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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Erie County Perkins 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.

MORE ABOUT THIS CONTAMINANT

 

92

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.338 ppb168ND - 0.800 ppb
2015ND160ND
20160.203 ppb155ND - 0.700 ppb
20170.346 ppb169ND - 0.710 ppb
20180.194 ppb165ND - 0.800 ppb
20190.131 ppb133ND - 0.600 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
2014-02-1114-11834-01ND
2014-02-1114-11834-09ND
2014-02-1114-11834-10ND
2014-02-1214-11834-13ND
2014-05-1214-16008-06ND
2014-05-1214-16008-05ND
2014-05-1214-16008-07ND
2014-05-1214-16008-08ND
2014-08-1114-21264-120.800 ppb
2014-08-1114-21264-110.800 ppb
2014-08-1114-21264-090.800 ppb
2014-08-1114-21264-100.800 ppb
2014-11-1014-25639-090.600 ppb
2014-11-1214-25639-010.500 ppb
2014-11-1214-25639-120.500 ppb
2014-11-1214-25639-130.600 ppb
2015-02-09A150231884ND
2015-02-09A150231886ND
2015-02-09A150231889ND
2015-02-12A150232089ND
2015-05-11A150285601ND
2015-05-11A150285600ND
2015-05-11A150285603ND
2015-05-11A150285602ND
2015-08-13A150231668ND
2015-08-13A150231669ND
2015-08-13A150231666ND
2015-08-13A150231667ND
2015-11-09A150320062ND
2015-11-09A150331717ND
2015-11-09A150320061ND
2015-11-10A150331718ND
2016-02-12A160338083ND
2016-02-12A160338082ND
2016-02-12A160338081ND
2016-02-12A160362044ND
2016-05-09A160311035ND
2016-05-09A160311036ND
2016-05-09A160311037ND
2016-08-08A1603749100.700 ppb
2016-08-10A1603749150.610 ppb
2016-08-10A160432159ND
2016-08-11A1603385990.560 ppb
2016-11-10A160453257ND
2016-11-10A1604532560.660 ppb
2016-11-10A1604532510.520 ppb
2016-11-10A160453253ND
2017-02-08A170453267ND
2017-02-09A1704532740.560 ppb
2017-02-09A1704532750.510 ppb
2017-02-10A1704532790.540 ppb
2017-05-08A170490252ND
2017-05-08A170490255ND
2017-05-08A1704902560.510 ppb
2017-05-10A1704902660.680 ppb
2017-08-10A1705327320.710 ppb
2017-08-10A1705327330.710 ppb
2017-08-11A1705327350.630 ppb
2017-08-14A1705327420.690 ppb
2017-11-14A170540167ND
2017-11-14A170540170ND
2017-11-14A170540173ND
2017-11-14A170540174ND
2018-02-09A180539786ND
2018-02-09A180539785ND
2018-02-09A180539784ND
2018-02-12A180570668ND
2018-05-08A180570678ND
2018-05-08A180570682ND
2018-05-08A180570684ND
2018-05-11A180593361ND
2018-08-08A180626527ND
2018-08-08A1806265280.600 ppb
2018-08-08A1806265330.700 ppb
2018-08-09A180626541ND
2018-11-088K01205-02ND
2018-11-098K01205-040.800 ppb
2018-11-138K01771-030.500 ppb
2018-11-138K01771-040.500 ppb
2019-02-089B01003-01ND
2019-02-089B01003-02ND
2019-02-129B01561-04ND
2019-02-129B01561-05ND
2019-05-109E01593-02ND
2019-05-109E01593-03ND
2019-05-109E01593-05ND
2019-05-139E01855-02ND
2019-08-139H02065-040.600 ppb
2019-08-139H02065-050.500 ppb
2019-08-139H02129-01ND
2019-08-139H02129-020.600 ppb
2019-08-139H02129-03ND