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Hawaii Tap Water Quality

EPA water quality data for 119 community water systems serving 1,507,224+ people in Hawaii. Click any system to see violations, lead testing results, and a safety grade.

HNL-WINDWARD-PEARL HARBOR HONOLULU, HI · 631,389 people · Groundwater WAIPAHU-EWA-WAIANAE HONOLULU, HI · 217,479 people · Groundwater WAILUKU WAILUKU, HI · 74,511 people · Surface Water JOINT BASE PEARL HARBOR-HICKAM JBPPH, HI · 65,230 people · Groundwater MILILANI HONOLULU, HI · 50,573 people · Groundwater HILO HILO, HI · 39,477 people · Groundwater SCHOFIELD BARRACKS SCHOFIELD BARRACKS, HI · 37,920 people · Groundwater LIHUE-KAPAA LIHUE, HI · 34,854 people · Surface Water MAKAWAO WAILUKU, HI · 29,868 people · Surface Water NORTH KONA HILO, HI · 29,581 people · Groundwater WAHIAWA HONOLULU, HI · 23,348 people · Groundwater LAHAINA WAILUKU, HI · 20,065 people · Surface Water MARINE CORPS BASE HAWAII KANEOHE BAY, HI · 16,300 people · Groundwater Purchased KALAHEO-KOLOA LIHUE, HI · 12,660 people · Groundwater WAIKOLOA WAIKOLOA, HI · 12,100 people · Groundwater WAIPIO HEIGHTS HONOLULU, HI · 11,516 people · Groundwater WAIALUA-HALEIWA HONOLULU, HI · 9,996 people · Groundwater SOUTH KOHALA HILO, HI · 9,612 people · Surface Water KAANAPALI WAIKOLOA, HI · 8,000 people · Groundwater UPPER KULA WAILUKU, HI · 7,686 people · Surface Water FORT SHAFTER SCHOFIELD BARRACKS, HI · 7,067 people · Groundwater PRINCEVILLE PRINCEVILLE, HI · 6,911 people · Groundwater SOUTH KONA HILO, HI · 6,512 people · Groundwater NCTAMS EASTPAC JBPPH, HI · 6,470 people · Groundwater OLAA-MOUNTAIN VIEW HILO, HI · 6,467 people · Groundwater ALIAMANU SCHOFIELD BARRACKS, HI · 6,406 people · Groundwater Purchased KEKAHA-WAIMEA LIHUE, HI · 5,998 people · Groundwater HANAPEPE-ELEELE LIHUE, HI · 5,592 people · Groundwater LAIE WATER COMPANY LAIE, HI · 5,577 people · Groundwater TRIPLER ARMY MEDICAL CNTR SCHOFIELD BARRACKS, HI · 5,555 people · Groundwater BARBERS POINT WAIKOLOA, HI · 5,256 people · Groundwater NORTH KOHALA HILO, HI · 4,933 people · Groundwater WAIALEE-SUNSET BEACH HONOLULU, HI · 4,916 people · Groundwater HAINA HILO, HI · 4,563 people · Groundwater HAWAII VOLCANOES NAT.PARK HAWAII NATIONAL PARK, HI · 4,201 people · Groundwater KAPALUA KAPALUA, HI · 4,200 people · Groundwater KAMEHAMEHA SCHOOLS HONOLULU, HI · 4,000 people · Groundwater KAUNAKAKAI WAILUKU, HI · 3,702 people · Groundwater HAWAIIAN BEACHES PAHOA, HI · 3,546 people · Groundwater LOWER KULA WAILUKU, HI · 3,522 people · Surface Water THE QUEEN'S MEDICAL CENTER HONOLULU, HI · 3,440 people · Groundwater KILAUEA LIHUE, HI · 3,420 people · Groundwater LANAI CITY LANAI CITY, HI · 3,200 people · Groundwater WAIOHINU-NAALEHU HILO, HI · 2,948 people · Groundwater KAHUKU HONOLULU, HI · 2,730 people · Groundwater ANAHOLA LIHUE, HI · 2,473 people · Groundwater HOOLEHUA KAUNAKAKAI, HI · 2,400 people · Groundwater PAPAIKOU HILO, HI · 2,203 people · Groundwater KAUPULEHU KAILUA-KONA, HI · 1,945 people · Groundwater LALAMILO HILO, HI · 1,895 people · Groundwater PAHOA HILO, HI · 1,885 people · Groundwater DILLINGHAM AIRFIELD HONOLULU, HI · 1,800 people · Groundwater PEPEEKEO HILO, HI · 1,450 people · Groundwater HAWAIIAN SHORES PAHOA, HI · 1,360 people · Groundwater HANA WAILUKU, HI · 1,284 people · Groundwater GAY & ROBINSON KAUMAKANI, HI · 1,271 people · Groundwater PAHALA HILO, HI · 1,226 people · Groundwater HALEAKALA NATIONAL PARK MAKAWAO, HI · 1,200 people · Groundwater PACIFIC MISSILE RANGE FACILITY JBPPH, HI · 1,200 people · Groundwater LAUPAHOEHOE-KAPEHU HILO, HI · 1,169 people · Groundwater UALAPUE WAILUKU, HI · 1,119 people · Groundwater HAWAIIAN OCEAN VIEW ESTATES HILO, HI · 1,000 people · Groundwater MAUNALOA-KALUAKOI MAUNALOA, HI · 1,000 people · Groundwater Purchased HOKU'ULA WATER SYSTEM HI · 1,000 people · Groundwater KOHALA RANCH WATER CO. KAMUELA, HI · 850 people · Groundwater HAENA-WAINIHA LIHUE, HI · 833 people · Groundwater HANA WATER SYSTEMS - SOUTH HANA, HI · 816 people · Groundwater PAAUILO HILO, HI · 716 people · Groundwater KUNIA VILLAGE KUNIA, HI · 650 people · Groundwater HONOMU HILO, HI · 645 people · Groundwater MAHANALUA NUI SUBDIVISON KAHULUI, HI · 606 people · Groundwater CAMP STOVER JBPPH, HI · 595 people · Groundwater Purchased KAWELA PLANTATION KAUNAKAKAI, HI · 553 people · Groundwater KUALAPUU MAUNALOA, HI · 500 people · Groundwater HANALEI LIHUE, HI · 500 people · Groundwater KUKUIHAELE HILO, HI · 483 people · Groundwater NAPUU WATER INC. KAILUA KONA, HI · 468 people · Groundwater WAIAWA CORRECTIONAL FACILITY PEARL CITY, HI · 444 people · Surface Water HAKALAU-WAILEA HILO, HI · 402 people · Groundwater WAIALUA SUGAR PUMP 2 WAHIAWA, HI · 400 people · Groundwater ANAHOLA FARM LOTS LIHUE, HI · 385 people · Groundwater KALAE WAILUKU, HI · 360 people · Groundwater Purchased WAIAHOLE HONOLULU, HI · 300 people · Groundwater KALAPANA HILO, HI · 275 people · Groundwater KEANAE WAILUKU, HI · 270 people · Groundwater OOKALA (DWS) HILO, HI · 264 people · Groundwater KONA WATER SERVICE COMPANY WAIKOLOA, HI · 260 people · Groundwater KEALIA KALAHEO, HI · 260 people · Groundwater NIULII HILO, HI · 254 people · Groundwater KEOPU WATER ASSOCIATION HOLUALOA, HI · 250 people · Groundwater Purchased PUNALU'U HONOLULU, HI · 200 people · Groundwater KAWAIHAE UNIT #1 KAMUELA, HI · 193 people · Groundwater Purchased KAHILI MOUNTAIN PARK KOLOA, HI · 175 people · Groundwater ANINI LIHUE, HI · 174 people · Groundwater Purchased HANA WATER SYSTEMS - NORTH HANA, HI · 160 people · Groundwater NINOLE HILO, HI · 151 people · Groundwater KAHAKULOA WATER CO. WAILUKU, HI · 150 people · Groundwater KALAUPAPA NHP KALAUPAPA, HI · 110 people · Groundwater NAHIKU WAILUKU, HI · 107 people · Groundwater WAIKI'I RANCH KAMUELA, HI · 102 people · Groundwater OLOWALU KAHULUI, HI · 100 people · Groundwater MAUNAOLU PLANTATION WAILUKU, HI · 100 people · Groundwater DILLINGHAM RANCH BEVERLY HILLS, CA · 100 people · Groundwater MOLOAA IRRIGATION COOPERATIVE ANAHOLA, HI · 100 people · Groundwater KAILUA PUUNENE, HI · 90 people · Groundwater KIPU MAUNALOA, HI · 80 people · Groundwater Purchased KULA NANI WAILUKU, HI · 80 people · Surface Water Purchased WOOD VALLEY PAHALA, HI · 75 people · Groundwater KAHUKU AIR BASE KAHUKU, HI · 75 people · Groundwater PEPEEKEO WATER ASSOCIATION HILO, HI · 60 people · Groundwater Purchased WEST KUIAHA MEADOWS WAILUKU, HI · 60 people · Groundwater WOODLANDS AT NUUANU HONOLULU, HI · 48 people · Groundwater Purchased KIPAPA ACRES C.P.R. AIEA, HI · 43 people · Groundwater HONOKOHAU WAILUKU, HI · 42 people · Groundwater Purchased BALDWIN RANCH ESTATES PUKALANI, HI · 32 people · Groundwater VILLA ROSE WAILUKU, HI · 30 people · Groundwater MAUI HIGHLANDS WAILUKU, HI · 26 people · Groundwater POAMOHO HONOLULU, HI · 25 people · Groundwater HAIKU TOWN WATER ASSOCIATION, INC. KAHULUI, HI · 20 people · Groundwater