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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Pottstown Borough Water Authority

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

 

109

Samples

0

Samples exceeding legal limit (MCL)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.611 ppb199ND - 2.00 ppb
20150.150 ppb164ND - 0.700 ppb
20160.718 ppb179ND - 1.80 ppb
20170.252 ppb238ND - 0.900 ppb
20180.272 ppb185ND - 1.40 ppb
20190.163 ppb164ND - 0.700 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
2014-01-15140003088ND
2014-01-15140003090ND
2014-01-15140003092ND
2014-01-15140003096ND
2014-01-15140003094ND
2014-04-15140015316ND
2014-04-15140015341ND
2014-04-15140015343ND
2014-04-15140015347ND
2014-04-15140015345ND
2014-07-151400307530.900 ppb
2014-07-151400307540.700 ppb
2014-07-151400307560.800 ppb
2014-07-151400307550.800 ppb
2014-08-201400370880.900 ppb
2014-10-161400470151.90 ppb
2014-10-161400470162.00 ppb
2014-10-161400470181.80 ppb
2014-10-161400470171.80 ppb
2015-01-2012287892ND
2015-01-2012287893ND
2015-01-2012287895ND
2015-01-2012287894ND
2015-04-2112750422ND
2015-04-2112750423ND
2015-04-2112750425ND
2015-04-2112750424ND
2015-07-2113514833ND
2015-07-2113136398ND
2015-07-2113136400ND
2015-07-2113136399ND
2015-10-20136342150.700 ppb
2015-10-20136342160.600 ppb
2015-10-20136342180.500 ppb
2015-10-20136342170.600 ppb
2016-01-2013753587ND
2016-01-2013753588ND
2016-01-2013753590ND
2016-01-2013753589ND
2016-04-1914251663ND
2016-04-1914103652ND
2016-04-1914103650ND
2016-04-1914103651ND
2016-07-19145708851.60 ppb
2016-07-19145708861.30 ppb
2016-07-19145708871.40 ppb
2016-07-19145708881.30 ppb
2016-08-30149089021.80 ppb
2016-10-19150765351.10 ppb
2016-10-19150765361.50 ppb
2016-10-19150765371.20 ppb
2016-10-20150765381.000 ppb
2017-01-19156563700.500 ppb
2017-01-19155182590.500 ppb
2017-01-1915656367ND
2017-01-1915518256ND
2017-01-1915656368ND
2017-01-1915518257ND
2017-01-1915656369ND
2017-01-1915518258ND
2017-04-1815938325ND
2017-04-1815938326ND
2017-04-1815938327ND
2017-04-1815938328ND
2017-07-1816414607ND
2017-07-1816414608ND
2017-07-1816414609ND
2017-07-1816414610ND
2017-10-19168810790.800 ppb
2017-10-19168810800.800 ppb
2017-10-19168810770.700 ppb
2017-10-19168810780.700 ppb
2017-11-01170242790.900 ppb
2017-11-01168811710.900 ppb
2017-11-1517024367ND
2018-01-168001102-01ND
2018-01-168001102-02ND
2018-01-168001102-03ND
2018-01-168001102-04ND
2018-04-188010311-01ND
2018-04-188010312-01ND
2018-04-188010312-020.600 ppb
2018-04-188010312-03ND
2018-04-188010312-04ND
2018-07-188020158-011.10 ppb
2018-07-188020158-021.40 ppb
2018-07-188020158-031.000 ppb
2018-07-188020158-040.800 ppb
2018-09-178027815-01ND
2018-10-168029709-01ND
2018-10-168029709-02ND
2018-10-168029709-03ND
2018-10-168029709-04ND
2019-01-159002101-01ND
2019-01-159002101-04ND
2019-01-159002101-02ND
2019-01-159002101-03ND
2019-04-179011569-01ND
2019-04-179011569-02ND
2019-04-179011569-03ND
2019-04-179011569-04ND
2019-07-159024038-01ND
2019-07-159024038-02ND
2019-07-159024038-03ND
2019-07-159024038-04ND
2019-10-159035859-010.700 ppb
2019-10-159035859-020.500 ppb
2019-10-159035859-030.700 ppb
2019-10-159035859-040.700 ppb