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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Pennsylvania American Water Pittsburgh

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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)

282

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20126.28 ppb44443.00 ppb - 14.0 ppb
20136.48 ppb48481.60 ppb - 12.0 ppb
20145.71 ppb4846ND - 12.5 ppb
20158.67 ppb48481.50 ppb - 22.3 ppb
20165.31 ppb48481.50 ppb - 13.7 ppb
20172.77 ppb48481.30 ppb - 8.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2012-02-14328014.10 ppb
2012-02-14327983.30 ppb
2012-02-14328044.30 ppb
2012-02-14328003.20 ppb
2012-02-14328024.00 ppb
2012-02-14327993.70 ppb
2012-02-14328035.00 ppb
2012-02-14327973.80 ppb
2012-05-15330016.00 ppb
2012-05-15330024.00 ppb
2012-05-15330035.00 ppb
2012-05-15330045.00 ppb
2012-05-15330055.00 ppb
2012-05-15330065.00 ppb
2012-05-15330075.00 ppb
2012-05-15330084.00 ppb
2012-05-15330094.00 ppb
2012-05-15330104.00 ppb
2012-05-15330115.00 ppb
2012-05-15330127.00 ppb
2012-08-143320014.0 ppb
2012-08-143320111.0 ppb
2012-08-14332029.00 ppb
2012-08-143320311.0 ppb
2012-08-143320412.0 ppb
2012-08-143320511.0 ppb
2012-08-143320612.0 ppb
2012-08-14332078.00 ppb
2012-08-143320811.0 ppb
2012-08-143320910.00 ppb
2012-08-14332109.00 ppb
2012-08-14332119.00 ppb
2012-11-13334124.70 ppb
2012-11-13334136.70 ppb
2012-11-13334143.20 ppb
2012-11-13334154.30 ppb
2012-11-13334164.10 ppb
2012-11-13334175.50 ppb
2012-11-13334183.90 ppb
2012-11-13334193.00 ppb
2012-11-13334208.30 ppb
2012-11-13334214.00 ppb
2012-11-13334225.20 ppb
2012-11-13334235.80 ppb
2013-02-12336162.50 ppb
2013-02-12336171.70 ppb
2013-02-12336181.70 ppb
2013-02-12336192.20 ppb
2013-02-12336202.70 ppb
2013-02-12336213.60 ppb
2013-02-12336222.60 ppb
2013-02-12336231.60 ppb
2013-02-12336241.80 ppb
2013-02-12336251.60 ppb
2013-02-12336261.80 ppb
2013-02-12336272.00 ppb
2013-05-14338186.80 ppb
2013-05-14338195.30 ppb
2013-05-14338204.90 ppb
2013-05-14338216.60 ppb
2013-05-14338226.40 ppb
2013-05-14338235.50 ppb
2013-05-14338246.20 ppb
2013-05-14338255.10 ppb
2013-05-14338265.30 ppb
2013-05-14338275.60 ppb
2013-05-14338285.50 ppb
2013-05-14338295.50 ppb
2013-08-15340249.30 ppb
2013-08-15340257.50 ppb
2013-08-15340266.40 ppb
2013-08-15340278.10 ppb
2013-08-15340289.00 ppb
2013-08-15340298.70 ppb
2013-08-15340307.80 ppb
2013-08-15340316.60 ppb
2013-08-15340328.60 ppb
2013-08-15340337.00 ppb
2013-08-15340348.10 ppb
2013-08-15340358.80 ppb
2013-11-123422010.2 ppb
2013-11-123422110.9 ppb
2013-11-12342228.10 ppb
2013-11-123422311.2 ppb
2013-11-12342248.70 ppb
2013-11-123422511.7 ppb
2013-11-12342268.20 ppb
2013-11-12342279.40 ppb
2013-11-123422812.0 ppb
2013-11-123422910.4 ppb
2013-11-12342309.10 ppb
2013-11-123423110.5 ppb
2014-02-11343121.80 ppb
2014-02-11343131.50 ppb
2014-02-1134314ND
2014-02-11343151.60 ppb
2014-02-11343172.10 ppb
2014-02-11343181.50 ppb
2014-02-1134319ND
2014-02-11343202.40 ppb
2014-02-11343211.000 ppb
2014-02-11343221.50 ppb
2014-02-11343231.70 ppb
2014-02-11343161.60 ppb
2014-05-12256912019.80 ppb
2014-05-12256911015.90 ppb
2014-05-12256909015.50 ppb
2014-05-12256905019.30 ppb
2014-05-12256901015.90 ppb
2014-05-12256903019.20 ppb
2014-05-12256908015.90 ppb
2014-05-12256902015.70 ppb
2014-05-12256906015.60 ppb
2014-05-12256910015.80 ppb
2014-05-12256907015.70 ppb
2014-05-12256904019.10 ppb
2014-08-122652790112.5 ppb
2014-08-122652780110.9 ppb
2014-08-12265276019.30 ppb
2014-08-122652680112.3 ppb
2014-08-122652600110.5 ppb
2014-08-122652660111.7 ppb
2014-08-12265275018.10 ppb
2014-08-12265265018.50 ppb
2014-08-12265273018.60 ppb
2014-08-122652770110.2 ppb
2014-08-122652740110.5 ppb
2014-08-122652670111.3 ppb
2014-11-11273719014.20 ppb
2014-11-11273718013.40 ppb
2014-11-11273716013.00 ppb
2014-11-11273709015.90 ppb
2014-11-11273701014.00 ppb
2014-11-11273707015.50 ppb
2014-11-11273715013.20 ppb
2014-11-11273706014.20 ppb
2014-11-11273713013.90 ppb
