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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Belmont Water Department/north

NOTE: Belmont Water Department/north purchases water from Laconia Water Works which is required to test for bromoform. Sample information shown below was taken by Laconia Water Works.

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

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND10ND
2019ND10ND

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

NOTE: Belmont Water Department/north purchases water from Laconia Water Works which is required to test for bromoform. Sample information shown below was taken by Laconia Water Works.

Date Lab ID Result
2014-09-18A407848002ND
2015-08-07A506476002ND
2016-01-04B600025001ND
2016-01-04B600025002ND
2016-01-04B600025003ND
2016-01-04B600025004ND
2016-04-04B601610003ND
2016-04-04B601610004ND
2016-04-04B601610002ND
2016-04-04B601610001ND
2016-07-05B605155001ND
2016-07-05B605155002ND
2016-07-05B605155003ND
2016-07-05B605155004ND
2016-08-19B607790002ND
2016-10-03B609269003ND
2016-10-03B609269004ND
2016-10-03B609269002ND
2016-10-03B609269001ND
2017-01-04B700039001ND
2017-01-04B700039002ND
2017-01-04B700039003ND
2017-01-04B700039004ND
2017-04-03B701474003ND
2017-04-03B701474004ND
2017-04-03B701474002ND
2017-04-03B701474001ND
2017-07-03B704714001ND
2017-07-03B704714002ND
2017-07-03B704714003ND
2017-07-03B704714004ND
2017-08-11B707019002ND
2017-10-02174027.04ND
2017-10-02174027.03ND
2017-10-02174027.01ND
2017-10-02174027.02ND
2018-01-02B800017001ND
2018-01-02B800017002ND
2018-01-02B800017003ND
2018-01-02B800017004ND
2018-04-02180077.03ND
2018-04-02180077.04ND
2018-04-02180077.02ND
2018-04-02180077.01ND
2018-07-02183711.01ND
2018-07-02183711.02ND
2018-07-02183711.03ND
2018-07-02183711.04ND
2018-08-17B807141002ND
2018-10-01187233.04ND
2018-10-01187233.03ND
2018-10-01187233.01ND
2018-10-01187233.02ND
2019-01-02190741.01ND
2019-01-02190741.02ND
2019-01-02190741.03ND
2019-01-02190741.04ND
2019-04-02193516.04ND
2019-04-02193516.03ND
2019-04-02193516.02ND
2019-04-02193516.01ND
2019-07-01197249.01ND
2019-07-01197249.02ND
2019-07-01197249.03ND
2019-07-01197249.04ND
2019-08-19B907498002ND
2019-10-01201006.01ND
2019-10-01201006.02ND
2019-10-01201007.01ND
2019-10-01201007.02ND