Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Honolulu-Windward-Pearl Harbor

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

180

Samples

0

Samples exceeding legal limit (MCL)

89

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
20152.22 ppb3020ND - 11.0 ppb
20161.41 ppb2515ND - 4.30 ppb
20170.690 ppb7218ND - 14.0 ppb
20182.37 ppb2818ND - 11.0 ppb
20192.48 ppb2518ND - 17.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2015-01-062015010803934.20 ppb
2015-01-062015010803941.10 ppb
2015-01-062015010804002.30 ppb
2015-01-062015010804032.90 ppb
2015-01-132015011505855.80 ppb
2015-02-09201502110395ND
2015-02-102015021202760.670 ppb
2015-04-012015040302441.20 ppb
2015-04-062015040802957.50 ppb
2015-04-062015040802962.30 ppb
2015-04-082015041001591.20 ppb
2015-04-082015041001605.70 ppb
2015-04-13201504140137ND
2015-04-20201504210283ND
2015-05-04201505060108ND
2015-05-27201505290083ND
2015-07-072015070801630.520 ppb
2015-07-08201507100093ND
2015-07-0920150710011111.0 ppb
2015-07-092015071001122.80 ppb
2015-07-132015071505801.20 ppb
2015-07-132015071505814.60 ppb
2015-08-18201508200479ND
2015-10-052015100701940.950 ppb
2015-10-052015100701961.000 ppb
2015-10-062015091601112.90 ppb
2015-10-062015091601126.80 ppb
2015-10-07201509160110ND
2015-10-19201510140073ND
2015-12-28201512180363ND
2016-01-051.10 ppb
2016-01-062.50 ppb
2016-01-12ND
2016-01-122.70 ppb
2016-01-12ND
2016-02-092.60 ppb
2016-04-111.40 ppb
2016-04-113.70 ppb
2016-04-11ND
2016-04-132.50 ppb
2016-04-13ND
2016-04-190.700 ppb
2016-05-02ND
2016-05-04ND
2016-07-052.40 ppb
2016-07-051.10 ppb
2016-07-053.80 ppb
2016-07-06ND
2016-07-11ND
2016-10-033.60 ppb
2016-10-04ND
2016-10-051.70 ppb
2016-10-141.20 ppb
2016-10-144.30 ppb
2016-10-28ND
2017-01-030.710 ppb
2017-01-033.60 ppb
2017-01-031.40 ppb
2017-01-172.80 ppb
2017-01-23ND
2017-02-14ND
2017-04-03ND
2017-04-03ND
2017-04-031.90 ppb
2017-04-034.80 ppb
2017-04-05ND
2017-04-05ND
2017-04-0514.0 ppb
2017-04-05ND
2017-04-101.90 ppb
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-17ND
2017-04-17ND
2017-04-18ND
2017-04-18ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-19ND
2017-04-20ND
2017-05-01ND
2017-05-01ND
2017-05-020.890 ppb
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-04ND
2017-05-09ND
2017-05-09ND
2017-05-09ND
2017-05-10ND
2017-05-10ND
2017-05-11ND
2017-05-16ND
2017-05-16ND
2017-05-17ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-22ND
2017-05-23ND
2017-05-23ND
2017-05-24ND
2017-05-300.670 ppb
2017-06-05ND
2017-06-05ND
2017-06-06ND
2017-06-070.520 ppb
2017-06-13ND
2017-07-03ND
2017-07-102.10 ppb
2017-07-101.60 ppb
2017-07-104.00 ppb
2017-07-10ND
2017-10-032.50 ppb
2017-10-032.10 ppb
2017-10-033.60 ppb
2017-10-03ND
2017-10-050.580 ppb
2018-01-082018010300789.30 ppb
2018-01-10201801030076ND
2018-01-102018010300772.50 ppb
2018-01-112018010300794.70 ppb
2018-01-112018010300803.90 ppb
2018-02-12201801080281ND
2018-02-20201801290307ND
2018-03-28201803300306ND
2018-04-02201804040969ND
2018-04-022018040409792.70 ppb
2018-04-022018040409742.10 ppb
2018-04-022018040409752.70 ppb
2018-04-042018040902806.50 ppb
2018-04-23201804270354ND
2018-04-242018042604400.600 ppb
2018-05-30201805230584ND
2018-07-062018071110562.40 ppb
2018-07-062018071110571.50 ppb
2018-07-062018071110584.40 ppb
2018-07-0620180711106111.0 ppb
2018-07-102018070500381.000 ppb
2018-07-25201807270183ND
2018-08-08201808110152ND
2018-10-02201807050040ND
2018-10-052018100906411.50 ppb
2018-10-052018100906423.50 ppb
2018-10-092018101106021.80 ppb
2018-10-122018070500414.30 ppb
2019-01-142019011604632.50 ppb
2019-01-14201901160462ND
2019-01-172019011801180.970 ppb
2019-01-172019011801201.40 ppb
2019-01-172019011801212.80 ppb
2019-04-012019040401883.20 ppb
2019-04-012019040401877.80 ppb
2019-04-032019040502030.860 ppb
2019-04-032019040502051.90 ppb
2019-04-032019040502062.30 ppb
2019-07-082019071004761.80 ppb
2019-07-082019071004775.30 ppb
2019-07-092019071103994.40 ppb
2019-07-09201906200200ND
2019-07-292019073003112.30 ppb
2019-07-2920190730031017.0 ppb
2019-09-18201909200252ND
2019-09-25201909270220ND
2019-10-042019100805982.30 ppb
2019-10-072019100905520.970 ppb
2019-10-072019100905841.50 ppb
2019-10-07201910090585ND
2019-10-082019101008152.80 ppb
2019-10-29201910310278ND
2019-12-24201912180100ND