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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Warminster Municipal Authority

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

90

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.34 ppb1615ND - 4.70 ppb
20152.79 ppb16160.770 ppb - 7.90 ppb
20163.06 ppb16160.830 ppb - 8.50 ppb
20172.02 ppb16160.560 ppb - 4.40 ppb
20182.74 ppb16161.40 ppb - 4.00 ppb
20191.55 ppb1611ND - 4.70 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
2014-02-1910726990042.50 ppb
2014-02-1910726990032.30 ppb
2014-02-191072699001ND
2014-02-1910726990020.910 ppb
2014-05-2020078510043.40 ppb
2014-05-2020078510034.70 ppb
2014-05-2020078510010.530 ppb
2014-05-2020078510021.10 ppb
2014-08-1920247290034.20 ppb
2014-08-1920247290044.30 ppb
2014-08-1920247290021.60 ppb
2014-09-0520276700010.820 ppb
2014-11-1720407200021.90 ppb
2014-11-1720407200044.70 ppb
2014-11-1720407200010.900 ppb
2014-11-1720407200033.60 ppb
2015-02-18123894232.50 ppb
2015-02-18123894110.770 ppb
2015-02-18123894172.30 ppb
2015-02-18123894051.10 ppb
2015-05-18127375493.70 ppb
2015-05-18127375371.10 ppb
2015-05-18127375433.10 ppb
2015-05-18127375311.20 ppb
2015-08-19131227541.80 ppb
2015-08-19131227601.40 ppb
2015-08-19131227727.90 ppb
2015-08-19131227666.00 ppb
2015-11-20135023631.60 ppb
2015-11-20135023571.10 ppb
2015-11-20135023754.90 ppb
2015-11-20135023694.10 ppb
2016-02-18138577970.830 ppb
2016-02-18138577912.20 ppb
2016-02-18138578032.70 ppb
2016-02-18138578092.60 ppb
2016-05-18142362980.980 ppb
2016-05-18142362924.60 ppb
2016-05-18142362863.80 ppb
2016-05-18142362791.50 ppb
2016-08-23147194622.90 ppb
2016-08-23147194568.50 ppb
2016-08-23147194746.90 ppb
2016-08-23147194681.20 ppb
2016-11-21152129442.60 ppb
2016-11-21152129501.30 ppb
2016-11-21152129563.40 ppb
2016-11-21157786443.00 ppb
2017-02-21156423841.30 ppb
2017-02-21156423900.770 ppb
2017-02-21156424021.20 ppb
2017-02-21156423961.40 ppb
2017-05-17160797102.30 ppb
2017-05-17160797160.560 ppb
2017-05-17160797282.20 ppb
2017-05-17160797221.90 ppb
2017-08-23165502011.90 ppb
2017-08-23165502074.40 ppb
2017-08-23165502193.20 ppb
2017-08-23165502143.60 ppb
2017-11-20170103651.60 ppb
2017-11-20170103472.70 ppb
2017-11-20170103590.940 ppb
2017-11-20170103532.30 ppb
2018-02-1922968530033.30 ppb
2018-02-1922968530022.10 ppb
2018-02-1922968530013.60 ppb
2018-02-1922968530043.30 ppb
2018-05-2223166740073.30 ppb
2018-05-2223166740033.40 ppb
2018-05-2223166740054.00 ppb
2018-05-2223166740013.70 ppb
2018-08-1723336240013.60 ppb
2018-08-1723336240021.50 ppb
2018-08-1723336240032.70 ppb
2018-08-1723336240041.40 ppb
2018-11-2030021700032.00 ppb
2018-11-2030021700012.60 ppb
2018-11-2030021700041.60 ppb
2018-11-2030021700021.80 ppb
2019-02-183017873001ND
2019-02-183017873003ND
2019-02-183017873004ND
2019-02-183017873002ND
2019-05-213035118002ND
2019-05-2130351180031.60 ppb
2019-05-2130351180011.90 ppb
2019-06-0430374950012.40 ppb
2019-08-2030536200012.20 ppb
2019-08-2130536210011.40 ppb
2019-08-2130536210034.70 ppb
2019-08-2130536210023.00 ppb
2019-11-1930713090031.80 ppb
2019-11-1930713090021.90 ppb
2019-11-1930713090012.40 ppb
2019-11-1930713090041.50 ppb