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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Pennsylvania American Water Pittsburgh

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.

 

284

Samples

0

Samples exceeding legal limit (MCL)

101

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.650 ppb4415ND - 3.00 ppb
20130.821 ppb4819ND - 3.50 ppb
20140.756 ppb4825ND - 2.30 ppb
20151.49 ppb4828ND - 6.30 ppb
20160.427 ppb4812ND - 2.80 ppb
20170.0667 ppb484ND - 1.30 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
2012-02-1432801ND
2012-02-1432798ND
2012-02-1432804ND
2012-02-1432800ND
2012-02-1432802ND
2012-02-1432799ND
2012-02-1432803ND
2012-02-1432797ND
2012-05-1533001ND
2012-05-1533002ND
2012-05-1533003ND
2012-05-1533004ND
2012-05-1533005ND
2012-05-1533006ND
2012-05-1533007ND
2012-05-1533008ND
2012-05-1533009ND
2012-05-1533010ND
2012-05-1533011ND
2012-05-15330121.000 ppb
2012-08-14332002.00 ppb
2012-08-14332013.00 ppb
2012-08-14332022.00 ppb
2012-08-14332031.000 ppb
2012-08-14332042.00 ppb
2012-08-14332053.00 ppb
2012-08-14332062.00 ppb
2012-08-14332071.000 ppb
2012-08-14332083.00 ppb
2012-08-14332092.00 ppb
2012-08-14332102.00 ppb
2012-08-14332112.00 ppb
2012-11-1333412ND
2012-11-13334131.20 ppb
2012-11-1333414ND
2012-11-1333415ND
2012-11-1333416ND
2012-11-1333417ND
2012-11-1333418ND
2012-11-1333419ND
2012-11-13334201.40 ppb
2012-11-1333421ND
2012-11-1333422ND
2012-11-1333423ND
2013-02-1233616ND
2013-02-1233617ND
2013-02-1233618ND
2013-02-1233619ND
2013-02-1233620ND
2013-02-1233621ND
2013-02-1233622ND
2013-02-1233623ND
2013-02-1233624ND
2013-02-1233625ND
2013-02-1233626ND
2013-02-1233627ND
2013-05-1433818ND
2013-05-1433819ND
2013-05-1433820ND
2013-05-1433821ND
2013-05-1433822ND
2013-05-1433823ND
2013-05-1433824ND
2013-05-1433825ND
2013-05-1433826ND
2013-05-1433827ND
2013-05-1433828ND
2013-05-1433829ND
2013-08-15340241.10 ppb
2013-08-1534025ND
2013-08-1534026ND
2013-08-15340271.000 ppb
2013-08-15340281.10 ppb
2013-08-15340291.20 ppb
2013-08-1534030ND
2013-08-1534031ND
2013-08-15340321.10 ppb
2013-08-1534033ND
2013-08-15340341.000 ppb
2013-08-15340351.20 ppb
2013-11-12342202.70 ppb
2013-11-12342212.80 ppb
2013-11-12342222.30 ppb
2013-11-12342233.10 ppb
2013-11-12342242.20 ppb
2013-11-12342253.10 ppb
2013-11-12342261.90 ppb
2013-11-12342272.50 ppb
2013-11-12342283.50 ppb
2013-11-12342292.80 ppb
2013-11-12342302.10 ppb
2013-11-12342312.70 ppb
2014-02-1134312ND
2014-02-1134313ND
2014-02-1134314ND
2014-02-1134315ND
2014-02-1134317ND
2014-02-1134318ND
2014-02-1134319ND
2014-02-1134320ND
2014-02-1134321ND
2014-02-1134322ND
2014-02-1134323ND
2014-02-1134316ND
2014-05-12256912011.30 ppb
2014-05-12256911011.10 ppb
2014-05-12256909011.000 ppb
2014-05-12256905011.40 ppb
2014-05-12256901011.10 ppb
2014-05-12256903011.20 ppb
2014-05-12256908011.000 ppb
2014-05-12256902011.10 ppb
2014-05-12256906011.000 ppb
2014-05-12256910011.10 ppb
2014-05-12256907011.10 ppb
2014-05-12256904011.40 ppb
2014-08-12265279012.10 ppb
2014-08-12265278012.20 ppb
2014-08-12265276011.70 ppb
2014-08-12265268012.30 ppb
2014-08-12265260012.20 ppb
2014-08-12265266012.00 ppb
2014-08-12265275011.20 ppb
2014-08-12265265011.50 ppb
2014-08-12265273011.30 ppb
2014-08-12265277011.70 ppb
2014-08-12265274011.90 ppb
2014-08-12265267011.90 ppb
2014-11-1127371901ND
2014-11-1127371801ND
2014-11-1127371601ND
2014-11-11273709010.500 ppb
2014-11-1127370101ND
2014-11-1127370701ND
