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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Carroll-Boone Water District

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.

 

75

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND210ND
2013ND180ND
2014ND90ND
2015ND90ND
2016ND90ND
2017ND90ND

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
2012-02-2112054000802ND
2012-02-2112054000702ND
2012-02-2112054000902ND
2012-02-2112054001002ND
2012-02-2112054001802ND
2012-04-1812111002002ND
2012-06-1212166000801ND
2012-06-1212166000901ND
2012-06-1212166000601ND
2012-06-1212166000701ND
2012-06-1212166001701ND
2012-08-1412229002102ND
2012-08-1412229002902ND
2012-08-1412229002002ND
2012-08-1412229001902ND
2012-08-1412229001802ND
2012-11-2012326001202ND
2012-11-2012326001002ND
2012-11-2012326002202ND
2012-11-2012326001102ND
2012-11-2012326000902ND
2013-02-1813052006002ND
2013-02-1813052005702ND
2013-02-1813052005802ND
2013-02-1813052004902ND
2013-02-1813052005902ND
2013-04-0913102000909ND
2013-05-1313136008902ND
2013-05-1313136007202ND
2013-05-1313136008602ND
2013-05-1313136008702ND
2013-05-1313136008502ND
2013-08-2113235001402ND
2013-08-2113235002302ND
2013-08-2113235002602ND
2013-08-2113235002202ND
2013-08-2113235002402ND
2013-11-1213317003802ND
2013-11-1213317003102ND
2014-02-2514059001502ND
2014-02-2514059000302ND
2014-04-0714100004401ND
2014-05-1314136003402ND
2014-05-1314136005102ND
2014-08-1814233005702ND
2014-08-1814233006902ND
2014-11-1214316007802ND
2014-11-1214316006702ND
2015-02-1115043001802ND
2015-02-1115043000702ND
2015-05-1215135002502ND
2015-05-1215135002601ND
2015-05-1215135002002ND
2015-07-2215205000302ND
2015-07-2215205002002ND
2015-11-2415329003502ND
2015-11-2415329004002ND
2016-02-0916042006402ND
2016-02-0916042007102ND
2016-04-1916112009104ND
2016-05-1916140014302ND
2016-05-1916140014202ND
2016-07-1816203007302ND
2016-07-1816203006602ND
2016-10-1816294010402ND
2016-10-1816294009202ND
2017-01-1717019010502ND
2017-01-1717019011602ND
2017-04-2717118000901ND
2017-05-1017131000302ND
2017-05-1017131000402ND
2017-08-0817222012802ND
2017-08-0817222013602ND
2017-11-1417320008702ND
2017-11-1417320007702ND