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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Kennett

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

 

98

Samples

0

Samples exceeding legal limit (MCL)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.692 ppb226ND - 5.40 ppb
20151.11 ppb175ND - 7.28 ppb
20160.925 ppb226ND - 6.20 ppb
20170.711 ppb236ND - 5.25 ppb
20183.07 ppb661.31 ppb - 5.43 ppb
20193.43 ppb87ND - 7.61 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
2014-02-05AC17618ND
2014-02-05AC176171.80 ppb
2014-02-05AC17621ND
2014-02-05AC17619ND
2014-02-05AC17620ND
2014-05-01AC22460ND
2014-05-01AC22461ND
2014-05-01AC22462ND
2014-05-01AC22463ND
2014-05-01AC224641.69 ppb
2014-07-23AC30027ND
2014-07-23AC30028ND
2014-07-23AC30026ND
2014-07-23AC300251.50 ppb
2014-07-23AC30024ND
2014-10-16AC378915.40 ppb
2014-10-16AC378922.94 ppb
2014-10-29AC372781.90 ppb
2014-10-29AC37279ND
2014-10-29AC37280ND
2014-10-29AC37281ND
2014-10-29AC37282ND
2015-05-14AC50746ND
2015-05-14AC50748ND
2015-05-14AC507493.07 ppb
2015-05-14AC50750ND
2015-05-14AC50747ND
2015-08-04AC55420ND
2015-08-04AC554222.82 ppb
2015-08-04AC55418ND
2015-08-04AC55419ND
2015-08-04AC55421ND
2015-08-21AC574087.28 ppb
2015-08-21AC574093.38 ppb
2015-10-28AC61949ND
2015-10-28AC619462.32 ppb
2015-10-28AC61947ND
2015-10-28AC61945ND
2015-10-28AC61948ND
2016-02-02AC65717ND
2016-02-02AC65718ND
2016-02-02AC65716ND
2016-02-02AC657152.96 ppb
2016-02-02AC65714ND
2016-05-02AC70008ND
2016-05-02AC70006ND
2016-05-02AC700053.05 ppb
2016-05-02AC70007ND
2016-05-02AC70009ND
2016-07-22AC797906.20 ppb
2016-07-22AC797913.82 ppb
2016-08-04AC80709ND
2016-08-04AC80706ND
2016-08-04AC807082.14 ppb
2016-08-04AC80707ND
2016-08-04AC80705ND
2016-10-27AC85954ND
2016-10-27AC85951ND
2016-10-27AC85950ND
2016-10-27AC859522.18 ppb
2016-10-27AC85953ND
2017-01-23AC89831ND
2017-01-23AC89829ND
2017-01-23AC898321.41 ppb
2017-01-23AC89830ND
2017-01-23AC89833ND
2017-04-26AC95076ND
2017-04-26AC95078ND
2017-04-26AC95079ND
2017-04-26AC95075ND
2017-04-26AC950772.20 ppb
2017-06-14AC99433ND
2017-07-18AD023842.35 ppb
2017-07-18AD02382ND
2017-07-18AD02380ND
2017-07-18AD02383ND
2017-07-18AD02381ND
2017-08-22AD034102.66 ppb
2017-08-22AD034095.25 ppb
2017-10-24AD08583ND
2017-10-24AD08584ND
2017-10-24AD08582ND
2017-10-24AD08581ND
2017-10-24AD085852.48 ppb
2018-01-22AD120531.53 ppb
2018-05-03AD186692.08 ppb
2018-07-12AD295861.31 ppb
2018-08-20AD312035.19 ppb
2018-08-20AD312045.43 ppb
2018-10-15AD350662.90 ppb
2019-01-10AD383782.97 ppb
2019-04-09AD466653.08 ppb
2019-08-06AD527141.77 ppb
2019-08-27AD539327.61 ppb
2019-08-27AD539337.14 ppb
2019-11-06AD573731.90 ppb
2019-12-04AD592842.94 ppb
2019-12-04AD59285ND