Waialua-Haleiwa (HI) Water Quality

Waialua-Haleiwa is a large public water system in EPA region 9 that provides tap water for the 96712 zip codes. It has 9 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.31 µg/L. There were 1 contamintants found in the Waialua-Haleiwa water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (2)

1,2,3-trichloropropane (2)

1,3-butadiene (2)

1,4-dioxane (2)

1-butanol (2)

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

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

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

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

2,4-dinitrotoluene (8)

2,6-dinitrotoluene (8)

2-methoxyethanol (2)

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

4,4'-dichloro dichlorophenyl ethylene (DDE) (8)

4,8-dioxa-3H-perfluorononanoic acid (1)

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

alpha-hexachlorocyclohexane (2)

bromochloromethane (Halon 1011) (2)

bromomethane (2)

Butylated Hydroxyanisole (2)

chlorate (4)

chlorodifluoromethane (HCFC-22) (2)

chloromethane (2)

chlorpyrifos (2)

chromium (4)

chromium-6 (4)

cobalt (4)

dimethipin (2)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (8)

ethoprop (2)

Germanium (2)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (1)

lithium (1)

Manganese (2)

methyl-tertiary-butyl-ether (MTBE) (8)

molinate (8)

molybdenum (4)

N-ethyl perfluorooctanesulfonamidoacetic acid (1)

N-methyl perfluorooctanesulfonamidoacetic acid (1)

nitrobenzene (8)

nonafluoro-3,6-dioxaheptanoic acid (1)

o-toluidine (2)

oxyfluorfen (2)

perchlorate (8)

perfluoro(2-ethoxyethane)sulfonic acid (1)

perfluoro-3-methoxypropanoic acid (1)

perfluoro-4-methoxybutanoic acid (1)

perfluorobutanesulfonic acid (3)

perfluorobutanoic acid (1)

perfluorodecanoic acid (1)

perfluorododecanoic acid (1)

perfluoroheptanesulfonic acid (1)

perfluoroheptanoic acid (3)

perfluorohexanesulfonic acid (3)

perfluorohexanoic acid (1)

perfluorononanoic acid (3)

perfluorooctanesulfonic acid (3)

perfluorooctanoic acid (3)

perfluoropentanesulfonic acid (1)

perfluoropentanoic acid (1)

perfluorotetradecanoic acid (1)

perfluorotridecanoic acid (1)

perfluoroundecanoic acid (1)

profenofos (2)

quinoline (2)

s-ethyl-dipropylthiocarbamate (EPTC) (8)

strontium (4)

tebuconazole (2)

terbacil (8)

Total Permethrin (2)

tribufos (2)

vanadium (4)

Sampling Facilities

Waialua Wells
Ground Water (GW)

Waialua Wells Post Cl2Entry Point to the Distribution System (EP)

Waimea Bay Restroom
Ground Water (GW)

Waimea Bay RestroomDistribution System (DS)

Fire Station on Haleiwa Road - mop sink
Ground Water (GW)

Fire Station on Haleiwa Road - mop sinkDistribution System (DS)

WAIALEE WELLS I & II
Ground Water (GW)

WAIALEE WELLS I & II POST CL2Entry Point to the Distribution System (EP)

HALEIWA WELLS
Ground Water (GW)

HALEIWA WELLS POST CL2Entry Point to the Distribution System (EP)

WAIALUA PUMP 1 3405-01
Ground Water (GW)

WAIALUA PUMP 1 3405-01UK (UK)

WAIALUA PUMP 2 3405-02
Ground Water (GW)

WAIALUA PUMP 2 3405-02UK (UK)

HALEIWA PUMP 1 3405-03
Ground Water (GW)

HALEIWA PUMP 1 3405-03UK (UK)

HALEIWA PUMP 2 3405-04
Ground Water (GW)

HALEIWA PUMP 2 3405-04UK (UK)

FAQ

Is Waialua-Haleiwa tap water safe to drink?

When was Waialua-Haleiwa last tested for water contamination?

The latest water samples were taken on February 12th, 2025.