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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

South Hero Fire District 4

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND50ND
2014ND50ND
2015ND50ND
2016ND50ND
2017ND50ND

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
2012-03-0712V170ND
2012-03-1312V174ND
2012-05-1412V207ND
2012-09-1713V00078ND
2012-12-1113V00127ND
2013-03-0613V00161ND
2013-03-0613V00160ND
2013-05-1413V00199ND
2013-08-1814V00033ND
2013-11-0714V00086ND
2014-02-0414V00116ND
2014-02-1114V00131ND
2014-05-2214V00193ND
2014-08-1915V00081ND
2014-11-0515V00132ND
2015-02-0415V00164ND
2015-03-2515V00185ND
2015-05-2615V00206ND
2015-08-0616V00028ND
2015-11-111511-24726-001ND
2016-02-0416V00093ND
2016-03-2316V00109ND
2016-05-311606-10997-001ND
2016-08-2517V00030ND
2016-11-0917V00061ND
2017-02-231702-04002-001ND
2017-03-2617V00120ND
2017-05-3017V00145ND
2017-08-2718V00072ND
2017-11-1518V00107ND