE-KAPAA · LIHUE-KAPAA · 34,854 served · surface waternone on record
NORTH KONA · NORTH KONA · 29,581 served · groundwaternone on record
WAHIAWA · Honolulu County · 23,348 served · groundwaternone on record
LAHAINA · LAHAINA · 20,065 served · surface waternone on record
MARINE CORPS BASE HAWAII · KANEOHE · 16,300 served · purchased groundwaternone on record
KALAHEO-KOLOA · KALAHEO · 12,660 served · groundwaternone on record
WAIKOLOA · WAIKOLOA (DHO) · 12,100 served · groundwaternone on record
WAIPIO HEIGHTS · WAIPIO · 11,516 served · groundwaternone on record
WAIALUA-HALEIWA · WAIALUA-HALEIWA · 9,996 served · groundwaternone on record
SOUTH KOHALA · SOUTH KOHALA · 9,612 served · surface waternone on record
KAANAPALI · KAANAPALI (DHO) · 8,000 served · groundwaternone on record
UPPER KULA · KULA · 7,686 served · surface waternone on record
FORT SHAFTER · Honolulu County · 7,067 served · groundwaternone on record
PRINCEVILLE · PRINCEVILLE (DHO) · 6,911 served · groundwaternone on record
SOUTH KONA · SOUTH KONA · 6,512 served · groundwaternone on record
NCTAMS EASTPAC · WAHIAWA · 6,470 served · groundwaternone on record
OLAA-MOUNTAIN VIEW · OLAA-MT.VIEW · 6,467 served · groundwaternone on record
ALIAMANU · SALT LAKE · 6,406 served · purchased groundwaternone on record
KEKAHA-WAIMEA · KEKAHA (DOW) · 5,998 served · groundwaternone on record
HANAPEPE-ELEELE · HANAPEPE-ELEELE (DOW) · 5,592 served · groundwaternone on record
LAIE WATER COMPANY · LAIE · 5,577 served · groundwaternone on record
TRIPLER ARMY MEDICAL CNTR · MOANALUA · 5,555 served · groundwaternone on record
BARBERS POINT · WAIPAHU-EWA-WAIANAE · 5,256 served · groundwaternone on record
NORTH KOHALA · NORTH KOHALA · 4,933 served · groundwaternone on record
WAIALEE-SUNSET BEACH · SUNSET BEACH · 4,916 served · groundwaternone on record
HAINA · HAINA · 4,563 served · groundwaternone on record
HAWAII VOLCANOES NAT.PARK · HVNP (DHO) · 4,201 served · groundwaternone on record
KAPALUA · KAPALUA (DHO) · 4,200 served · groundwaternone on record
KAMEHAMEHA SCHOOLS · KAPALAMA · 4,000 served · groundwaternone on record
KAUNAKAKAI · KAUNAKAKAI · 3,702 served · groundwaternone on record
HAWAIIAN BEACHES · HAWAIIAN SHORES DHO · 3,546 served · groundwaternone on record
LOWER KULA · KULA · 3,522 served · surface waternone on record
KILAUEA · KILAUEA (DOW) · 3,420 served · groundwaternone on record
LANAI CITY · LANAI · 3,200 served · groundwaternone on record
WAIOHINU-NAALEHU · WAIOHINU-NAALEHU · 2,948 served · groundwaternone on record
KAHUKU · KAHUKU · 2,730 served · groundwaternone on record
ANAHOLA · ANAHOLA · 2,473 served · groundwaternone on record
HOOLEHUA · HOOLEHUA · 2,400 served · groundwaternone on record
PAPAIKOU · PAPAIKOU · 2,203 served · groundwaternone on record
KAUPULEHU · KONA · 1,945 served · groundwaternone on record
LALAMILO · LALAMILO · 1,895 served · groundwaternone on record
PAHOA · PAHOA · 1,885 served · groundwaternone on record
DILLINGHAM AIRFIELD · MOKULEIA · 1,800 served · groundwaternone on record
PEPEEKEO · PEPEEKEO · 1,450 served · groundwaternone on record
HAWAIIAN SHORES · HAWAIIAN SHORES DHO · 1,360 served · groundwaternone on record
HANA · HANA · 1,284 served · groundwaternone on record
GAY & ROBINSON · KAUMAKANI · 1,271 served · groundwaternone on record
PAHALA · PAHALA · 1,226 served · groundwaternone on record
PACIFIC MISSILE RANGE FACILITY · PMRF HOUSING (DHO) · 1,200 served · groundwaternone on record
HALEAKALA NATIONAL PARK · KULA · 1,200 served · groundwaternone on record
LAUPAHOEHOE-KAPEHU · LAUPAHOEHOE · 1,169 served · groundwaternone on record
UALAPUE · UALAPUE · 1,119 served · groundwaternone on record
HOKU'ULA WATER SYSTEM · MAKAWAO · 1,000 served · groundwaternone on record
HAWAIIAN OCEAN VIEW ESTATES · KONA · 1,000 served · groundwaternone on record
