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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

Calico Rock

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

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34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND50ND
2016ND70ND
2017ND70ND
2018ND60ND
2019ND50ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-2714149007301ND
2014-08-2514239002901ND
2014-08-2514239002601ND
2014-08-2514239002701ND
2015-04-1415106002801ND
2015-07-1415196001001ND
2015-07-1415196001101ND
2015-07-1415196001201ND
2015-10-1415289005801ND
2016-01-1316015011301ND
2016-04-1216105010101ND
2016-04-1216105010002ND
2016-07-1216196017901ND
2016-07-1216196017601ND
2016-07-1216196017501ND
2016-10-1116287009801ND
2017-01-1017012010001ND
2017-04-1117103002401ND
2017-04-1117103002501ND
2017-07-1117194010001ND
2017-07-1117194009701ND
2017-07-1117194009801ND
2017-10-1017285011701ND
2018-04-1118102006101ND
2018-04-1118102006001ND
2018-07-1018193011601ND
2018-07-1018193011201ND
2018-07-1018193011501ND
2018-10-0918284008101ND
2019-01-1519016002501ND
2019-08-2619240000301ND
2019-08-2619240000601ND
2019-08-2619240000401ND
2019-10-0819282002201ND