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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Honolulu-Windward-Pearl Harbor

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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

 

179

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
20150.0469 ppb292ND - 0.840 ppb
20160.116 ppb254ND - 0.920 ppb
20170.0515 ppb724ND - 1.10 ppb
20180.131 ppb284ND - 1.20 ppb
20190.134 ppb254ND - 1.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2015-01-062015010803930.520 ppb
2015-01-06201501080394ND
2015-01-06201501080400ND
2015-01-06201501080403ND
2015-01-13201501150585ND
2015-02-09201502110395ND
2015-02-10201502120276ND
2015-04-06201504080295ND
2015-04-06201504080296ND
2015-04-08201504100159ND
2015-04-082015041001600.840 ppb
2015-04-13201504140137ND
2015-04-20201504210283ND
2015-05-04201505060108ND
2015-05-27201505290083ND
2015-07-07201507080163ND
2015-07-08201507100093ND
2015-07-09201507100111ND
2015-07-09201507100112ND
2015-07-13201507150580ND
2015-07-13201507150581ND
2015-08-18201508200479ND
2015-10-05201510070194ND
2015-10-05201510070196ND
2015-10-06201509160111ND
2015-10-06201509160112ND
2015-10-07201509160110ND
2015-10-19201510140073ND
2015-12-28201512180363ND
2016-01-05ND
2016-01-060.560 ppb
2016-01-12ND
2016-01-12ND
2016-01-12ND
2016-02-09ND
2016-04-11ND
2016-04-110.640 ppb
2016-04-11ND
2016-04-13ND
2016-04-13ND
2016-04-19ND
2016-05-02ND
2016-05-04ND
2016-07-05ND
2016-07-05ND
2016-07-050.780 ppb
2016-07-06ND
2016-07-11ND
2016-10-03ND
2016-10-04ND
2016-10-05ND
2016-10-14ND
2016-10-140.920 ppb
2016-10-28ND
2017-01-03ND
2017-01-031.10 ppb
2017-01-03ND
2017-01-17ND
2017-01-23ND
2017-02-14ND
2017-04-03ND
2017-04-03ND
2017-04-03ND
2017-04-031.10 ppb
2017-04-05ND
2017-04-05ND
2017-04-05ND
2017-04-05ND
2017-04-10ND
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
2017-05-02ND
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
2017-05-30ND
2017-06-05ND
2017-06-05ND
2017-06-06ND
2017-06-07ND
2017-06-13ND
2017-07-03ND
2017-07-10ND
2017-07-10ND
2017-07-100.680 ppb
2017-07-10ND
2017-10-03ND
2017-10-03ND
2017-10-030.830 ppb
2017-10-03ND
2017-10-05ND
2018-01-08201801030078ND
2018-01-10201801030076ND
2018-01-10201801030077ND
2018-01-11201801030079ND
2018-01-112018010300800.870 ppb
2018-02-12201801080281ND
2018-02-20201801290307ND
2018-03-28201803300306ND
2018-04-02201804040969ND
2018-04-02201804040979ND
2018-04-02201804040974ND
2018-04-022018040409750.720 ppb
2018-04-04201804090280ND
2018-04-23201804270354ND
2018-04-24201804260440ND
2018-05-30201805230584ND
2018-07-06201807111056ND
2018-07-06201807111057ND
2018-07-062018071110580.880 ppb
2018-07-06201807111061ND
2018-07-10201807050038ND
2018-07-25201807270183ND
2018-08-08201808110152ND
2018-10-02201807050040ND
2018-10-05201810090641ND
2018-10-052018100906421.20 ppb
2018-10-09201810110602ND
2018-10-12201807050041ND
2019-01-14201901160463ND
2019-01-14201901160462ND
2019-01-17201901180118ND
2019-01-17201901180120ND
2019-01-172019011801210.850 ppb
2019-04-01201904040188ND
2019-04-01201904040187ND
2019-04-03201904050203ND
2019-04-03201904050205ND
2019-04-032019040502060.840 ppb
2019-07-08201907100476ND
2019-07-08201907100477ND
2019-07-092019071103991.10 ppb
2019-07-09201906200200ND
2019-07-29201907300311ND
2019-07-29201907300310ND
2019-09-18201909200252ND
2019-09-25201909270220ND
2019-10-04201910080598ND
2019-10-07201910090552ND
2019-10-07201910090584ND
2019-10-07201910090585ND
2019-10-082019101008150.570 ppb
2019-10-29201910310278ND
2019-12-24201912180100ND