2014-11-11273717013.40 ppb
2014-11-11273714014.10 ppb
2014-11-11273708015.00 ppb
2015-02-10124582922.80 ppb
2015-02-10124582862.40 ppb
2015-02-10124582741.80 ppb
2015-02-10124582492.80 ppb
2015-02-10124582242.30 ppb
2015-02-10124582372.70 ppb
2015-02-10124582681.50 ppb
2015-02-10124582312.40 ppb
2015-02-10124582562.00 ppb
2015-02-10124582801.50 ppb
2015-02-10124582622.40 ppb
2015-02-10124582432.80 ppb
2015-05-12128159148.90 ppb
2015-05-12128159084.30 ppb
2015-05-12128158965.10 ppb
2015-05-12128158717.80 ppb
2015-05-12128158464.10 ppb
2015-05-12128158598.70 ppb
2015-05-12128158903.50 ppb
2015-05-12128158533.90 ppb
2015-05-12128158784.50 ppb
2015-05-12128159024.40 ppb
2015-05-12128158844.40 ppb
2015-05-12128158658.50 ppb
2015-08-111319816810.5 ppb
2015-08-11131981628.50 ppb
2015-08-111319815010.4 ppb
2015-08-11131981259.10 ppb
2015-08-11131981008.40 ppb
2015-08-11131981139.80 ppb
2015-08-11131981449.90 ppb
2015-08-11131981078.00 ppb
2015-08-11131981329.00 ppb
2015-08-11131981569.30 ppb
2015-08-11131981389.30 ppb
2015-08-11131981199.90 ppb
2015-11-091357352115.0 ppb
2015-11-091357351521.6 ppb
2015-11-091357350317.9 ppb
2015-11-091357347812.0 ppb
2015-11-091357345320.8 ppb
2015-11-091357346610.1 ppb
2015-11-091357349722.3 ppb
2015-11-091357346019.3 ppb
2015-11-091357348519.9 ppb
2015-11-091357350919.1 ppb
2015-11-091357349118.9 ppb
2015-11-091357347211.7 ppb
2016-02-10139276833.00 ppb
2016-02-10139276773.00 ppb
2016-02-10139276651.50 ppb
2016-02-10139276402.70 ppb
2016-02-10139276152.10 ppb
2016-02-10139276282.70 ppb
2016-02-10139276592.60 ppb
2016-02-10139276222.20 ppb
2016-02-10139276471.80 ppb
2016-02-10139276711.70 ppb
2016-02-10139276533.60 ppb
2016-02-10139276342.70 ppb
2016-05-17143292452.90 ppb
2016-05-17143292392.20 ppb
2016-05-17143292272.00 ppb
2016-05-17143292022.70 ppb
2016-05-17143291772.10 ppb
2016-05-17143291902.80 ppb
2016-05-17143292212.90 ppb
2016-05-17143291842.00 ppb
2016-05-17143292092.30 ppb
2016-05-17143292331.60 ppb
2016-05-17143292153.00 ppb
2016-05-17143291963.10 ppb
2016-08-111482175313.6 ppb
2016-08-111482174710.1 ppb
2016-08-11148217359.90 ppb
2016-08-111482171113.7 ppb
2016-08-111482168710.00 ppb
2016-08-111482169912.7 ppb
2016-08-111482172910.2 ppb
2016-08-111482169313.0 ppb
2016-08-111482171710.2 ppb
2016-08-111482174111.8 ppb
2016-08-111482172312.0 ppb
2016-08-111482170512.9 ppb
2016-11-15152970165.30 ppb
2016-11-15152970104.90 ppb
2016-11-15152969984.90 ppb
2016-11-15152969734.50 ppb
2016-11-15152969484.80 ppb
2016-11-15152969614.30 ppb
2016-11-15152969925.20 ppb
2016-11-15152969554.00 ppb
2016-11-15152969804.90 ppb
2016-11-15152970044.20 ppb
2016-11-15152969674.80 ppb
2016-11-16152969863.70 ppb
2017-02-13157240802.50 ppb
2017-02-13157240742.20 ppb
2017-02-13157240621.90 ppb
2017-02-13157240372.30 ppb
2017-02-13157240122.00 ppb
2017-02-13157240252.30 ppb
2017-02-13157240561.90 ppb
2017-02-13157240192.10 ppb
2017-02-13157240442.00 ppb
2017-02-13157240682.20 ppb
2017-02-13157240502.20 ppb
2017-02-13157240312.10 ppb
2017-05-15161765041.80 ppb
2017-05-15161764981.70 ppb
2017-05-15161764861.30 ppb
2017-05-15161764612.00 ppb
2017-05-15161764362.00 ppb
2017-05-15161764491.60 ppb
2017-05-15161764802.40 ppb
2017-05-15161764432.20 ppb
2017-05-15161764681.90 ppb
2017-05-15161764921.50 ppb
2017-05-15161764742.20 ppb
2017-05-15161764551.60 ppb
2017-08-14166461414.20 ppb
2017-08-14166461353.60 ppb
2017-08-14166461233.10 ppb
2017-08-14166460984.50 ppb
2017-08-14166460733.80 ppb
2017-08-14166460864.40 ppb
2017-08-14166461173.30 ppb
2017-08-14166460803.20 ppb
2017-08-14166461053.20 ppb
2017-08-14166461293.20 ppb
2017-08-14166461113.70 ppb
2017-08-14166460924.80 ppb
2017-11-13170917293.00 ppb
2017-11-13170917234.00 ppb
2017-11-13170917111.90 ppb
2017-11-13170916862.30 ppb
2017-11-13170916615.10 ppb
2017-11-13170916742.00 ppb
2017-11-13170917051.70 ppb
2017-11-13170916683.60 ppb
2017-11-13170916933.80 ppb
2017-11-13170917172.60 ppb
2017-11-13170916998.30 ppb
2017-11-13170916801.60 ppb