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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Hamlet Water System

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

 

68

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.200 ppb81ND - 1.60 ppb
2016ND80ND
2017ND120ND
2018ND160ND
2019ND160ND

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
2014-01-0792185720002DISND
2014-01-0792185720001DISND
2014-04-0892196681002DISND
2014-04-0892196681001DISND
2014-07-08C409385-02ND
2014-07-08C409385-01ND
2014-10-07C413677-01ND
2014-10-07C413677-02ND
2015-01-13ND
2015-01-13ND
2015-04-07ND
2015-04-07ND
2015-07-07ND
2015-07-07ND
2015-10-131.60 ppb
2015-10-13ND
2016-01-12160063-02ND
2016-01-12160063-01ND
2016-04-12160524-02ND
2016-04-12160524-01ND
2016-07-123494090ND
2016-07-123494092ND
2016-10-11161606-01ND
2016-10-11161606-02ND
2017-01-10170049-01ND
2017-01-10170049-02ND
2017-04-11170616-02ND
2017-04-11170616-01ND
2017-07-11171152-03ND
2017-07-11171152-01ND
2017-07-11171152-02ND
2017-07-11171152-04ND
2017-10-12171721-03ND
2017-10-12171721-02ND
2017-10-12171721-01ND
2017-10-12171721-04ND
2018-01-09180057-04 ND
2018-01-09180057-03 ND
2018-01-09180057-02 ND
2018-01-09180057-01 ND
2018-04-10180611-04 ND
2018-04-10180611-01 ND
2018-04-10180611-02 ND
2018-04-10180611-03 ND
2018-07-10181182-04 ND
2018-07-10181182-03 ND
2018-07-10181182-02 ND
2018-07-10181182-01 ND
2018-10-09CB15843-01RE1 ND
2018-10-09CB15843-02RE1 ND
2018-10-09CB15843-03RE1 ND
2018-10-09CB15843-04RE1 ND
2019-01-08190052-01 ND
2019-01-08190052-02 ND
2019-01-08190052-03 ND
2019-01-08190052-04 ND
2019-04-09190685-01 ND
2019-04-09190685-04 ND
2019-04-09190685-03 ND
2019-04-09190685-02 ND
2019-07-09191273-02 ND
2019-07-09191273-04 ND
2019-07-09191273-03 ND
2019-07-09191273-01 ND
2019-10-08191970-04 ND
2019-10-08191970-03 ND
2019-10-08191970-02 ND
2019-10-08191970-01 ND