Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Hingham/Hull - Aquarion Water Company

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

 

198

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.0848 ppb424ND - 1.10 ppb
20160.164 ppb4210ND - 1.000 ppb
2017ND220ND
20180.107 ppb428ND - 0.650 ppb
2019ND420ND

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 Result
2014-05-13ND
2014-05-13ND
2014-08-05ND
2014-08-05ND
2014-08-12ND
2014-08-12ND
2014-11-12ND
2014-11-12ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-08-06ND
2015-08-06ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-100.680 ppb
2015-08-100.680 ppb
2015-08-101.10 ppb
2015-08-101.10 ppb
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-05-13ND
2016-07-14ND
2016-07-14ND
2016-08-090.770 ppb
2016-08-090.770 ppb
2016-08-090.500 ppb
2016-08-090.500 ppb
2016-08-090.550 ppb
2016-08-090.550 ppb
2016-08-09ND
2016-08-09ND
2016-08-091.000 ppb
2016-08-091.000 ppb
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-16ND
2016-11-160.620 ppb
2016-11-160.620 ppb
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-07-10ND
2017-07-10ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-02-14ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-05-07ND
2018-08-02ND
2018-08-02ND
2018-08-090.650 ppb
2018-08-090.650 ppb
2018-08-090.510 ppb
2018-08-090.510 ppb
2018-08-090.550 ppb
2018-08-090.550 ppb
2018-08-09ND
2018-08-09ND
2018-08-090.530 ppb
2018-08-090.530 ppb
2018-08-14ND
2018-08-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-07-18ND
2019-07-18ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND