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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Charles Town Utilities

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
20190.0750 ppb162ND - 0.630 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2014-02-11S2THM_21404334ND
2014-02-11S2THM_21404333ND
2014-02-11S2THM_21404332ND
2014-02-11S2THM_21404331ND
2014-05-13S2THM_21413410ND
2014-05-13S2THM_21413409ND
2014-05-13S2THM_21413408ND
2014-05-13S2THM_21413407ND
2014-08-14S2THM_21422706ND
2014-08-14S2THM_21422705ND
2014-08-14S2THM_21422707ND
2014-08-14S2THM_21422708ND
2014-11-13S2THM_21431835ND
2014-11-13S2THM_21431834ND
2014-11-13S2THM_21431833ND
2014-11-13S2THM_21431832ND
2015-02-11S2THM_21504316ND
2015-02-11S2THM_21504315ND
2015-02-11S2THM_21504314ND
2015-02-11S2THM_21504313ND
2015-05-12S2THM_21513332ND
2015-05-12S2THM_21513333ND
2015-05-12S2THM_21513335ND
2015-05-12S2THM_21513334ND
2015-08-12S2DBP_235440-201ND
2015-08-12S2DBP_235439-201ND
2015-08-12S2DBP_235438-201ND
2015-08-12S2DBP_235437-201ND
2015-11-10240067-2015-DWND
2015-11-10240066-2015-DWND
2015-11-10240065-2015-DWND
2015-11-10240064-2015-DWND
2016-02-09243992-2016-DWND
2016-02-09243991-2016-DWND
2016-02-09243993-2016-DWND
2016-02-09243994-2016-DWND
2016-05-2416052798-04AND
2016-05-2416052798-03AND
2016-05-2416052798-02AND
2016-05-2416052798-01AND
2016-08-0816081300-04AND
2016-08-0816081300-03AND
2016-08-0816081300-02AND
2016-08-0816081300-01AND
2016-11-0816111182-01AND
2016-11-0816111182-04AND
2016-11-0816111182-03AND
2016-11-0816111182-02AND
2017-02-1517022194-04AND
2017-02-1517022194-03AND
2017-02-1517022194-02AND
2017-02-1517022194-01AND
2017-05-0817051238-04AND
2017-05-0817051238-03AND
2017-05-0817051238-02AND
2017-05-0817051238-01AND
2017-08-0717081305-02AND
2017-08-0717081305-01AND
2017-08-0717081305-03AND
2017-08-0717081305-04AND
2017-11-0617111125-04AND
2017-11-0617111125-03AND
2017-11-0617111125-02AND
2017-11-0617111125-01AND
2018-02-1318021960-04AND
2018-02-1318021960-03AND
2018-02-1318021960-02AND
2018-02-1318021960-01AND
2018-05-0718051270-01AND
2018-05-0718051270-02AND
2018-05-0718051270-04AND
2018-05-0718051270-03AND
2018-08-0618081432-04AND
2018-08-0618081432-03AND
2018-08-0618081432-02AND
2018-08-0618081432-01AND
2018-11-1918112739-04AND
2018-11-1918112739-03AND
2018-11-1918112739-02AND
2018-11-1918112739-01AND
2019-02-1119021406-02AND
2019-02-1119021406-01AND
2019-02-1119021406-03AND
2019-02-1119021406-04AND
2019-05-1319051896-04AND
2019-05-1319051896-03AND
2019-05-1319051896-02AND
2019-05-1319051896-01AND
2019-08-1235490706004ND
2019-08-1235490706003ND
2019-08-1235490706002ND
2019-08-1235490706001ND
2019-11-197392560010.570 ppb
2019-11-19739256004ND
2019-11-19739256003ND
2019-11-197392560020.630 ppb