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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

East Biggs Water System

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201410.2 ppb167ND - 49.1 ppb
20159.09 ppb166ND - 38.2 ppb
201610.5 ppb1610ND - 30.9 ppb
20174.60 ppb1610ND - 21.5 ppb
201811.2 ppb1610ND - 33.8 ppb
20190.604 ppb167ND - 1.67 ppb

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
2014-02-27Q1406492004ND
2014-02-27Q1406492003ND
2014-02-27Q1406492002ND
2014-02-27Q1406492001ND
2014-05-28Q1418497004ND
2014-05-28Q14184970021.000 ppb
2014-06-09Q1420366002ND
2014-06-09Q1420366001ND
2014-08-06Q143493800249.1 ppb
2014-08-06Q143493800141.5 ppb
2014-08-06Q143493800329.5 ppb
2014-08-06Q143493800439.5 ppb
2014-11-19Q14569530041.60 ppb
2014-11-19Q1456953003ND
2014-11-19Q14569530021.000 ppb
2014-11-19Q1456953001ND
2015-01-14Q1501477004ND
2015-01-14Q1501477003ND
2015-01-14Q1501477002ND
2015-01-14Q1501477001ND
2015-04-29Q1515770001ND
2015-04-29Q1515770002ND
2015-04-29Q1515770004ND
2015-04-29Q1515770003ND
2015-07-29Q152939300438.2 ppb
2015-07-29Q152939300331.8 ppb
2015-07-29Q152939300233.0 ppb
2015-07-29Q152939300134.9 ppb
2015-10-14Q15407210045.15 ppb
2015-10-14Q1540721003ND
2015-10-14Q15407210022.41 ppb
2015-10-14Q1540721001ND
2016-01-27Q1603772003ND
2016-01-27Q1603772002ND
2016-01-27Q1603772004ND
2016-01-27Q1603772001ND
2016-04-27Q161671200412.8 ppb
2016-04-27Q16167120032.29 ppb
2016-04-27Q161671200217.5 ppb
2016-04-27Q16167120013.38 ppb
2016-07-28Q163087800430.9 ppb
2016-07-28Q163087800326.4 ppb
2016-07-28Q163087800223.1 ppb
2016-07-28Q163087800124.9 ppb
2016-10-31Q1646850003ND
2016-10-31Q164685000224.3 ppb
2016-10-31Q1646850004ND
2016-10-31Q16468500013.12 ppb
2017-01-18Q17022820042.91 ppb
2017-01-18Q1702282003ND
2017-01-18Q17022820021.17 ppb
2017-01-18Q1702282001ND
2017-04-12Q1714906004ND
2017-04-12Q17149060031.16 ppb
2017-04-12Q1714906002ND
2017-04-12Q1714906001ND
2017-07-06Q17275270022.56 ppb
2017-07-06Q172752700116.2 ppb
2017-07-06Q172752700317.1 ppb
2017-07-10Q172923900121.5 ppb
2017-11-02Q17564790026.02 ppb
2017-11-02Q1756479004ND
2017-11-02Q17564790033.68 ppb
2017-11-02Q17564790011.34 ppb
2018-02-07Q1805393005ND
2018-02-07Q1805393004ND
2018-02-07Q1805393003ND
2018-02-07Q1805393002ND
2018-05-07Q181850400220.5 ppb
2018-05-07Q181850400320.1 ppb
2018-05-07Q181850400415.7 ppb
2018-05-07Q181850400119.2 ppb
2018-07-25Q182984500321.7 ppb
2018-07-25Q182984500210.8 ppb
2018-07-25Q182984500118.0 ppb
2018-07-25Q182984500433.8 ppb
2018-10-29Q18438020048.72 ppb
2018-10-29Q1843802003ND
2018-10-29Q184380200210.6 ppb
2018-10-29Q1843802001ND
2019-02-06Q1905872004ND
2019-02-06Q1905872002ND
2019-02-06Q1905872003ND
2019-02-06Q1905872005ND
2019-05-13Q19243000051.16 ppb
2019-05-13Q1924300004ND
2019-05-13Q19243000031.12 ppb
2019-05-13Q19243000021.06 ppb
2019-08-07Q19529130041.60 ppb
2019-08-07Q1952913003ND
2019-08-07Q19529130021.64 ppb
2019-08-07Q1952913001ND
2019-11-22Q1978246001ND
2019-11-22Q19782460041.67 ppb
2019-11-22Q1978246003ND
2019-11-22Q19782460021.41 ppb