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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

North Penn 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

 

248

Samples

0

Samples exceeding legal limit (MCL)

73

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.356 ppb4215ND - 2.06 ppb
20150.222 ppb4713ND - 1.14 ppb
20160.309 ppb4716ND - 2.00 ppb
20170.231 ppb4212ND - 1.52 ppb
20180.247 ppb3812ND - 1.34 ppb
20190.161 ppb327ND - 0.982 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
2014-01-0820140097ND
2014-01-0820140098ND
2014-01-0820140104ND
2014-01-0820140102ND
2014-01-08201401011.05 ppb
2014-01-0820140103ND
2014-01-08201400990.534 ppb
2014-01-08201401000.961 ppb
2014-03-05201408160.776 ppb
2014-03-05201408171.98 ppb
2014-03-05201408180.964 ppb
2014-03-0520140819ND
2014-03-0520140820ND
2014-04-0920141219ND
2014-04-0920141220ND
2014-04-0920141226ND
2014-04-0920141224ND
2014-04-09201412230.668 ppb
2014-04-0920141225ND
2014-04-0920141221ND
2014-04-0920141222ND
2014-06-04201419321.02 ppb
2014-06-04201419332.06 ppb
2014-06-04201419350.609 ppb
2014-06-04201419360.605 ppb
2014-06-04201419340.538 ppb
2014-07-0914071329-06ND
2014-07-0914071329-01ND
2014-07-0914071329-04ND
2014-07-0914071329-03ND
2014-07-0914071329-071.10 ppb
2014-07-0914071329-08ND
2014-07-0914071329-05ND
2014-07-0914071329-02ND
2014-10-0814101000-06ND
2014-10-0814101000-01ND
2014-10-0814101000-04ND
2014-10-0814101000-03ND
2014-10-0814101000-07ND
2014-10-0814101000-08ND
2014-10-0814101000-051.000 ppb
2014-10-0814101000-021.10 ppb
2015-01-0712287119ND
2015-01-0712287099ND
2015-01-0712287109ND
2015-01-0712287104ND
2015-01-07122871240.607 ppb
2015-01-0712287129ND
2015-01-0712287114ND
2015-01-07122871340.613 ppb
2015-04-0812633557ND
2015-04-0812633537ND
2015-04-0812633547ND
2015-04-0812633542ND
2015-04-08126335620.800 ppb
2015-04-0812633567ND
2015-04-08126335520.800 ppb
2015-04-0812633572ND
2015-07-0813013213ND
2015-07-0813013193ND
2015-07-0813013203ND
2015-07-0813013198ND
2015-07-0813013218ND
2015-07-0813013223ND
2015-07-0813013208ND
2015-07-0813013228ND
2015-07-13130130830.818 ppb
2015-07-13130131090.956 ppb
2015-07-1313013135ND
2015-07-1313013161ND
2015-07-1313013187ND
2015-09-14132647260.779 ppb
2015-09-14132647521.09 ppb
2015-09-1413264778ND
2015-10-0713389313ND
2015-10-0713389293ND
2015-10-0713389303ND
2015-10-0713389298ND
2015-10-07133893180.583 ppb
2015-10-0713389323ND
2015-10-07133893080.733 ppb
2015-10-07133893280.632 ppb
2015-12-02136333620.876 ppb
2015-12-02136333881.14 ppb
2015-12-0213633414ND
2015-12-0213633440ND
2015-12-0213633466ND
2015-12-0213633492ND
2015-12-0913633518ND
2016-01-0613752750ND
2016-01-0613752730ND
2016-01-0613752740ND
2016-01-0613752735ND
2016-01-0613752755ND
2016-01-0613752760ND
2016-01-0613752745ND
2016-01-0613752765ND
2016-03-0213986069ND
2016-03-02139860951.81 ppb
2016-03-0213986121ND
2016-03-0213986147ND
2016-03-0213986173ND
2016-04-0714102781ND
2016-04-0714102757ND
2016-04-0714102769ND
2016-04-0714102763ND
2016-04-07141027870.922 ppb
2016-04-0714102793ND
2016-04-07141027750.633 ppb
2016-04-0714102799ND
2016-06-06144059060.771 ppb
2016-06-06144059330.882 ppb
