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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Paris

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

82

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.27 ppb17172.30 ppb - 4.30 ppb
20152.06 ppb17171.70 ppb - 2.60 ppb
20160.647 ppb178ND - 1.81 ppb
20171.11 ppb1715ND - 1.42 ppb
20181.15 ppb1713ND - 1.68 ppb
20191.28 ppb1712ND - 1.99 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
2014-03-20Q14091360012.30 ppb
2014-03-20Q14091360022.40 ppb
2014-03-20Q14091360032.30 ppb
2014-03-20Q14091360042.30 ppb
2014-04-21Q14125120013.40 ppb
2014-04-21Q14125120023.40 ppb
2014-04-25Q14136420013.60 ppb
2014-04-25Q14136420023.60 ppb
2014-07-22Q14300880013.51 ppb
2014-07-22Q14300880033.70 ppb
2014-07-22Q14300880044.20 ppb
2014-07-22Q14300880054.30 ppb
2014-07-22Q14300880063.60 ppb
2014-10-14Q14523360013.10 ppb
2014-10-14Q14523360023.30 ppb
2014-10-14Q14523360033.40 ppb
2014-10-14Q14523360043.10 ppb
2015-01-26Q15027310052.30 ppb
2015-01-26Q15027310062.60 ppb
2015-01-26Q15027310072.30 ppb
2015-01-26Q15027310082.30 ppb
2015-04-13Q15135620012.05 ppb
2015-04-13Q15135620022.01 ppb
2015-04-13Q15135620032.18 ppb
2015-04-13Q15135620041.89 ppb
2015-07-27Q15290870061.76 ppb
2015-07-27Q15290870012.06 ppb
2015-07-27Q15290870021.91 ppb
2015-07-27Q15290870031.70 ppb
2015-07-27Q15290870041.76 ppb
2015-11-24Q15467910012.26 ppb
2015-11-24Q15467910022.08 ppb
2015-11-24Q15467910031.99 ppb
2015-11-24Q15467910041.84 ppb
2016-01-13Q1601286008ND
2016-01-13Q1601286009ND
2016-01-13Q1601286010ND
2016-01-13Q1601286011ND
2016-05-12Q16190280011.06 ppb
2016-05-12Q1619028002ND
2016-05-12Q1619028003ND
2016-05-12Q1619028004ND
2016-07-18Q16290120011.06 ppb
2016-07-18Q1629012003ND
2016-07-18Q1629012004ND
2016-07-18Q16290120051.01 ppb
2016-07-18Q16290120061.01 ppb
2016-11-02Q16471850011.75 ppb
2016-11-02Q16471850021.81 ppb
2016-11-02Q16471850041.75 ppb
2016-11-02Q16471850031.55 ppb
2017-01-19Q17025710031.29 ppb
2017-01-19Q17025710011.42 ppb
2017-01-19Q17025710041.42 ppb
2017-01-19Q17025710021.37 ppb
2017-05-02Q17180320011.17 ppb
2017-05-02Q17180320021.20 ppb
2017-05-02Q17180320031.28 ppb
2017-05-02Q17180320041.08 ppb
2017-07-19Q1729694006ND
2017-07-19Q17296940031.18 ppb
2017-07-19Q17296940011.31 ppb
2017-07-19Q17296940041.21 ppb
2017-07-19Q17296940021.20 ppb
2017-11-09Q17576250061.36 ppb
2017-11-09Q1757625003ND
2017-11-09Q17576250071.28 ppb
2017-11-09Q17576250041.18 ppb
2018-01-29Q18032630051.34 ppb
2018-01-29Q18032630071.46 ppb
2018-01-29Q18032630061.22 ppb
2018-01-29Q18032630081.34 ppb
2018-04-04Q1813945003ND
2018-04-04Q1813945001ND
2018-04-04Q1813945002ND
2018-04-04Q1813945004ND
2018-07-10Q18270610021.56 ppb
2018-07-10Q18270610031.58 ppb
2018-07-10Q18270610041.68 ppb
2018-07-10Q18270610051.66 ppb
2018-07-10Q18270610061.67 ppb
2018-11-27Q18480220011.55 ppb
2018-11-27Q18480220021.61 ppb
2018-11-27Q18480220031.48 ppb
2018-11-27Q18480220041.40 ppb
2019-01-30Q1904514009ND
2019-01-30Q1904514010ND
2019-01-30Q1904514011ND
2019-01-30Q1904514012ND
2019-04-10Q19144400011.99 ppb
2019-04-10Q19144400021.70 ppb
2019-04-10Q19144400031.84 ppb
2019-04-10Q19144400041.64 ppb
2019-07-29Q1948289005ND
2019-07-29Q19482890011.65 ppb
2019-07-29Q19482890021.76 ppb
2019-07-29Q19482890031.81 ppb
2019-07-29Q19482890041.89 ppb
2019-10-07Q19713490011.91 ppb
2019-10-07Q19713490021.87 ppb
2019-10-07Q19713490031.79 ppb
2019-10-07Q19713490041.97 ppb