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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Henderson

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

 

131

Samples

0

Samples exceeding legal limit (MCL)

92

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201419.1 ppb1917ND - 53.1 ppb
201510.8 ppb2117ND - 34.4 ppb
20166.88 ppb2011ND - 25.1 ppb
20177.05 ppb2614ND - 28.1 ppb
20188.75 ppb2316ND - 21.6 ppb
201910.8 ppb2217ND - 33.9 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
2014-01-23Q14022430105.59 ppb
2014-02-13Q140457900225.1 ppb
2014-02-13Q14045790039.04 ppb
2014-02-13Q14045790047.67 ppb
2014-02-13Q1404579005ND
2014-04-09Q141133400725.4 ppb
2014-04-09Q14113340084.00 ppb
2014-04-09Q141133400922.6 ppb
2014-04-09Q14113340104.50 ppb
2014-07-30Q143211400140.0 ppb
2014-07-30Q143211400353.1 ppb
2014-07-30Q143211400413.1 ppb
2014-07-30Q143211400532.2 ppb
2014-07-30Q143211400633.7 ppb
2014-10-08Q1451902002ND
2014-10-08Q145190201030.0 ppb
2014-10-08Q145190201114.8 ppb
2014-10-08Q145190201222.7 ppb
2014-10-08Q145190201319.9 ppb
2015-01-14Q15008390066.42 ppb
2015-01-14Q1500839010ND
2015-01-14Q150083900216.8 ppb
2015-01-14Q15008390038.50 ppb
2015-01-14Q150083900416.3 ppb
2015-01-14Q15008390059.80 ppb
2015-04-08Q151316300112.7 ppb
2015-04-08Q15131630024.34 ppb
2015-04-08Q15131630039.32 ppb
2015-04-08Q15131630049.77 ppb
2015-05-20Q1518661002ND
2015-05-20Q1518661004ND
2015-09-02Q153430300130.9 ppb
2015-09-02Q153430300334.4 ppb
2015-09-02Q153430300410.4 ppb
2015-09-02Q153430300510.2 ppb
2015-09-02Q15343030067.64 ppb
2015-11-16Q154489200124.9 ppb
2015-11-16Q15448920028.29 ppb
2015-11-16Q15448920036.26 ppb
2015-11-16Q1544892004ND
2016-01-27Q1603640014ND
2016-01-27Q1603640017ND
2016-01-27Q160364000719.2 ppb
2016-01-27Q1603640008ND
2016-01-27Q16036400097.43 ppb
2016-01-27Q1603640010ND
2016-04-04Q1613127001ND
2016-04-04Q161312700519.5 ppb
2016-04-04Q1613127006ND
2016-04-04Q16131270076.74 ppb
2016-04-04Q1613127008ND
2016-07-05Q162674500219.6 ppb
2016-07-05Q162674500325.1 ppb
2016-07-05Q16267450045.71 ppb
2016-07-05Q16267450052.40 ppb
2016-07-05Q16267450061.96 ppb
2016-11-29Q165168900421.7 ppb
2016-11-29Q1651689002ND
2016-11-29Q16516890058.25 ppb
2016-11-29Q1651689003ND
2017-02-02Q170469800521.3 ppb
2017-02-02Q1704698006ND
2017-02-02Q17046980074.31 ppb
2017-02-02Q17046980081.18 ppb
2017-04-17Q1715499001ND
2017-04-17Q1715499003ND
2017-04-17Q1715499006ND
2017-04-17Q1715499008ND
2017-04-17Q171549904027.3 ppb
2017-04-17Q1715499041ND
2017-04-17Q17154990429.33 ppb
2017-04-17Q1715499043ND
2017-05-19Q1720846005ND
2017-09-14Q174370602328.1 ppb
2017-09-14Q174370602524.7 ppb
2017-09-14Q17437060261.05 ppb
2017-09-14Q174370602722.7 ppb
2017-09-14Q174370602814.5 ppb
2017-09-14Q1743706009ND
2017-09-14Q1743706019ND
2017-12-07Q176385900118.5 ppb
2017-12-07Q17638590021.63 ppb
2017-12-07Q17638590037.70 ppb
2017-12-07Q17638590041.03 ppb
2017-12-07Q1763859018ND
2017-12-07Q1763859016ND
2018-03-13Q1810104001ND
2018-03-13Q1810104003ND
2018-03-13Q181010402121.1 ppb
2018-03-13Q18101040226.64 ppb
2018-03-13Q18101040236.73 ppb
2018-03-13Q18101040242.04 ppb
2018-03-26Q1812036007ND
2018-03-26Q1812036011ND
2018-03-26Q1812036008ND
2018-05-24Q1820944005ND
2018-05-24Q182094400819.8 ppb
2018-05-24Q18209440095.43 ppb
2018-05-24Q182094401018.2 ppb
2018-05-24Q182094401111.3 ppb
2018-07-31Q183020100121.1 ppb
2018-07-31Q18302010054.27 ppb
2018-07-31Q183020100218.9 ppb
2018-07-31Q183020100615.0 ppb
2018-09-11Q183583800117.6 ppb
2018-12-07Q185038100321.6 ppb
2018-12-07Q18503810013.25 ppb
2018-12-07Q18503810048.38 ppb
2018-12-07Q1850381002ND
2019-01-10Q1901410010ND
2019-01-10Q19014100096.38 ppb
2019-01-10Q190141000620.0 ppb
2019-01-10Q1901410018ND
2019-01-10Q190141000714.4 ppb
2019-01-10Q19014100192.81 ppb
2019-04-30Q1917254005ND
2019-04-30Q191725400614.2 ppb
2019-04-30Q19172540037.61 ppb
2019-04-30Q19172540078.94 ppb
2019-04-30Q19172540014.71 ppb
2019-07-30Q1948582009ND
2019-07-30Q1948582007ND
2019-07-30Q194858200525.4 ppb
2019-07-30Q194858200133.9 ppb
2019-07-30Q19485820029.71 ppb
2019-07-30Q194858200319.5 ppb
2019-07-30Q19485820048.53 ppb
2019-12-17Q198033500430.4 ppb
2019-12-17Q19803350017.64 ppb
2019-12-17Q198033500218.2 ppb
2019-12-17Q19803350034.71 ppb