Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

St Albans Water

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.313 ppb162ND - 3.00 ppb
20150.825 ppb168ND - 2.00 ppb
20160.611 ppb197ND - 2.70 ppb
2017ND190ND
20180.353 ppb193ND - 2.67 ppb
20190.868 ppb195ND - 4.19 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
2014-02-06S2THM_21403808ND
2014-02-06S2THM_21403809ND
2014-02-06S2THM_21403810ND
2014-02-06S2THM_21403811ND
2014-05-08S2THM_21412908ND
2014-05-08S2THM_21412909ND
2014-05-08S2THM_21412910ND
2014-05-08S2THM_21412911ND
2014-08-27S2THM_214240083.00 ppb
2014-08-27S2THM_214240092.01 ppb
2014-08-27S2THM_21424010ND
2014-08-27S2THM_21424011ND
2014-11-13S2THM_21431817ND
2014-11-13S2THM_21431818ND
2014-11-13S2THM_21431819ND
2014-11-13S2THM_21431820ND
2015-02-12S2THM_21504465ND
2015-02-12S2THM_21504466ND
2015-02-12S2THM_21504467ND
2015-02-12S2THM_21504468ND
2015-05-12S2THM_21513308ND
2015-05-12S2THM_21513309ND
2015-05-12S2THM_21513310ND
2015-05-12S2THM_21513311ND
2015-08-13S2THM_215225502.00 ppb
2015-08-13S2THM_215225511.80 ppb
2015-08-13S2THM_215225521.80 ppb
2015-08-13S2THM_215225531.50 ppb
2015-11-16215321081.000 ppb
2015-11-16215321092.00 ppb
2015-11-16215321101.80 ppb
2015-11-16215321111.30 ppb
2016-02-1621604815ND
2016-02-1621604816ND
2016-02-1621604817ND
2016-02-1621604818ND
2016-02-1621604819ND
2016-05-1921614108ND
2016-05-1921614109ND
2016-05-1921614110ND
2016-05-1921614111ND
2016-08-17216231-511.60 ppb
2016-08-17216231-521.20 ppb
2016-08-17216231-531.30 ppb
2016-08-17216231-542.00 ppb
2016-08-17216231-65ND
2016-11-09216315-081.50 ppb
2016-11-09216315-092.70 ppb
2016-11-09216315-10ND
2016-11-09216315-111.30 ppb
2016-11-09216315-12ND
2017-02-08217040-18ND
2017-02-08217040-19ND
2017-02-08217040-20ND
2017-02-08217040-21ND
2017-02-08217040-22ND
2017-05-15217136-08ND
2017-05-15217136-09ND
2017-05-15217136-10ND
2017-05-15217136-11ND
2017-05-15217136-12ND
2017-08-16217229-08ND
2017-08-16217229-09ND
2017-08-16217229-10ND
2017-08-16217229-11ND
2017-08-16217229-12ND
2017-11-15217320-55ND
2017-11-15217320-56ND
2017-11-15217320-57ND
2017-11-15217320-58ND
2018-02-14218046-08ND
2018-02-14218046-09ND
2018-02-14218046-10ND
2018-02-14218046-11ND
2018-02-14218046-12ND
2018-05-24218145-08ND
2018-05-24218145-09ND
2018-05-24218145-10ND
2018-05-24218145-11ND
2018-05-24218145-12ND
2018-08-22218235-08ND
2018-08-22218235-092.60 ppb
2018-08-22218235-102.67 ppb
2018-08-22218235-111.44 ppb
2018-08-22218235-12ND
2018-11-14218319-08ND
2018-11-14218319-09ND
2018-11-14218319-10ND
2018-11-14218319-11ND
2019-02-19219051-08ND
2019-02-19219051-09ND
2019-02-19219051-10ND
2019-02-19219051-11ND
2019-05-13219134-07ND
2019-05-13219134-08ND
2019-05-13219134-09ND
2019-05-13219134-10ND
2019-05-13219134-12ND
2019-08-07219220-243.56 ppb
2019-08-07219220-252.87 ppb
2019-08-07219220-263.60 ppb
2019-08-07219220-274.19 ppb
2019-08-07219220-282.27 ppb
2019-11-12219317-08ND
2019-11-12219317-09ND
2019-11-12219317-10ND
2019-11-12219317-11ND
2019-11-12219317-12ND