2016-06-0614405987ND
2016-06-0614406014ND
2016-06-0614405960ND
2016-07-0614569908ND
2016-07-0614569884ND
2016-07-0614569896ND
2016-07-0614569890ND
2016-07-06145699140.796 ppb
2016-07-0614569920ND
2016-07-06145699020.930 ppb
2016-07-0614569926ND
2016-09-07149080950.570 ppb
2016-09-07149081220.612 ppb
2016-09-0714908149ND
2016-09-0714908176ND
2016-09-0714908203ND
2016-10-10150757000.700 ppb
2016-10-10150756760.600 ppb
2016-10-10150756880.600 ppb
2016-10-10150756820.600 ppb
2016-10-10150757061.30 ppb
2016-10-1015075712ND
2016-10-10150756942.00 ppb
2016-10-10150757180.800 ppb
2017-01-1015517159ND
2017-01-1015517135ND
2017-01-10155171470.759 ppb
2017-01-1015517141ND
2017-01-10155171651.10 ppb
2017-01-1015517171ND
2017-01-10155171530.501 ppb
2017-01-1015517177ND
2017-03-2215796100ND
2017-03-22157961270.736 ppb
2017-03-2215796154ND
2017-03-2215796181ND
2017-03-2215796208ND
2017-04-1015936901ND
2017-04-1015936881ND
2017-04-1015936891ND
2017-04-1015936886ND
2017-04-10159369060.600 ppb
2017-04-1015936911ND
2017-04-1015936896ND
2017-04-1015936916ND
2017-07-1016413087ND
2017-07-1016413067ND
2017-07-1016413077ND
2017-07-1016413072ND
2017-07-10164130920.600 ppb
2017-07-1016413097ND
2017-07-10164130820.500 ppb
2017-07-1016413102ND
2017-09-11167267650.869 ppb
2017-09-11167267921.05 ppb
2017-09-1116726819ND
2017-09-1116726846ND
2017-09-1116726873ND
2017-10-1016880051ND
2017-10-1016880027ND
2017-10-1016880039ND
2017-10-1016880033ND
2017-10-10168800570.707 ppb
2017-10-1016880063ND
2017-10-10168800450.750 ppb
2017-10-10168800691.52 ppb
2018-01-1020180164ND
2018-01-1020180160ND
2018-01-1020180162ND
2018-01-1020180161ND
2018-01-1020180165ND
2018-01-1020180166ND
2018-01-1020180163ND
2018-01-10201801490.500 ppb
2018-03-20201810730.655 ppb
2018-03-20201810741.04 ppb
2018-03-2020181075ND
2018-03-2020181076ND
2018-04-09201813720.541 ppb
2018-04-0920181368ND
2018-04-09201813700.571 ppb
2018-04-0920181369ND
2018-04-0920181373ND
2018-04-0920181374ND
2018-04-09201813710.756 ppb
2018-04-09201813460.692 ppb
2018-07-0920182557ND
2018-07-0920182553ND
2018-07-09201825550.644 ppb
2018-07-0920182554ND
2018-07-09201825580.935 ppb
2018-07-0920182559ND
2018-07-09201825560.819 ppb
2018-07-09201825830.896 ppb
2018-08-068082602-01ND
2018-08-0620182958ND
2018-10-0920183861ND
2018-10-0920183857ND
2018-10-0920183859ND
2018-10-0920183858ND
2018-10-0920183862ND
2018-10-0920183863ND
2018-10-0920183860ND
2018-10-09201838731.34 ppb
2019-01-0720190039ND
2019-01-0720190035ND
2019-01-0720190037ND
2019-01-0720190036ND
2019-01-0720190040ND
2019-01-0720190041ND
2019-01-0720190038ND
2019-01-07201900560.543 ppb
2019-04-0820191333ND
2019-04-0820191337ND
2019-04-0820191334ND
2019-04-0820191335ND
2019-04-0820191331ND
2019-04-0820191330ND
2019-04-0820191332ND
2019-04-0820191336ND
2019-07-0920192613ND
2019-07-0920192617ND
2019-07-0920192614ND
2019-07-0920192615ND
2019-07-09201926110.809 ppb
2019-07-0920192610ND
2019-07-09201926120.813 ppb
2019-07-09201926160.702 ppb
2019-10-0720193926ND
2019-10-0720193930ND
2019-10-0720193927ND
2019-10-0720193928ND
2019-10-07201939240.620 ppb
2019-10-0720193923ND
2019-10-07201939250.677 ppb
2019-10-07201939290.982 ppb