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EWG's Tap Water Database — 2019 UPDATE

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Hawaii

  • 116 Utilities

  • Serving: 1,494,000

  • Data available: 2012-2017

  • Contaminants Found: 52

 

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
LARGE 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 April 2016 to March 2019 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
Waiawa Correctional FacilityPearl City, HI44455
Poamoho EstatesWaialua, HI2521
Maunaloa-kaluakoiHonolulu, HI1,00010
KailuaPaia, HI902
LahainaWailuku, HI18,1221
Dillingham AirfieldHonolulu, HI1,8001
Lihue-KapaaLihue, HI31,3371

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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
LahainaWailuku, HI18,1221
Lihue-KapaaLihue, HI31,3371

Contaminants found in Hawaii above health guidelines

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

Nitrate
841,444,046931,458,724

Nitrate and nitrite
831,425,599891,449,881

Total trihalomethanes (TTHMs)
991,402,667991,402,667

Chromium (hexavalent)
281,355,144281,355,144

Bromoform
761,255,925871,375,028

1,2,3-Trichloropropane
181,058,854181,058,854

Arsenic
3692,3063692,306

Vanadium
16519,118261,347,377

Dibromochloromethane
67411,697741,347,403

Haloacetic acids (HAA5)
50325,88051514,419

Dibromoacetic acid
45314,182491,186,165

Bromodichloromethane
46286,82447475,363

Bromochloroacetic acid
8158,4928158,492

Chloroform
27135,92634424,674

Dichloroacetic acid
17117,65720982,602

1,2-Dibromo-3-chloropropane (DBCP)
7116,1929321,347

Trichloroacetic acid
16111,11217299,651

Chlordane
272,7435765,049

Trichloroethylene
140,558140,558

Tetrachloroethylene (perchloroethylene)
225,393225,393

Atrazine
54,58214234,060

Benzo[a]pyrene
13,40013,400

Uranium
11,7605694,534

Chlorate
11,310161,199,384

Ethylene dibromide
11001100

Contaminants found in Hawaii above legal limits

Contaminant# of UtilitiesPeople Served