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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Sweetwater

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

53

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.91 ppb1710ND - 5.50 ppb
20150.468 ppb174ND - 2.58 ppb
20161.98 ppb1716ND - 3.00 ppb
20170.921 ppb177ND - 3.70 ppb
20180.750 ppb177ND - 3.14 ppb
20190.959 ppb179ND - 2.79 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
2014-02-19Q1405568001ND
2014-02-19Q1405568002ND
2014-02-19Q14055680033.55 ppb
2014-02-19Q1405568004ND
2014-05-06Q14147270031.40 ppb
2014-05-06Q14147270041.80 ppb
2014-05-06Q14147270052.50 ppb
2014-05-06Q14147270061.90 ppb
2014-08-28Q14400930052.92 ppb
2014-08-28Q14400930013.70 ppb
2014-08-28Q14400930025.50 ppb
2014-08-28Q14400930034.90 ppb
2014-08-28Q14400930044.30 ppb
2014-11-24Q1457322001ND
2014-11-24Q1457322002ND
2014-11-24Q1457322003ND
2014-11-24Q1457322004ND
2015-02-11Q1505778005ND
2015-02-11Q1505778006ND
2015-02-11Q1505778007ND
2015-02-11Q1505778008ND
2015-06-17Q1522698001ND
2015-06-17Q1522698002ND
2015-06-17Q1522698003ND
2015-06-17Q1522698004ND
2015-08-04Q15303200051.000 ppb
2015-08-04Q1530320001ND
2015-08-04Q15303200022.35 ppb
2015-08-04Q1530320003ND
2015-08-04Q1530320004ND
2015-11-23Q1546368001ND
2015-11-23Q1546368002ND
2015-11-23Q15463680032.58 ppb
2015-11-23Q15463680042.02 ppb
2016-02-03Q16046960031.36 ppb
2016-02-03Q16046960041.46 ppb
2016-02-03Q16046960051.15 ppb
2016-02-03Q1604696006ND
2016-06-21Q16257380012.79 ppb
2016-06-21Q16257380023.00 ppb
2016-06-21Q16257380032.40 ppb
2016-06-21Q16257380042.31 ppb
2016-09-22Q16396290012.60 ppb
2016-09-22Q16396290031.71 ppb
2016-09-22Q16396290042.66 ppb
2016-09-22Q16396290052.93 ppb
2016-09-22Q16396290062.93 ppb
2016-12-13Q16542190011.44 ppb
2016-12-13Q16542190021.32 ppb
2016-12-13Q16542190032.36 ppb
2016-12-13Q16542190041.16 ppb
2017-02-21Q1707286005ND
2017-02-21Q1707286006ND
2017-02-21Q1707286007ND
2017-02-21Q1707286008ND
2017-05-16Q1719907001ND
2017-05-16Q1719907004ND
2017-05-16Q1719907002ND
2017-05-16Q1719907003ND
2017-09-21Q17458430011.43 ppb
2017-09-21Q17458430032.17 ppb
2017-09-21Q17458430043.70 ppb
2017-09-21Q17458430052.58 ppb
2017-09-21Q17458430062.81 ppb
2017-12-04Q1762012001ND
2017-12-04Q1762012002ND
2017-12-04Q17620120031.51 ppb
2017-12-04Q17620120041.46 ppb
2018-03-07Q18093690041.45 ppb
2018-03-07Q18093690051.95 ppb
2018-03-07Q18093690061.64 ppb
2018-03-07Q18093690071.57 ppb
2018-06-07Q1822852001ND
2018-06-07Q1822852003ND
2018-06-07Q1822852004ND
2018-06-07Q1822852002ND
2018-09-13Q1836453001ND
2018-09-13Q1836453004ND
2018-09-13Q1836453005ND
2018-09-13Q1836453006ND
2018-09-13Q1836453007ND
2018-12-11Q18509250031.28 ppb
2018-12-11Q18509250011.72 ppb
2018-12-11Q18509250043.14 ppb
2018-12-11Q1850925002ND
2019-03-07Q1909995004ND
2019-03-07Q19099950101.38 ppb
2019-03-07Q19099950051.66 ppb
2019-03-07Q1909995011ND
2019-05-23Q19282290012.79 ppb
2019-05-23Q19282290022.52 ppb
2019-05-23Q19282290031.53 ppb
2019-05-23Q19282290042.20 ppb
2019-08-21Q1957864001ND
2019-08-21Q1957864004ND
2019-08-21Q19578640051.57 ppb
2019-08-21Q1957864006ND
2019-08-21Q19578640071.40 ppb
2019-12-03Q1978588001ND
2019-12-03Q1978588002ND
2019-12-03Q19785880031.25 ppb
2019-12-03Q1978588004ND