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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Leominster Water Division (MWRA)

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

 

228

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND480ND
2016ND400ND
2017ND400ND
2018ND520ND
2019ND400ND

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
2014-04-08ND
2014-04-08ND
2014-04-08ND
2014-04-08ND
2014-04-08ND
2014-04-08ND
2014-04-08ND
2014-04-08ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-03-31ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-07ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-04-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-07-28ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-04-27ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-04-26ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-04-11ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-08-30ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-01-23ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-10-09ND
2019-10-09ND
2019-10-09ND
2019-10-09ND
2019-10-09ND
2019-10-09ND
2019-10-09ND
2019-10-09ND