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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Deer Butte Subdivision

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND30ND
2017ND20ND
2018ND20ND
2019ND10ND

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
2014-07-28Q1431357004ND
2015-09-15Q1535841001ND
2015-09-15Q1535841003ND
2016-03-24Q1612182007ND
2016-06-01Q1621575001ND
2016-06-01Q1621575002ND
2017-09-27Q1746954001ND
2017-11-01Q1756130004ND
2018-09-25Q1838306001ND
2018-11-27Q1848070002ND
2019-08-20Q1956816002ND