Honolulu-Windward-Pearl Harbor (HI) Water Quality

Honolulu-Windward-Pearl Harbor is a large public water system in EPA region 9 that provides tap water for the 96701, 96730, 96744, 96782, 96813 - 96819, 96822, 96826 zip codes. It has 139 facilities where the water supply was tested for 82 chemical contaminants that impact tap water quality and human health.

The maximum reported level of 1-butanol was 12.3 µg/L. The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.979 µg/L. The maximum reported level of Manganese was 1.64 µg/L. There were 3 contamintants found in the Honolulu-Windward-Pearl Harbor water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (99)

1,2,3-trichloropropane (99)

1,3-butadiene (99)

1,4-dioxane (99)

1-butanol (102)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (90)

17-alpha-ethynylestradiol (99)

17-beta-estradiol (99)

1H,1H,2H,2H-perfluorodecane sulfonic acid (90)

1H,1H,2H,2H-perfluorohexane sulfonic acid (90)

1H,1H,2H,2H-perfluorooctane sulfonic acid (90)

2,4-dinitrotoluene (143)

2,6-dinitrotoluene (143)

2-methoxyethanol (102)

2-propen-1-ol (Allyl Alcohol) (102)

4,4'-dichloro dichlorophenyl ethylene (DDE) (143)

4,8-dioxa-3H-perfluorononanoic acid (90)

4-androstene-3,17-dione (99)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (90)

alpha-hexachlorocyclohexane (102)

bromochloromethane (Halon 1011) (99)

bromomethane (99)

Butylated Hydroxyanisole (102)

chlorate (109)

chlorodifluoromethane (HCFC-22) (99)

chloromethane (99)

chlorpyrifos (102)

chromium (109)

chromium-6 (109)

cobalt (109)

dimethipin (102)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (144)

equilin (99)

estriol (99)

estrone (99)

ethoprop (102)

Germanium (103)

HAA5 (five regulated haloacetic acids) (10)

HAA6Br (six brominated haloacetic acids) (10)

HAA9 (nine haloacetic acids) (10)

hexafluoropropylene oxide dimer acid (GenX) (90)

lithium (90)

Manganese (103)

methyl-tertiary-butyl-ether (MTBE) (144)

molinate (143)

molybdenum (109)

N-ethyl perfluorooctanesulfonamidoacetic acid (90)

N-methyl perfluorooctanesulfonamidoacetic acid (90)

nitrobenzene (144)

nonafluoro-3,6-dioxaheptanoic acid (90)

o-toluidine (102)

oxyfluorfen (102)

perchlorate (144)

perfluoro(2-ethoxyethane)sulfonic acid (90)

perfluoro-3-methoxypropanoic acid (90)

perfluoro-4-methoxybutanoic acid (90)

perfluorobutanesulfonic acid (189)

perfluorobutanoic acid (90)

perfluorodecanoic acid (90)

perfluorododecanoic acid (90)

perfluoroheptanesulfonic acid (90)

perfluoroheptanoic acid (189)

perfluorohexanesulfonic acid (189)

perfluorohexanoic acid (90)

perfluorononanoic acid (189)

perfluorooctanesulfonic acid (189)

perfluorooctanoic acid (189)

perfluoropentanesulfonic acid (90)

perfluoropentanoic acid (90)

perfluorotetradecanoic acid (90)

perfluorotridecanoic acid (90)

perfluoroundecanoic acid (90)

profenofos (102)

quinoline (102)

s-ethyl-dipropylthiocarbamate (EPTC) (143)

strontium (109)

tebuconazole (102)

terbacil (143)

testosterone (99)

Total Permethrin (102)

tribufos (102)

vanadium (109)

Sampling Facilities

Manoa Well 2
Ground Water (GW)

Manoa Well 2 post Cl2Entry Point to the Distribution System (EP)

Wailupe Wells
Ground Water (GW)

Wailupe Wells post Cl2Entry Point to the Distribution System (EP)

Kalihi Shaft
Ground Water (GW)

Kalihi ShaftEntry Point to the Distribution System (EP)

Palolo Well 1847-01
Ground Water (GW)

Palolo Well post Cl2Entry Point to the Distribution System (EP)

Manoa Tunnel 3 1947-02
Ground Water (GW)

Manoa Tunnel post Cl2Entry Point to the Distribution System (EP)

Pearl City Shaft 2458-01
Ground Water (GW)

Pearl City Shaft post Cl2Entry Point to the Distribution System (EP)

Pearl City Well 3 Pump 1(2557-03)
Ground Water (GW)

Pearl City Well 3 post Cl2Entry Point to the Distribution System (EP)

Wilder Wells
Ground Water (GW)

Wilder Wells post Cl2Entry Point to the Distribution System (EP)

Haiku Tunnel & Well
Ground Water (GW)

Haiku Tunnel & Well post Cl2Entry Point to the Distribution System (EP)

Kahaluu Tunnel & Well
Ground Water (GW)

Kahaluu Tunnel & Well post Cl2Entry Point to the Distribution System (EP)

Kahana Wells
Ground Water (GW)

Kahana Wells post Cl2Entry Point to the Distribution System (EP)

Kalauoao Wells
Ground Water (GW)

Kalauao Wells post Cl2Entry Point to the Distribution System (EP)

Kalihi High Service
Ground Water (GW)

Kalihi High Service post Cl2Entry Point to the Distribution System (EP)

Kalihi Low Service
Ground Water (GW)

Kalihi Low Service post Cl2Entry Point to the Distribution System (EP)

Kaonohi Wells 1
Ground Water (GW)

Kaonohi Wells 1 post Cl2Entry Point to the Distribution System (EP)

Luluku Tunnel & Well
Ground Water (GW)

Luluku Tunnel & Well post Cl2Entry Point to the Distribution System (EP)

Newtown Wells
Ground Water (GW)

Newtown Wells post Cl2Entry Point to the Distribution System (EP)

Pearl City Wells 1
Ground Water (GW)

Pearl City Wells 1 post Cl2Entry Point to the Distribution System (EP)

Pearl City Wells 2
Ground Water (GW)

Pearl City Wells 2 post Cl2Entry Point to the Distribution System (EP)

Punaluu Wells 2
Ground Water (GW)

Punaluu Wells 2 post Cl2Entry Point to the Distribution System (EP)

Punanani Wells
Ground Water (GW)

Punanani Wells post Cl2Entry Point to the Distribution System (EP)

Waihee Tunnel & Incline Wells
Ground Water (GW)

Waihee Tunnel & Incline Wells post Cl2Entry Point to the Distribution System (EP)

Waimanalo Tunnels
Ground Water (GW)

Waimanalo Tunnels post Cl2Entry Point to the Distribution System (EP)

Waimanalo Wells 2
Ground Water (GW)

Waimanalo Wells 2 post Cl2Entry Point to the Distribution System (EP)

Kaluanui Wells
Ground Water (GW)

Kaluanui Wells post Cl2Entry Point to the Distribution System (EP)

Kuou Wells 1
Ground Water (GW)

Kuou Wells 1 post Cl2Entry Point to the Distribution System (EP)

Kuou Wells 2
Ground Water (GW)

Kuou Wells 2 post Cl2Entry Point to the Distribution System (EP)

Maakua Well
Ground Water (GW)

Maakua Well post Cl2Entry Point to the Distribution System (EP)

Hauula Well
Ground Water (GW)

Hauula Well post Cl2Entry Point to the Distribution System (EP)

Beretania High Service
Ground Water (GW)

Beretania High Service post Cl2Entry Point to the Distribution System (EP)

Beretania Low Service
Ground Water (GW)

Beretania Low Service post Cl2Entry Point to the Distribution System (EP)

Kaimuki High Service
Ground Water (GW)

Kaimuki High Service post Cl2Entry Point to the Distribution System (EP)

Kaimuki Low Service
Ground Water (GW)

Kaimuki Low Service post Cl2Entry Point to the Distribution System (EP)

Kuliouou Well
Ground Water (GW)

Kuliouou Well post Cl2Entry Point to the Distribution System (EP)

Manana Wells
Ground Water (GW)

Manana Wells post Cl2Entry Point to the Distribution System (EP)

Waiau Wells
Ground Water (GW)

Waiau Wells post Cl2Entry Point to the Distribution System (EP)

Kaahumanu Wells
Ground Water (GW)

Kaahumanu Wells post Cl2Entry Point to the Distribution System (EP)

Heco Waiau Wells
Ground Water (GW)

Heco Waiau Wells post Cl2Entry Point to the Distribution System (EP)

Kapalama Wells
Ground Water (GW)

Kapalama Wells post Cl2Entry Point to the Distribution System (EP)

Moanalua Wells
Ground Water (GW)

Moanalua Wells post Cl2Entry Point to the Distribution System (EP)

Kaamilo Wells
Ground Water (GW)

Kaamilo WellSEntry Point to the Distribution System (EP)

Aiea Gulch Wells
Ground Water (GW)

Aiea Gulch Wells P2-Post CL2Entry Point to the Distribution System (EP)

Kuou Wells 3
Ground Water (GW)

Kuou Wells 3 post CL2Entry Point to the Distribution System (EP)

Aina Koa Wells 2
Ground Water (GW)

Aina Koa Wells 2 post Cl2Entry Point to the Distribution System (EP)

Waialae Iki Well
Ground Water (GW)

WAIALAE IKI WELL Post Cl2Entry Point to the Distribution System (EP)

Palolo Tunnel 1946-01
Ground Water (GW)

Palolo Tunnel post Cl2Entry Point to the Distribution System (EP)

Aiea Wells
Ground Water (GW)

Aiea Wells post Cl2Entry Point to the Distribution System (EP)

Aiea Gulch Wells
Ground Water (GW)

Aiea Gulch WellsP1-Post Cl2Entry Point to the Distribution System (EP)

Halawa Wells
Ground Water (GW)

Halawa Wells post Cl2Entry Point to the Distribution System (EP)

Punaluu Wells 3
Ground Water (GW)

Punaluu Wells 3 post Cl2Entry Point to the Distribution System (EP)

Aina Koa Wells 1
Ground Water (GW)

Aina Koa Wells 1 post Cl2Entry Point to the Distribution System (EP)

Halawa Shaft
Ground Water (GW)

Halawa Shaft post Cl2Entry Point to the Distribution System (EP)

Waimanalo Well 3
Ground Water (GW)

Waimanalo Well 3 post Cl2Entry Point to the Distribution System (EP)

PC Highlands School Elementary
Ground Water (GW)

PC Highlands School ElementaryDistribution System (DS)
3631 Kalihi StreeetMaximum Residence Time (MR)
Makiki State ForestryMaximum Residence Time (MR)
4625 Sierra Drive Maunalani ParkMaximum Residence Time (MR)
Hawaii Kai Fire StationMaximum Residence Time (MR)
Kahuluu Fire StationMaximum Residence Time (MR)

Hawaii Kai Fire Station
Ground Water (GW)

Hawaii Kai Fire StationDistribution System (DS)

Moanalua Gardens
Ground Water (GW)

Moanalua GardensDistribution System (DS)

Kahaluu Fire Station
Ground Water (GW)

Kahaluu Fire StationDistribution System (DS)

Kalihi 614 Reservoir
Ground Water (GW)

Kalihi 614 ReservoirDistribution System (DS)

Iolekaa Well 2459-01
Ground Water (GW)

Ioleka Well Post Cl2Entry Point to the Distribution System (EP)

KALIHI SHAFT 2052-08
Ground Water (GW)

KALIHI SHAFT 2052-08UK (UK)

AINAKOA 1 1746-01
Ground Water (GW)

AINAKOA 1 1746-01UK (UK)

PALOLO 1847-01
Ground Water (GW)

PALOLO 1847-01UK (UK)

WILDER 3 1849-13
Ground Water (GW)

WILDER 3 1849-13UK (UK)

WILDER 1 1849-14
Ground Water (GW)

WILDER 1 1849-14UK (UK)

WILDER 4 1849-15
Ground Water (GW)

WILDER 4 1849-15UK (UK)

WILDER 2 1849-16
Ground Water (GW)

WILDER 2 1849-16UK (UK)

WAIMANALO II 1943-01
Ground Water (GW)

WAIMANALO II 1943-01UK (UK)

PALOLO TUNNEL 1946-01
Ground Water (GW)

PALOLO TUNNEL 1946-01UK (UK)

MANOA TUNNEL III 1947-02
Ground Water (GW)

