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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Ardmore

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

49

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201412.4 ppb16165.37 ppb - 17.1 ppb
20152.53 ppb16161.06 ppb - 5.15 ppb
20160.565 ppb209ND - 1.96 ppb
2017ND160ND
20180.647 ppb165ND - 2.56 ppb
20191.77 ppb203ND - 17.7 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
2014-02-1114022295.37 ppb
2014-02-1114022308.15 ppb
2014-02-1114022319.02 ppb
2014-02-1114022326.39 ppb
2014-05-13140545510.9 ppb
2014-05-13140545610.7 ppb
2014-05-1314054579.85 ppb
2014-05-13140545811.2 ppb
2014-08-12140838016.4 ppb
2014-08-12140838116.2 ppb
2014-08-12140838216.6 ppb
2014-08-12140838317.1 ppb
2014-11-13141138912.6 ppb
2014-11-13141139015.8 ppb
2014-11-13141139115.7 ppb
2014-11-13141139216.3 ppb
2015-02-1015024024.47 ppb
2015-02-1015024034.40 ppb
2015-02-1015024045.15 ppb
2015-02-1015024055.00 ppb
2015-05-1215054421.99 ppb
2015-05-1215054432.07 ppb
2015-05-1215054442.20 ppb
2015-05-1215054452.21 ppb
2015-08-1115083461.27 ppb
2015-08-1115083471.06 ppb
2015-08-1115083481.45 ppb
2015-08-1115083491.17 ppb
2015-11-1715115092.70 ppb
2015-11-1715115101.21 ppb
2015-11-1715115111.86 ppb
2015-11-1715115122.31 ppb
2016-02-0916023531.02 ppb
2016-02-0916023540.850 ppb
2016-02-0916023551.02 ppb
2016-02-0916023560.890 ppb
2016-05-1016053371.96 ppb
2016-05-1016053381.59 ppb
2016-05-1016053391.68 ppb
2016-05-1016053401.68 ppb
2016-05-261605682ND
2016-05-261605683ND
2016-05-261605684ND
2016-05-261605685ND
2016-08-091608262ND
2016-08-091608263ND
2016-08-091608264ND
2016-08-091608265ND
2016-11-0116110740.600 ppb
2016-11-011611075ND
2016-11-011611076ND
2016-11-011611077ND
2017-02-161702544ND
2017-02-161702545ND
2017-02-161702546ND
2017-02-161702547ND
2017-05-181705572ND
2017-05-181705573ND
2017-05-181705574ND
2017-05-181705575ND
2017-08-021708028ND
2017-08-021708029ND
2017-08-021708030ND
2017-08-021708031ND
2017-11-141711424ND
2017-11-141711425ND
2017-11-141711426ND
2017-11-141711427ND
2018-02-201802562ND
2018-02-2018025631.18 ppb
2018-02-201802564ND
2018-02-201802565ND
2018-05-151805479ND
2018-05-151805480ND
2018-05-151805481ND
2018-05-151805482ND
2018-08-21180811242.56 ppb
2018-08-21180811252.33 ppb
2018-08-21180811262.12 ppb
2018-08-21180811272.16 ppb
2018-11-271811685ND
2018-11-271811686ND
2018-11-271811687ND
2018-11-271811688ND
2019-02-12190239016.2 ppb
2019-02-121902391ND
2019-02-1219023921.55 ppb
2019-02-12190239317.7 ppb
2019-02-281902690ND
2019-02-281902691ND
2019-02-281902692ND
2019-02-281902693ND
2019-05-161905521ND
2019-05-161905522ND
2019-05-161905523ND
2019-05-161905524ND
2019-08-211908621ND
2019-08-211908622ND
2019-08-211908623ND
2019-08-211908624ND
2019-11-191911603ND
2019-11-191911604ND
2019-11-191911605ND
2019-11-191911606ND