Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromodichloromethane

Sativa-L.A. County Water District

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND30ND
2016ND50ND
20170.280 ppb51ND - 1.40 ppb
2018ND20ND
2019ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-01-279588-001-1153ND
2014-04-079588-005-1145ND
2014-04-079588-002-1200ND
2014-04-249588-005-1050ND
2014-04-249588-002-1110ND
2014-08-133761-801-1355ND
2014-08-193761-800-1040ND
2015-01-059588-001-0950ND
2015-04-069588-005-0940ND
2015-09-189588-002-0850ND
2016-03-229588-001-1110ND
2016-04-049588-005-1010ND
2016-07-053761-800-0935ND
2016-07-053761-801-1005ND
2016-07-119588-002-1020ND
2017-02-079588-001-1000ND
2017-05-019588-005-0955ND
2017-07-053761-800-1035ND
2017-07-053761-801-09201.40 ppb
2017-07-149588-002-1010ND
2018-04-129588-005-1035ND
2018-07-319588-002-0940ND
2019-04-019588-005-0858ND
2019-07-019588-002-0957ND
2019-07-023761-800-1112ND
2019-07-023761-801-1022ND