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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Hanover Suburban Water System

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

 

190

Samples

0

Samples exceeding legal limit (MCL)

113

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.627 ppb3318ND - 3.70 ppb
20150.470 ppb3320ND - 1.50 ppb
20160.445 ppb3320ND - 1.30 ppb
20170.948 ppb2518ND - 2.30 ppb
20180.512 ppb3319ND - 1.50 ppb
20190.555 ppb3318ND - 2.70 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
2014-01-27E131204630ND
2014-01-27E131204648ND
2014-01-27E1312046330.600 ppb
2014-01-27E1312046430.500 ppb
2014-01-27E131204637ND
2014-01-27E131204636ND
2014-01-27E131204649ND
2014-01-27E131204642ND
2014-02-04E131204645ND
2014-04-09E1402036170.900 ppb
2014-04-09E140203624ND
2014-04-09E140203623ND
2014-04-09E1402036210.600 ppb
2014-04-09E140203622ND
2014-04-09E140203626ND
2014-04-09E140203631ND
2014-04-09E140203627ND
2014-07-09E1407006501.80 ppb
2014-07-09E1407006451.60 ppb
2014-07-09E1407006530.900 ppb
2014-07-09E1407006470.800 ppb
2014-07-09E1407006560.600 ppb
2014-07-09E140700643ND
2014-07-09E1407006510.500 ppb
2014-07-09E140700646ND
2014-10-02E1408025461.000 ppb
2014-10-02E1408025443.70 ppb
2014-10-02E1408025383.40 ppb
2014-10-02E1408025501.50 ppb
2014-10-02E1408025490.700 ppb
2014-10-02E1408025450.600 ppb
2014-10-02E1408025420.500 ppb
2014-10-02E1408025520.500 ppb
2015-01-26VA010-DCLS1.000 ppb
2015-01-26VA010-DCLS0.800 ppb
2015-01-26VA010-DCLS0.500 ppb
2015-01-26VA010-DCLS0.500 ppb
2015-01-26VA010-DCLSND
2015-01-26VA010-DCLSND
2015-01-26VA010-DCLSND
2015-01-26VA010-DCLSND
2015-01-28VA010-DCLSND
2015-04-23VA010-DCLS0.700 ppb
2015-04-23VA010-DCLS0.600 ppb
2015-04-23VA010-DCLS0.600 ppb
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-07-15VA010-DCLS1.50 ppb
2015-07-15VA010-DCLS1.20 ppb
2015-07-15VA010-DCLS1.10 ppb
2015-07-15VA010-DCLS0.800 ppb
2015-07-15VA010-DCLS0.800 ppb
2015-07-15VA010-DCLS0.800 ppb
2015-07-15VA010-DCLS0.600 ppb
2015-07-15VA010-DCLSND
2015-10-15VA010-DCLS0.800 ppb
2015-10-15VA010-DCLS0.800 ppb
2015-10-15VA010-DCLS0.700 ppb
2015-10-15VA010-DCLS0.600 ppb
2015-10-15VA010-DCLS0.600 ppb
2015-10-15VA010-DCLS0.500 ppb
2015-10-15VA010-DCLSND
2015-10-15VA010-DCLSND
2016-01-20E1512014350.700 ppb
2016-01-20E1512014190.600 ppb
2016-01-20E151201415ND
2016-01-20E151201434ND
2016-01-20E151201422ND
2016-01-20E151201426ND
2016-01-20E151201413ND
2016-01-20E151201436ND
2016-02-16E1512014320.500 ppb
2016-04-05E1602059900.700 ppb
2016-04-05E1602059970.700 ppb
2016-04-05E1602060020.700 ppb
2016-04-05E1602059910.600 ppb
2016-04-05E1602059940.600 ppb
2016-04-05E1602060010.500 ppb
2016-04-05E160205992ND
2016-04-05E160206004ND
2016-07-14E1606014141.30 ppb
2016-07-14E1606014051.20 ppb
2016-07-14E1606014130.800 ppb
2016-07-14E1606014160.700 ppb
2016-07-14E1606014010.600 ppb
