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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Bastrop Water System

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.400 ppb106ND - 0.700 ppb
2015ND40ND
20160.400 ppb42ND - 0.800 ppb
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-02-182976244ND
2014-02-182976242ND
2014-02-1829762430.700 ppb
2014-02-182976244ND
2014-02-1829762450.600 ppb
2014-02-1829762430.700 ppb
2014-02-182976242ND
2014-02-1829762450.600 ppb
2014-08-1130803660.700 ppb
2014-08-1130803660.700 ppb
2015-02-043182216ND
2015-02-043182216ND
2015-08-261422219ND
2015-08-261422219ND
2016-02-101466306ND
2016-02-101466306ND
2016-08-1815173090.800 ppb
2016-08-1815173090.800 ppb
2017-02-0335293411019ND
2017-02-0335293411019ND
2017-08-0335328348001ND
2017-08-0335328348001ND
2018-02-1235373921001ND
2018-02-1235373921001ND
2018-08-0635409589001ND
2018-08-0635409589001ND
2019-02-0435446798001ND
2019-02-0435446798001ND
2019-08-0135487135001ND
2019-08-0135487135001ND