KOHALA RANCH WATER CO. · KOHALA JOINT VENTURE · 850 served · groundwaternone on record
HAENA-WAINIHA · HAENA-WAINIHA · 833 served · groundwaternone on record
HANA WATER SYSTEMS - SOUTH · KEOLA HANA-HOTEL DHO · 816 served · groundwaternone on record
PAAUILO · PAAUILO · 716 served · groundwaternone on record
KUNIA VILLAGE · WAHIAWA · 650 served · groundwaternone on record
HONOMU · HONOMU · 645 served · groundwaternone on record
MAHANALUA NUI SUBDIVISON · MAHANALUA NUI · 606 served · groundwaternone on record
CAMP STOVER · WAHIAWA · 595 served · purchased groundwaternone on record
KAWELA PLANTATION · KAWELA · 553 served · groundwaternone on record
KUALAPUU · KUALAPUU · 500 served · groundwaternone on record
HANALEI · HANALEI (DOW) · 500 served · groundwaternone on record
KUKUIHAELE · KUKUIHAELE · 483 served · groundwaternone on record
NAPUU WATER INC. · PUUWAAWAA RANCH DHO · 468 served · groundwaternone on record
HAKALAU-WAILEA · HAKALAU-WAILEA · 402 served · groundwaternone on record
WAIALUA SUGAR PUMP 2 · WAIALUA-HALEIWA · 400 served · groundwaternone on record
ANAHOLA FARM LOTS · ANAHOLA FARM LOTS (DHO) · 385 served · groundwaternone on record
KALAE · MAKENA · 360 served · purchased groundwaternone on record
KALAPANA · KALAPANA (DWS) · 275 served · groundwaternone on record
KEANAE · KEANAE (DWS) · 270 served · groundwaternone on record
OOKALA (DWS) · OOKALA · 264 served · groundwaternone on record
KEALIA · KEALIA (DHO) · 260 served · groundwaternone on record
KONA WATER SERVICE COMPANY · KONA · 260 served · groundwaternone on record
NIULII · NIULII · 254 served · groundwaternone on record
PUNALU'U · PUNALUU (DHO) · 200 served · groundwaternone on record
KAWAIHAE UNIT #1 · KAWAIHAE · 193 served · purchased groundwaternone on record
KAHILI MOUNTAIN PARK · KAHILI MOUNTAIN PARK · 175 served · groundwaternone on record
ANINI · HANALEI (DOW) · 174 served · purchased groundwaternone on record
HANA WATER SYSTEMS - NORTH · KAELEKU AG PARK HANA · 160 served · groundwaternone on record
NINOLE · NINOLE · 151 served · groundwaternone on record
KAHAKULOA WATER CO. · KAHAKULOA HOMESTEAD · 150 served · groundwaternone on record
KALAUPAPA NHP · KALAUPAPA · 110 served · groundwaternone on record
NAHIKU · NAHIKU · 107 served · groundwaternone on record
WAIKI'I RANCH · WAIKII RANCH (DHO) · 102 served · groundwaternone on record
OLOWALU · OLOWALU · 100 served · groundwaternone on record
MAUNAOLU PLANTATION · HAIKU · 100 served · groundwaternone on record
DILLINGHAM RANCH · WAIALUA-HALEIWA · 100 served · groundwaternone on record
KAILUA · KAILUA MAUI · 90 served · groundwaternone on record
KIPU · HALEAKALA · 80 served · purchased groundwaternone on record
KULA NANI · KULA · 80 served · purchased surface waternone on record
WOOD VALLEY · PAHALA · 75 served · groundwaternone on record
KAHUKU AIR BASE · KAHUKU AIR BASE · 75 served · groundwaternone on record
PEPEEKEO WATER ASSOCIATION · PEPEEKEO · 60 served · purchased groundwaternone on record
WEST KUIAHA MEADOWS · HAIKU · 60 served · groundwaternone on record
WOODLANDS AT NUUANU · HONOLULU · 48 served · purchased groundwaternone on record
HONOKOHAU · LAHAINA · 42 served · purchased groundwaternone on record
BALDWIN RANCH ESTATES · MAKAWAO · 32 served · groundwaternone on record
MAUI HIGHLANDS · KIHEI · 26 served · groundwaternone on record
HAIKU TOWN WATER ASSOCIATION, INC. · HAIKU · 20 served · groundwaternone on record
Source: U.S. EPA Safe Drinking Water Information System (SDWIS). "Health-based" counts maximum-contaminant-level, treatment-technique and maximum-residual-disinfectant-level violations recorded since 2015. A violation on record — especially a resolved one — is not a statement about water quality today; contact the water system or your state drinking-water program for current information.