2014-11-1127371501ND
2014-11-1127370601ND
2014-11-1127371301ND
2014-11-1127371701ND
2014-11-1127371401ND
2014-11-1127370801ND
2015-02-1012458294ND
2015-02-1012458288ND
2015-02-1012458276ND
2015-02-1012458251ND
2015-02-1012458226ND
2015-02-1012458239ND
2015-02-1012458270ND
2015-02-1012458233ND
2015-02-1012458258ND
2015-02-1012458282ND
2015-02-1012458264ND
2015-02-1012458245ND
2015-05-12128159160.900 ppb
2015-05-1212815910ND
2015-05-1212815898ND
2015-05-12128158730.800 ppb
2015-05-1212815848ND
2015-05-12128158610.800 ppb
2015-05-1212815892ND
2015-05-1212815855ND
2015-05-1212815880ND
2015-05-1212815904ND
2015-05-1212815886ND
2015-05-12128158671.000 ppb
2015-08-11131981701.70 ppb
2015-08-11131981641.000 ppb
2015-08-11131981521.20 ppb
2015-08-11131981271.40 ppb
2015-08-11131981020.800 ppb
2015-08-11131981151.50 ppb
2015-08-11131981461.10 ppb
2015-08-11131981090.800 ppb
2015-08-11131981340.900 ppb
2015-08-11131981580.900 ppb
2015-08-11131981401.20 ppb
2015-08-11131981211.40 ppb
2015-11-09135735234.70 ppb
2015-11-09135735175.40 ppb
2015-11-09135735054.40 ppb
2015-11-09135734804.20 ppb
2015-11-09135734555.10 ppb
2015-11-09135734682.40 ppb
2015-11-09135734996.30 ppb
2015-11-09135734624.10 ppb
2015-11-09135734875.30 ppb
2015-11-09135735114.00 ppb
2015-11-09135734935.20 ppb
2015-11-09135734742.90 ppb
2016-02-1013927685ND
2016-02-1013927679ND
2016-02-1013927667ND
2016-02-1013927642ND
2016-02-1013927617ND
2016-02-1013927630ND
2016-02-1013927661ND
2016-02-1013927624ND
2016-02-1013927649ND
2016-02-1013927673ND
2016-02-1013927655ND
2016-02-1013927636ND
2016-05-1714329247ND
2016-05-1714329241ND
2016-05-1714329229ND
2016-05-1714329204ND
2016-05-1714329179ND
2016-05-1714329192ND
2016-05-1714329223ND
2016-05-1714329186ND
2016-05-1714329211ND
2016-05-1714329235ND
2016-05-1714329217ND
2016-05-1714329198ND
2016-08-11148217552.40 ppb
2016-08-11148217491.10 ppb
2016-08-11148217371.10 ppb
2016-08-11148217132.80 ppb
2016-08-11148216891.20 ppb
2016-08-11148217012.50 ppb
2016-08-11148217311.20 ppb
2016-08-11148216951.70 ppb
2016-08-11148217191.10 ppb
2016-08-11148217431.30 ppb
2016-08-11148217251.60 ppb
2016-08-11148217072.50 ppb
2016-11-1515297018ND
2016-11-1515297012ND
2016-11-1515297000ND
2016-11-1515296975ND
2016-11-1515296950ND
2016-11-1515296963ND
2016-11-1515296994ND
2016-11-1515296957ND
2016-11-1515296982ND
2016-11-1515297006ND
2016-11-1515296969ND
2016-11-1615296988ND
2017-02-1315724082ND
2017-02-1315724076ND
2017-02-1315724064ND
2017-02-1315724039ND
2017-02-1315724014ND
2017-02-1315724027ND
2017-02-1315724058ND
2017-02-1315724021ND
2017-02-1315724046ND
2017-02-1315724070ND
2017-02-1315724052ND
2017-02-1315724033ND
2017-05-1516176506ND
2017-05-1516176500ND
2017-05-1516176488ND
2017-05-1516176463ND
2017-05-1516176438ND
2017-05-1516176451ND
2017-05-1516176482ND
2017-05-1516176445ND
2017-05-1516176470ND
2017-05-1516176494ND
2017-05-1516176476ND
2017-05-1516176457ND
2017-08-1416646143ND
2017-08-1416646137ND
2017-08-1416646125ND
2017-08-1416646100ND
2017-08-1416646075ND
2017-08-1416646088ND
2017-08-1416646119ND
2017-08-1416646082ND
2017-08-1416646107ND
2017-08-1416646131ND
2017-08-1416646113ND
2017-08-1416646094ND
2017-11-1317091731ND
2017-11-13170917250.700 ppb
2017-11-1317091713ND
2017-11-1317091688ND
2017-11-13170916630.700 ppb
2017-11-1317091676ND
2017-11-1317091707ND
2017-11-1317091670ND
2017-11-13170916950.500 ppb
2017-11-1317091719ND
2017-11-13170917011.30 ppb
2017-11-1317091682ND