MANOA TUNNEL III 1947-02UK (UK)

MANOA II 1948-01
Ground Water (GW)

MANOA II 1948-01UK (UK)

MOANALUA PUMP 3 2153-12
Ground Water (GW)

MOANALUA PUMP 3 2153-12UK (UK)

HALAWA WELL 2 2257-37
Ground Water (GW)

HALAWA WELL 2 2257-37UK (UK)

HALAWA PUMP 1 2255-39
Ground Water (GW)

HALAWA PUMP 1 2255-39UK (UK)

KUOU I PUMP 2 2348-03
Ground Water (GW)

KUOU I PUMP 2 2348-03UK (UK)

KUOU WELL II 2348-05
Ground Water (GW)

KUOU WELL II 2348-05UK (UK)

LULUKU TUNNEL 2349-01
Ground Water (GW)

LULUKU TUNNEL 2349-01UK (UK)

LULUKU 2349-02
Ground Water (GW)

LULUKU 2349-02UK (UK)

HALAWA SHAFT 2354-01
Ground Water (GW)

HALAWA SHAFT 2354-01UK (UK)

AIEA GULCH PUMP1 2355-03
Ground Water (GW)

AIEA GULCH PUMP1 2355-03UK (UK)

AIEA GULCH PUMP2 2355-05
Ground Water (GW)

AIEA GULCH PUMP2 2355-05UK (UK)

AIEA PUMP 2 2355-07
Ground Water (GW)

AIEA PUMP 2 2355-07UK (UK)

KALAUAO PUMP 1 2355-09
Ground Water (GW)

KALAUAO PUMP 1 2355-09UK (UK)

KALAUAO PUMP 2 2355-10
Ground Water (GW)

KALAUAO PUMP 2 2355-10UK (UK)

KALAUAO PUMP 3 2355-11
Ground Water (GW)

KALAUAO PUMP 3 2355-11UK (UK)

KALAUAO PUMP 6 2355-14
Ground Water (GW)

KALAUAO PUMP 6 2355-14UK (UK)

KAONOHI I PUMP 2 2356-55
Ground Water (GW)

KAONOHI I PUMP 2 2356-55UK (UK)

KAAUMANU PUMP 2 2357-23
Ground Water (GW)

KAAUMANU PUMP 2 2357-23UK (UK)

KAAHUMANU PUMP 1 2357-24
Ground Water (GW)

KAAHUMANU PUMP 1 2357-24UK (UK)

HAIKU TUNNEL 2450-01
Ground Water (GW)

HAIKU TUNNEL 2450-01UK (UK)

HAIKU WELL 2450-02
Ground Water (GW)

HAIKU WELL 2450-02UK (UK)

NEWTOWN PUMP 1 2456-01
Ground Water (GW)

NEWTOWN PUMP 1 2456-01UK (UK)

NEWTOWN PUMP 2 2456-02
Ground Water (GW)

NEWTOWN PUMP 2 2456-02UK (UK)

NEWTOWN PUMP 3 2456-03
Ground Water (GW)

NEWTOWN PUMP 3 2456-03UK (UK)

PEARL CITY II P1 2457-01
Ground Water (GW)

PEARL CITY II P1 2457-01UK (UK)

PEARL CITY II P2 2457-02
Ground Water (GW)

PEARL CITY II P2 2457-02UK (UK)

PEARL CITY II P3 2457-03
Ground Water (GW)

PEARL CITY II P3 2457-03UK (UK)

PUNANANI PUMP 1 2457-06
Ground Water (GW)

PUNANANI PUMP 1 2457-06UK (UK)

PUNANANI PUMP 2 2457-09
Ground Water (GW)

PUNANANI PUMP 2 2457-09UK (UK)

PUNANANI PUMP 4 2457-10
Ground Water (GW)

PUNANANI PUMP 4 2457-10UK (UK)

PUNANANI PUMP 3 2457-11
Ground Water (GW)

PUNANANI PUMP 3 2457-11UK (UK)

PUNANANI PUMP 5 2457-12
Ground Water (GW)

PUNANANI PUMP 5 2457-12UK (UK)

WAIAU PUMP 2 2457-13
Ground Water (GW)

WAIAU PUMP 2 2457-13UK (UK)

