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EWG's Tap Water Database

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Hawaii

  • 117 Utilities

  • Serving: 1,494,000

  • Data available: 2010-2015

  • Contaminants Found: 45

 

EWG's drinking water quality report for Hawaii shows results of tests conducted by the water utilities in Hawaii and provided to EWG by the Hawaii Department of Health.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS

Below are utilities in Hawaii serving over 10,000 people, listed alphabetically.

Large utilities in Hawaii

UtilityLocationPeople
Served
HiloHilo, HI37,430
Honolulu-Windward-Pearl HarborHonolulu, HI676,358
Joint Base Pearl Harbor-HickamJbphh, HI65,230
Kalaheo-KoloaLihue, HI11,382
LahainaWailuku, HI18,122
Lihue-KapaaLihue, HI31,337
MakawaoWailuku, HI28,702
Marine Corps Base HawaiiKaneohe Bay, HI15,900
MililaniHonolulu, HI35,875
North KonaHilo, HI27,942
Schofield BarracksSchofield Barracks, HI40,558
South KohalaHilo, HI11,927
WahiawaHonolulu, HI24,798
WaialuaHonolulu, HI13,447
WaikoloaWaikoloa, HI12,100
WailukuWailuku, HI68,976
Waipahu-Ewa-WaianaeHonolulu, HI188,539
Waipio HeightsHonolulu, HI16,616

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Hawaii

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
KailuaPaia, HI901

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Hawaii

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points

Contaminants found in Hawaii above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Chromium (hexavalent)
271,347,777271,347,777

Bromoform
511,266,815531,296,618

Total trihalomethanes (TTHMs)
671,097,643741,345,025

1,2,3-Trichloropropane
191,059,254191,059,254

Chlordane
4757,5364757,536

Vanadium
17519,518271,347,777

Dibromochloromethane
37339,196391,015,602

1,2-Dibromo-3-chloropropane (DBCP)
6268,7566268,756

Bromodichloromethane
27231,56627231,566

Chloroform
18119,70221217,721

Dichloroacetic acid
12107,36212107,362

Trichloroacetic acid
10106,64710106,647

Tetrachloroethylene (perchloroethylene)
225,393225,393

Atrazine
64,7171112,984

Uranium
11,76011,760

Chlorate
11,310171,199,784

Radium-226
12701270

Nitrate
143911,459,157

Contaminants found in Hawaii above legal limits

Contaminant# of UtilitiesPeople Served