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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Pennsylvania American Royersford

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.

 

111

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.958 ppb3124ND - 6.60 ppb
20130.775 ppb167ND - 5.40 ppb
20140.719 ppb167ND - 3.10 ppb
20150.394 ppb165ND - 2.10 ppb
20161.20 ppb1612ND - 4.30 ppb
20170.550 ppb168ND - 2.10 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
2012-01-0915638101ND
2012-01-0915637101ND
2012-01-0915637401ND
2012-01-09156382010.500 ppb
2012-01-0915637601ND
2012-01-09156375010.600 ppb
2012-01-09156372010.600 ppb
2012-01-09156377011.30 ppb
2012-01-09156373011.10 ppb
2012-04-02173921010.500 ppb
2012-04-0217390101ND
2012-04-02173907011.000 ppb
2012-04-02173923011.10 ppb
2012-04-0217391101ND
2012-04-02173909010.700 ppb
2012-04-02173903010.600 ppb
2012-04-02173913010.700 ppb
2012-04-02173905010.700 ppb
2012-07-10173922011.40 ppb
2012-07-10173902010.600 ppb
2012-07-10173908013.40 ppb
2012-07-10173924016.60 ppb
2012-07-10173912010.500 ppb
2012-07-10173910010.900 ppb
2012-07-10173904010.700 ppb
2012-07-10173914011.50 ppb
2012-07-10173906011.60 ppb
2012-10-10200057011.50 ppb
2012-10-1020005301ND
2012-10-10200054010.600 ppb
2012-10-10200055011.000 ppb
2013-01-0920724401ND
2013-01-0920723701ND
2013-01-09207238010.500 ppb
2013-01-0920724001ND
2013-04-1021591901ND
2013-04-1021590901ND
2013-04-1021591001ND
2013-04-1021591201ND
2013-07-10228200010.500 ppb
2013-07-1022819101ND
2013-07-10228192010.500 ppb
2013-07-1022819401ND
2013-10-08235244012.50 ppb
2013-10-08235235010.900 ppb
2013-10-08235236012.10 ppb
2013-10-08235238015.40 ppb
2014-01-0824411701ND
2014-01-0824411001ND
2014-01-0824411101ND
2014-01-0824411301ND
2014-04-0725341401ND
2014-04-0725339501ND
2014-04-0725339601ND
2014-04-0725340601ND
2014-07-08261158010.600 ppb
2014-07-0826114901ND
2014-07-08261150010.600 ppb
2014-07-08261152010.900 ppb
2014-10-07271047013.10 ppb
2014-10-07271036011.40 ppb
2014-10-07271037012.30 ppb
2014-10-07271041012.60 ppb
2015-01-0712283009ND
2015-01-0712282989ND
2015-01-0712282995ND
2015-01-0712283001ND
2015-04-0812628850ND
2015-04-0812628830ND
2015-04-08126288361.000 ppb
2015-04-0812628842ND
2015-07-0713008731ND
2015-07-0713008711ND
2015-07-0713008717ND
2015-07-07130087230.500 ppb
2015-10-07133852972.10 ppb
2015-10-0713385277ND
2015-10-07133852831.10 ppb
2015-10-07133852891.60 ppb
2016-01-0613749040ND
2016-01-0613749020ND
2016-01-06137490260.700 ppb
2016-01-0613749032ND
2016-04-07140978120.600 ppb
2016-04-0714097792ND
2016-04-07140977981.000 ppb
2016-04-07140978040.600 ppb
2016-07-12145643731.50 ppb
2016-07-12145643674.30 ppb
2016-07-12145643791.40 ppb
2016-07-12145643612.10 ppb
2016-10-10150709631.50 ppb
2016-10-10150709451.000 ppb
2016-10-10150709512.90 ppb
2016-10-10150709571.60 ppb
2017-01-0915512510ND
2017-01-0915512489ND
2017-01-09155124950.700 ppb
2017-01-0915512501ND
2017-04-1015931419ND
2017-04-1015931398ND
2017-04-1015931404ND
2017-04-1015931410ND
2017-07-10164082180.600 ppb
2017-07-1016408197ND
2017-07-10164082031.000 ppb
2017-07-10164082090.500 ppb
2017-10-10168756171.50 ppb
2017-10-10168755960.600 ppb
2017-10-10168756022.10 ppb
2017-10-10168756081.80 ppb