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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Sardis Lone Elm WSC

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

 

128

Samples

0

Samples exceeding legal limit (MCL)

101

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20148.30 ppb1815ND - 30.6 ppb
20157.16 ppb2422ND - 32.5 ppb
20163.42 ppb2113ND - 15.0 ppb
20176.42 ppb2219ND - 38.4 ppb
20182.77 ppb2217ND - 9.46 ppb
20192.38 ppb2115ND - 7.81 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
2014-03-17Q14085220082.70 ppb
2014-03-17Q14085220095.10 ppb
2014-03-17Q14085220102.20 ppb
2014-03-17Q14085220012.30 ppb
2014-04-28Q1413518010ND
2014-04-28Q14135180131.69 ppb
2014-04-28Q14135180293.80 ppb
2014-04-28Q141351803315.2 ppb
2014-04-28Q14135180342.10 ppb
2014-04-28Q1413518035ND
2014-07-29Q143169000611.1 ppb
2014-07-29Q143169000717.7 ppb
2014-07-29Q143169000825.7 ppb
2014-07-29Q1431690011ND
2014-10-24Q145404500330.6 ppb
2014-10-24Q145404500424.3 ppb
2014-10-24Q14540450013.50 ppb
2014-10-24Q14540450021.40 ppb
2015-03-17Q150984900322.0 ppb
2015-03-17Q150984900427.6 ppb
2015-03-17Q15098490054.20 ppb
2015-03-17Q1509849006ND
2015-04-20Q15146350141.84 ppb
2015-04-20Q15146350162.14 ppb
2015-04-20Q15146350172.06 ppb
2015-04-20Q15146350201.87 ppb
2015-04-20Q15146350211.01 ppb
2015-04-20Q151463502318.6 ppb
2015-04-20Q151463502413.1 ppb
2015-04-20Q15146350253.34 ppb
2015-04-20Q15146350261.67 ppb
2015-07-22Q15284300011.15 ppb
2015-07-22Q152843000422.5 ppb
2015-07-22Q152843000532.5 ppb
2015-07-22Q15284300061.26 ppb
2015-07-22Q15284300071.85 ppb
2015-09-10Q15352330021.38 ppb
2015-11-19Q15460730014.50 ppb
2015-11-19Q15460730023.38 ppb
2015-11-19Q1546073003ND
2015-11-19Q15460730042.02 ppb
2015-11-19Q15460730061.84 ppb
2016-01-25Q16031270081.000 ppb
2016-01-25Q16031270013.05 ppb
2016-01-25Q16031270041.01 ppb
2016-01-25Q16031270153.06 ppb
2016-01-25Q16031270181.98 ppb
2016-01-25Q1603127019ND
2016-01-25Q1603127020ND
2016-06-23Q162581400115.0 ppb
2016-06-23Q16258140026.17 ppb
2016-06-23Q16258140034.29 ppb
2016-06-23Q16258140046.11 ppb
2016-09-02Q163553300310.4 ppb
2016-09-02Q163553300410.1 ppb
2016-09-02Q16355330012.29 ppb
2016-09-02Q16355330027.41 ppb
2016-10-27Q1645955001ND
2016-10-27Q1645955004ND
2016-10-27Q1645955010ND
2016-10-27Q1645955011ND
2016-10-27Q1645955012ND
2016-10-27Q1645955013ND
2017-02-14Q17063630022.48 ppb
2017-02-14Q17063630032.23 ppb
2017-02-14Q17063630011.91 ppb
2017-02-14Q17063630042.53 ppb
2017-04-06Q1714243032ND
2017-04-06Q17142430262.74 ppb
2017-04-06Q17142430331.49 ppb
2017-04-06Q17142430281.95 ppb
2017-04-06Q17142430352.81 ppb
2017-04-06Q17142430223.92 ppb
2017-04-06Q17142430563.56 ppb
2017-04-06Q17142430231.88 ppb
2017-04-06Q1714243057ND
2017-07-11Q17281570033.90 ppb
2017-07-11Q17281570014.18 ppb
2017-07-11Q17281570044.70 ppb
2017-07-11Q1728157002ND
2017-10-16Q175305500110.2 ppb
2017-10-16Q175305501133.1 ppb
2017-10-16Q175305500538.4 ppb
2017-10-16Q175305501216.9 ppb
2017-10-16Q17530550062.27 ppb
2018-01-11Q1801694012ND
2018-01-11Q1801694015ND
2018-01-11Q1801694017ND
2018-01-11Q18016940181.95 ppb
2018-01-11Q18016940201.30 ppb
2018-01-11Q18016940241.26 ppb
2018-01-11Q18016940251.40 ppb
2018-01-11Q1801694026ND
2018-01-11Q18016940271.09 ppb
2018-05-25Q18211650015.54 ppb
2018-05-25Q18211650025.82 ppb
2018-05-25Q18211650037.82 ppb
2018-05-25Q18211650041.33 ppb
2018-08-27Q18341760024.72 ppb
2018-08-27Q18341760076.15 ppb
2018-08-27Q18341760045.95 ppb
2018-08-27Q18341760089.46 ppb
2018-08-27Q18341760051.70 ppb
2018-11-07Q18445960012.11 ppb
2018-11-07Q1844596002ND
2018-11-07Q18445960031.95 ppb
2018-11-07Q18445960041.45 ppb
2019-02-12Q19062790011.62 ppb
2019-02-12Q19062790021.85 ppb
2019-02-12Q1906279003ND
2019-02-12Q1906279004ND
2019-04-18Q19158750031.61 ppb
2019-04-18Q1915875017ND
2019-04-18Q1915875005ND
2019-04-18Q19158750201.74 ppb
2019-04-18Q19158750081.96 ppb
2019-04-18Q19158750321.34 ppb
2019-04-18Q1915875016ND
2019-04-18Q19158750334.43 ppb
2019-04-18Q19158750061.60 ppb
2019-07-25Q19477210014.48 ppb
2019-07-25Q19477210024.81 ppb
2019-07-25Q19477210035.40 ppb
2019-07-25Q19477210041.35 ppb
2019-12-10Q19797680017.81 ppb
2019-12-10Q19797680027.73 ppb
2019-12-10Q19797680032.35 ppb
2019-12-10Q1979768004ND