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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Town & Country Service

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015ND180ND
20160.0488 ppb162ND - 0.390 ppb
2017ND160ND
20180.169 ppb164ND - 0.840 ppb
20190.689 ppb182ND - 6.20 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
2014-02-181279201ND
2014-02-181279202ND
2014-02-181279201ND
2014-02-181279202ND
2014-05-051299707ND
2014-05-051299707ND
2014-05-061299717ND
2014-05-061299718ND
2014-05-061299717ND
2014-05-061299718ND
2014-05-271304837ND
2014-05-271304837ND
2014-08-051323664ND
2014-08-051323665ND
2014-08-051323664ND
2014-08-051323665ND
2014-11-111349669ND
2014-11-111349670ND
2014-11-111349669ND
2014-11-111349670ND
2015-02-181373504ND
2015-02-181373505ND
2015-02-181373504ND
2015-02-181373505ND
2015-05-141395225ND
2015-05-141395226ND
2015-05-141395225ND
2015-05-141395226ND
2015-06-021400365ND
2015-06-021400365ND
2015-08-101417891ND
2015-08-101417892ND
2015-08-101417891ND
2015-08-101417892ND
2015-11-041441198ND
2015-11-041441199ND
2015-11-041441198ND
2015-11-041441199ND
2016-02-031464303ND
2016-02-031464304ND
2016-02-031464303ND
2016-02-031464304ND
2016-05-041489465ND
2016-05-041489466ND
2016-05-041489465ND
2016-05-041489466ND
2016-08-151516814ND
2016-08-151516815ND
2016-08-151516814ND
2016-08-151516815ND
2016-11-0915406200.390 ppb
2016-11-091540621ND
2016-11-0915406200.390 ppb
2016-11-091540621ND
2017-02-0135292582009ND
2017-02-0135292582010ND
2017-02-0135292582009ND
2017-02-0135292582010ND
2017-05-0435310618001ND
2017-05-0435310618002ND
2017-05-0435310618001ND
2017-05-0435310618002ND
2017-08-0235328002001ND
2017-08-0235328002002ND
2017-08-0235328002001ND
2017-08-0235328002002ND
2017-11-0335346156001ND
2017-11-0335346156002ND
2017-11-0335346156001ND
2017-11-0335346156002ND
2018-02-02353720430010.840 ppb
2018-02-0235372043002ND
2018-02-02353720430010.840 ppb
2018-02-0235372043002ND
2018-05-0335390245001ND
2018-05-0335390245002ND
2018-05-0335390245001ND
2018-05-0335390245002ND
2018-08-0135408585001ND
2018-08-01354085850020.510 ppb
2018-08-0135408585001ND
2018-08-01354085850020.510 ppb
2018-11-0835429973001ND
2018-11-0835429973002ND
2018-11-0835429973001ND
2018-11-0835429973002ND
2019-02-0635446802001ND
2019-02-0635446802002ND
2019-02-0635446802001ND
2019-02-0635446802002ND
2019-04-10354612500016.20 ppb
2019-04-10354612500016.20 ppb
2019-05-0735467837001ND
2019-05-0735467837002ND
2019-05-0735467837001ND
2019-05-0735467837002ND
2019-08-0235487236001ND
2019-08-0235487236002ND
2019-08-0235487236001ND
2019-08-0235487236002ND
2019-11-1435512561001ND
2019-11-1435512561002ND
2019-11-1435512561001ND
2019-11-1435512561002ND