WAIAU PUMP 1 2457-14
Ground Water (GW)

WAIAU PUMP 1 2457-14UK (UK)

WAIAU PUMP 3 2457-15
Ground Water (GW)

WAIAU PUMP 3 2457-15UK (UK)

PEARL CITY SHAFT 2458-01
Ground Water (GW)

PEARL CITY SHAFT 2458-01UK (UK)

PEARL CITYI P1 2458-03
Ground Water (GW)

PEARL CITYI P1 2458-03UK (UK)

PEARL CITY I P2 2458-04
Ground Water (GW)

PEARL CITY I P2 2458-04UK (UK)

IOLEKAA 2459-01
Ground Water (GW)

IOLEKAA 2459-01UK (UK)

PEARLCITY III 1 2557-03
Ground Water (GW)

PEARLCITY III 1 2557-03UK (UK)

KAHALUU TUNNEL 2651-01
Ground Water (GW)

KAHALUU TUNNEL 2651-01UK (UK)

WAIHEE TUNNEL 2651-02
Ground Water (GW)

WAIHEE TUNNEL 2651-02UK (UK)

KAHALUU 2651-03
Ground Water (GW)

KAHALUU 2651-03UK (UK)

KAHANA PUMP 1 3353-01
Ground Water (GW)

KAHANA PUMP 1 3353-01UK (UK)

KAHANA PUMP 2 3353-02
Ground Water (GW)

KAHANA PUMP 2 3353-02UK (UK)

PUNALUU III P1 3453-06
Ground Water (GW)

PUNALUU III P1 3453-06UK (UK)

PUNALUU III P2 3453-07
Ground Water (GW)

PUNALUU III P2 3453-07UK (UK)

PUNALUU II P6 3554-03
Ground Water (GW)

PUNALUU II P6 3554-03UK (UK)

PUNALUU II PUMP2 3553-06
Ground Water (GW)

PUNALUU II PUMP2 3553-06UK (UK)

PUNALUU II P1 3553-07
Ground Water (GW)

PUNALUU II P1 3553-07UK (UK)

PUNALUU II P5 3553-08
Ground Water (GW)

PUNALUU II P5 3553-08UK (UK)

WAILUPE WELL 1745-01
Ground Water (GW)

WAILUPE WELL 1745-01UK (UK)

KAIMUKI STATION WELLS HS
Ground Water (GW)

KAIMUKI STATION WELLS HSUK (UK)

KAIMUKI STATION WELLS LS
Ground Water (GW)

KAIMUKI STATION WELLS LSUK (UK)

BERETANIA STATION HS
Ground Water (GW)

BERETANIA STATION HSUK (UK)

BERETANIA STATION LS
Ground Water (GW)

BERETANIA STATION LSUK (UK)

KALIHI STATION WELLS HS
Ground Water (GW)

KALIHI STATION WELLS HSUK (UK)

KALIHI STATION WELLS LS
Ground Water (GW)

KALIHI STATION WELLS LSUK (UK)

KUOU WELL III 2348-06
Ground Water (GW)

KUOU WELL III 2348-06UK (UK)

PUNALUU II P4 3553-03
Ground Water (GW)

PUNALUU II P4 3553-03UK (UK)

HAUULA WELL
Ground Water (GW)

HAUULA WELLUK (UK)

KULIOUOU WELL
Ground Water (GW)

KULIOUOU WELLUK (UK)

WAIAU HECO WELLS
Ground Water (GW)

WAIAU HECO WELLSUK (UK)

KALUANUI 2 (S. FALLS)
Ground Water (GW)

KALUANUI 2 (S. FALLS)UK (UK)

MAAKUA WELL
Ground Water (GW)

MAAKUA WELLUK (UK)

KAPALAMA WELLS P-1
Ground Water (GW)

KAPALAMA WELLS P-1UK (UK)

KAPALAMA WELLS P-2
Ground Water (GW)

KAPALAMA WELLS P-2UK (UK)

()

MD (MD)

()

Maximum Residence Time (MR)

()

LD (LD)

FAQ

Is Honolulu-Windward-Pearl Harbor tap water safe to drink?

When was Honolulu-Windward-Pearl Harbor last tested for water contamination?

The latest water samples were taken on November 18th, 2024.