2016-07-14E1606014080.600 ppb
2016-07-14E1606014100.500 ppb
2016-07-14E1606014180.500 ppb
2016-10-20E1609054711.10 ppb
2016-10-20E1609054790.900 ppb
2016-10-20E1609054640.900 ppb
2016-10-20E160905466ND
2016-10-20E160905476ND
2016-10-20E160905475ND
2016-10-20E160905472ND
2016-10-20E160905474ND
2017-01-26E161204730ND
2017-04-121706401TTHM0.900 ppb
2017-04-121706399THM0.600 ppb
2017-04-121706395THMND
2017-04-121706396THMND
2017-04-121706397THMND
2017-04-121706398THMND
2017-04-121706400THMND
2017-04-121706394THMND
2017-07-1117-12083TTHM1.80 ppb
2017-07-1117-12084TTHM1.70 ppb
2017-07-1117-12082TTHM1.60 ppb
2017-07-1117-12079TTHM1.40 ppb
2017-07-1117-12080TTHM0.900 ppb
2017-07-1117-12081TTHM0.900 ppb
2017-07-1117-12077TTHM0.800 ppb
2017-07-1117-12078TTHM0.700 ppb
2017-10-0617-18667TTHM2.30 ppb
2017-10-0617-18668TTHM2.30 ppb
2017-10-0617-18666TTHM2.10 ppb
2017-10-0617-18669TTHM2.00 ppb
2017-10-0617-18664TTHM1.000 ppb
2017-10-0617-18665TTHM1.000 ppb
2017-10-0617-18662TTHM0.900 ppb
2017-10-0617-18663TTHM0.800 ppb
2018-01-1718-01153TTHMND
2018-01-1718-01154THMND
2018-01-1718-01155THMND
2018-01-1718-01156TTHMND
2018-01-1718-01157TTHM0.600 ppb
2018-01-1718-01158TTHM0.600 ppb
2018-01-1718-01159TTHM1.50 ppb
2018-01-1718-01160TTHM1.40 ppb
2018-02-06E171204547ND
2018-04-1618-06797TTHMND
2018-04-1618-06798TTHMND
2018-04-1618-06799TTHM1.40 ppb
2018-04-1618-06800TTHM1.40 ppb
2018-04-1618-06801TTHMND
2018-04-1618-06802TTHMND
2018-04-1618-06803TTHMND
2018-04-1618-06804TTHMND
2018-07-1118-13808-THM1.40 ppb
2018-07-1118-13809-THMND
2018-07-1118-13810-THM0.600 ppb
2018-07-1118-13811-THM0.500 ppb
2018-07-1118-13812-THM0.600 ppb
2018-07-1118-13813-THM0.600 ppb
2018-07-1118-13814-THM0.900 ppb
2018-07-1118-13815-THM1.10 ppb
2018-10-0918-20164-THM0.700 ppb
2018-10-0918-20165-THM0.500 ppb
2018-10-0918-20166-TTM0.900 ppb
2018-10-0918-20167-THM0.700 ppb
2018-10-0918-20168-THM0.800 ppb
2018-10-0918-20169-THMND
2018-10-0918-20170-THM0.700 ppb
2018-10-0918-20171-THMND
2019-01-10E181203712ND
2019-01-10E181203714ND
2019-01-10E181203720ND
2019-01-10E181203726ND
2019-01-10E181203728ND
2019-01-10E181203729ND
2019-01-10E181203731ND
2019-01-10E181203732ND
2019-03-20E181203721ND
2019-04-10E190306451ND
2019-04-10E1903064520.600 ppb
2019-04-10E190306455ND
2019-04-10E190306457ND
2019-04-10E1903064590.600 ppb
2019-04-10E190306460ND
2019-04-10E190306463ND
2019-04-10E190306465ND
2019-07-17E1907025580.700 ppb
2019-07-17E1907025590.600 ppb
2019-07-17E1907025610.600 ppb
2019-07-17E1907025651.30 ppb
2019-07-17E1907025671.30 ppb
2019-07-17E1907025691.000 ppb
2019-07-17E1907025710.500 ppb
2019-07-17E1907025730.700 ppb
2019-10-15E1910030610.700 ppb
2019-10-15E1910030632.10 ppb
2019-10-15E1910030642.10 ppb
2019-10-15E1910030652.70 ppb
2019-10-15E1910030670.800 ppb
2019-10-15E1910030690.700 ppb
2019-10-15E1910030710.700 ppb
2019-10-15E1910030720.600 ppb