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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Golden State Water Company (GSWC) - South Arcadia

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

 

232

Samples

0

Samples exceeding legal limit (MCL)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.202 ppb587ND - 3.20 ppb
20150.193 ppb586ND - 2.80 ppb
20160.267 ppb427ND - 2.30 ppb
20170.191 ppb234ND - 1.30 ppb
20180.348 ppb236ND - 2.30 ppb
20190.268 ppb284ND - 2.40 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
2014-01-132706-002-1204ND
2014-01-132706-003-1044ND
2014-01-239588-800-0835ND
2014-01-239588-801-0810ND
2014-01-239588-802-08001.50 ppb
2014-01-239588-803-08201.20 ppb
2014-02-102706-002-1115ND
2014-02-102706-003-1024ND
2014-02-102706-004-1436ND
2014-02-269588-005-1110ND
2014-03-102706-002-1109ND
2014-03-132706-003-1100ND
2014-03-132706-004-1120ND
2014-04-072706-002-1230ND
2014-04-072706-003-1243ND
2014-04-072706-004-1322ND
2014-04-229588-800-0815ND
2014-04-229588-801-07501.10 ppb
2014-04-229588-802-07401.40 ppb
2014-04-229588-803-08003.20 ppb
2014-05-122706-002-1225ND
2014-05-122706-003-1325ND
2014-05-122706-004-1301ND
2014-05-159588-004-1125ND
2014-05-159588-006-1015ND
2014-06-092706-002-1127ND
2014-06-092706-003-1403ND
2014-06-092706-004-1100ND
2014-07-072706-002-1144ND
2014-07-072706-003-1152ND
2014-07-072706-004-1200ND
2014-07-239588-800-0750ND
2014-07-239588-801-0720ND
2014-07-239588-802-0705ND
2014-07-239588-803-07351.30 ppb
2014-08-112706-002-1101ND
2014-08-112706-003-1035ND
2014-08-112706-004-1208ND
2014-08-289588-003-1020ND
2014-08-289588-006-1100ND
2014-08-289588-014-1025ND
2014-09-082706-002-1024ND
2014-09-082706-003-1105ND
2014-09-082706-004-1005ND
2014-10-132706-002-1030ND
2014-10-132706-003-1004ND
2014-10-132706-004-1215ND
2014-10-239588-800-0835ND
2014-10-239588-801-0810ND
2014-10-239588-802-0800ND
2014-10-239588-803-08202.00 ppb
2014-11-059588-002-1035ND
2014-11-059588-015-0955ND
2014-11-102706-002-1111ND
2014-11-102706-004-1058ND
2014-12-082706-002-0955ND
2014-12-082706-003-0940ND
2014-12-082706-004-1109ND
2015-01-122706-002-1006ND
2015-01-122706-003-1104ND
2015-01-122706-004-1011ND
2015-01-239588-800-0805ND
2015-01-239588-801-0740ND
2015-01-239588-802-0730ND
2015-01-239588-803-0750ND
2015-02-092706-002-1040ND
2015-02-092706-003-1007ND
2015-02-092706-004-1138ND
2015-02-199588-005-1005ND
2015-03-092706-002-1113ND
2015-03-092706-003-1016ND
2015-03-092706-004-1118ND
2015-04-132706-002-1018ND
2015-04-132706-003-1121ND
2015-04-132706-004-1009ND
2015-04-229588-800-0800ND
2015-04-229588-801-0740ND
2015-04-229588-802-07301.20 ppb
2015-04-229588-803-07501.50 ppb
2015-05-112706-002-1115ND
2015-05-112706-003-1034ND
2015-05-112706-004-1130ND
2015-05-199588-004-0935ND
2015-06-082706-002-1052ND
2015-06-082706-003-1103ND
2015-06-082706-004-1011ND
2015-07-142706-002-0937ND
2015-07-142706-003-1010ND
2015-07-142706-004-0943ND
2015-07-239588-800-0805ND
2015-07-239588-801-0745ND
2015-07-239588-802-07352.00 ppb
2015-07-239588-803-07552.80 ppb
2015-08-102706-002-1000ND
2015-08-102706-003-0946ND
2015-08-102706-004-1016ND
2015-08-149588-003-1005ND
2015-08-149588-006-1045ND
2015-08-149588-014-1115ND
2015-09-082706-002-1100ND
2015-09-082706-003-1055ND
2015-09-082706-004-1010ND
2015-10-122706-002-1000ND
2015-10-122706-004-0940ND
2015-10-269588-800-0805ND
2015-10-269588-801-0740ND
2015-10-269588-802-07301.10 ppb
