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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Park WC - Compton

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.279 ppb193ND - 2.30 ppb
20150.554 ppb134ND - 2.20 ppb
20160.629 ppb175ND - 2.70 ppb
20171.63 ppb186ND - 11.0 ppb
20180.869 ppb136ND - 2.90 ppb
20190.700 ppb224ND - 7.70 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
2014-01-169588-016-1400ND
2014-01-169588-800-0928ND
2014-01-169588-801-0939ND
2014-01-169588-802-0952ND
2014-01-169588-803-1007ND
2014-04-179588-016-0820ND
2014-04-179588-800-0900ND
2014-04-179588-801-0908ND
2014-04-179588-802-0921ND
2014-04-179588-803-09411.70 ppb
2014-07-109588-016-1000ND
2014-07-109588-800-0950ND
2014-07-109588-801-1001ND
2014-07-109588-802-1015ND
2014-07-109588-803-10251.30 ppb
2014-10-169588-800-0756ND
2014-10-169588-801-0811ND
2014-10-169588-802-0830ND
2014-10-169588-803-09202.30 ppb
2015-01-229588-800-0815ND
2015-01-229588-801-0830ND
2015-01-229588-802-0850ND
2015-01-229588-803-09202.20 ppb
2015-04-179588-800-0626ND
2015-04-179588-801-0644ND
2015-04-179588-802-0654ND
2015-04-179588-803-07102.10 ppb
2015-07-169588-016-0925ND
2015-07-169588-800-0950ND
2015-07-169588-801-1010ND
2015-07-169588-802-10201.30 ppb
2015-07-169588-803-10351.60 ppb
2016-02-049588-800-0858ND
2016-02-049588-801-0915ND
2016-02-049588-802-0950ND
2016-02-049588-803-10251.60 ppb
2016-04-229588-800-0725ND
2016-04-229588-801-0740ND
2016-04-229588-802-0755ND
2016-04-229588-803-08152.70 ppb
2016-07-149588-016-1008ND
2016-07-289588-800-0910ND
2016-07-289588-801-0932ND
2016-07-289588-802-09501.90 ppb
2016-07-289588-803-10102.60 ppb
2016-10-279588-800-1045ND
2016-10-279588-801-1100ND
2016-10-279588-802-1115ND
2016-10-279588-803-11301.90 ppb
2017-01-129588-016-1201ND
2017-01-139588-800-0850ND
2017-01-139588-801-0900ND
2017-01-139588-802-09151.10 ppb
2017-01-139588-803-09352.10 ppb
2017-04-109588-800-1255ND
2017-04-109588-801-1240ND
2017-04-109588-802-1155ND
2017-04-109588-803-121511.0 ppb
2017-07-209588-800-0950ND
2017-07-209588-801-0925ND
2017-07-209588-802-0913ND
2017-07-209588-803-08558.00 ppb
2017-10-129588-800-0945ND
2017-10-129588-801-1000ND
2017-10-129588-802-10302.40 ppb
2017-10-129588-803-10504.80 ppb
2017-11-309588-016-1201ND
2018-01-189588-800-1000ND
2018-01-189588-801-1022ND
2018-01-189588-802-10372.10 ppb
2018-01-189588-803-11002.90 ppb
2018-02-019588-016-1205ND
2018-04-269588-800-0811ND
2018-04-269588-801-0830ND
2018-04-269588-802-08451.30 ppb
2018-04-269588-803-09052.20 ppb
2018-10-119588-800-0855ND
2018-10-119588-801-0915ND
2018-10-119588-802-09301.20 ppb
2018-10-119588-803-09451.60 ppb
2019-01-089588-800-1320ND
2019-01-089588-801-1528ND
2019-01-089588-802-1439ND
2019-01-089588-803-1216ND
2019-02-139588-016-1130ND
2019-04-099588-800-1000ND
2019-04-099588-801-0930ND
2019-04-099588-802-0900ND
2019-04-099588-803-1030ND
2019-05-159588-016-1123ND
2019-07-109588-800-0745ND
2019-07-109588-801-0800ND
2019-07-109588-802-0815ND
2019-07-109588-803-0845ND
2019-07-309588-018-1030ND
2019-08-139588-016-1215ND
2019-10-089588-800-10401.20 ppb
2019-10-089588-801-11002.50 ppb
2019-10-089588-802-09404.00 ppb
2019-10-089588-803-11307.70 ppb
2019-10-239588-018-1045ND
2019-11-129588-016-1430ND