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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Town of Princess Anne

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND20ND
2014ND40ND
2015N/A00N/A
201612.4 ppb442.60 ppb - 16.0 ppb
20174.58 ppb106ND - 11.0 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
2012-02-080190002_07_00424ND
2012-02-080190002_08_00424ND
2012-05-170190002_08_00593ND
2012-05-170190002_07_00593ND
2012-07-260190002_07_00312ND
2012-07-260190002_08_00312ND
2012-10-310190002_07_21890ND
2012-10-310190002_08_21890ND
2013-08-140190002_07_00677ND
2013-08-140190002_08_00677ND
2014-07-280190002_08_00408ND
2014-07-280190002_07_00408ND
2014-09-120190002_07_L5251ND
2014-09-120190002_08_L5251ND
2016-08-180190002_101_081816.0 ppb
2016-08-180190002_102_081815.0 ppb
2016-11-300190002_101_113016.0 ppb
2016-11-300190002_102_11302.60 ppb
2017-02-230190002_102_02236.60 ppb
2017-02-230190002_101_02235.80 ppb
2017-04-04L6753780-1ND
2017-04-19L6769607-2ND
2017-04-19L6769607-1ND
2017-05-300190002_102_05307.80 ppb
2017-05-300190002_101_05306.90 ppb
2017-06-13L6853722-1ND
2017-08-240190002_101_082411.0 ppb
2017-08-240190002_102_08247.70 ppb