2015-10-269588-803-07502.60 ppb
2015-11-092706-002-0923ND
2015-11-092706-003-0917ND
2015-11-092706-004-1019ND
2015-11-179588-002-0950ND
2015-11-179588-015-1015ND
2015-12-072706-002-1055ND
2015-12-072706-003-1105ND
2015-12-072706-004-1011ND
2016-01-112706-002-1158ND
2016-01-112706-003-1201ND
2016-01-269588-800-0825ND
2016-01-269588-801-0800ND
2016-01-269588-802-07501.70 ppb
2016-01-269588-803-08101.40 ppb
2016-02-082706-003-1120ND
2016-03-082706-003-0920ND
2016-03-082706-004-0930ND
2016-03-229588-005-1110ND
2016-04-112706-003-1034ND
2016-04-112706-004-1442ND
2016-04-229588-800-0805ND
2016-04-229588-801-0740ND
2016-04-229588-802-07301.10 ppb
2016-04-229588-803-07502.30 ppb
2016-04-252706-005-0923ND
2016-05-102706-003-0935ND
2016-05-102706-004-0943ND
2016-05-119588-004-1030ND
2016-06-142706-003-1012ND
2016-06-202706-002-1046ND
2016-06-202706-004-1035ND
2016-07-112706-002-1355ND
2016-07-112706-003-1345ND
2016-07-112706-004-1425ND
2016-07-269588-800-0810ND
2016-07-269588-801-0740ND
2016-07-269588-802-0730ND
2016-07-269588-803-07551.70 ppb
2016-08-080007-002-1115ND
2016-08-080007-003-1051ND
2016-08-080007-004-1107ND
2016-08-199588-003-1055ND
2016-08-199588-006-0920ND
2016-08-199588-014-0850ND
2016-10-269588-800-0830ND
2016-10-269588-801-0810ND
2016-10-269588-802-08001.60 ppb
2016-10-269588-803-08201.40 ppb
2016-11-179588-002-1005ND
2016-11-179588-015-1100ND
2017-01-249588-800-0815ND
2017-01-249588-801-0750ND
2017-01-249588-802-07401.30 ppb
2017-01-249588-803-08001.000 ppb
2017-02-169588-005-1120ND
2017-04-249588-800-0940ND
2017-04-249588-801-0905ND
2017-04-249588-802-0855ND
2017-04-249588-803-09251.10 ppb
2017-05-169588-004-1020ND
2017-07-279588-800-1435ND
2017-07-279588-801-1515ND
2017-07-279588-802-1530ND
2017-07-279588-803-14501.000 ppb
2017-08-109588-003-1000ND
2017-08-109588-006-1035ND
2017-08-109588-014-1055ND
2017-10-249588-800-0810ND
2017-10-249588-801-0740ND
2017-10-249588-802-0730ND
2017-10-249588-803-0755ND
2017-11-299588-002-0945ND
2017-11-299588-015-1015ND
2018-01-249588-800-0830ND
2018-01-249588-801-0805ND
2018-01-249588-802-07551.20 ppb
2018-01-249588-803-08151.10 ppb
2018-02-149588-005-1010ND
2018-04-249588-800-0810ND
2018-04-249588-801-0740ND
2018-04-249588-802-0730ND
2018-04-249588-803-07501.20 ppb
2018-05-179588-004-1005ND
2018-07-249588-800-0750ND
2018-07-249588-801-0725ND
2018-07-249588-802-07151.000 ppb
2018-07-249588-803-07351.20 ppb
2018-08-169588-003-1015ND
2018-08-169588-006-1115ND
2018-08-169588-014-1100ND
2018-10-239588-800-0805ND
2018-10-239588-801-0740ND
2018-10-239588-802-0730ND
2018-10-239588-803-07502.30 ppb
2018-11-299588-002-1050ND
2018-11-299588-015-1220ND
2019-01-249588-800-0850ND
2019-01-249588-801-0820ND
2019-01-249588-802-0810ND
2019-01-249588-803-08301.20 ppb
2019-02-229588-005-0910ND
2019-04-229590-015-1106ND
2019-04-229590-015-1111ND
2019-04-229590-015-1116ND
2019-04-229590-015-1121ND
2019-04-229590-015-1126ND
2019-04-239588-800-0800ND
2019-04-239588-801-0735ND
2019-04-239588-802-0725ND
2019-04-239588-803-07452.00 ppb
2019-05-229588-004-1130ND
2019-07-239588-800-0740ND
2019-07-239588-801-0715ND
2019-07-239588-802-0705ND
2019-07-239588-803-07251.90 ppb
2019-08-149588-003-1030ND
2019-08-149588-006-1135ND
2019-08-149588-014-1150ND
2019-10-239588-800-0755ND
2019-10-239588-801-0730ND
2019-10-239588-802-0720ND
2019-10-239588-803-07402.40 ppb
2019-11-129588-002-1115ND
2019-11-129588-015-1240ND