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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Columbia

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.

 

216

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20125.21 ppb3215ND - 18.3 ppb
20130.147 ppb322ND - 2.71 ppb
2014ND320ND
20150.0413 ppb321ND - 1.32 ppb
2016ND400ND
2017ND480ND

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
2012-02-022120203-3110.8 ppb
2012-02-022120203-3211.0 ppb
2012-02-022120203-338.63 ppb
2012-02-022120203-348.72 ppb
2012-02-022120203-35ND
2012-02-022120203-36ND
2012-02-022120203-37ND
2012-02-022120203-38ND
2012-04-232120424-23ND
2012-04-232120424-24ND
2012-04-242120425-17ND
2012-04-242120425-1818.3 ppb
2012-04-242120425-1914.5 ppb
2012-04-242120425-2016.1 ppb
2012-04-242120425-211.77 ppb
2012-04-242120425-222.33 ppb
2012-07-232120725-25ND
2012-07-242120725-21ND
2012-07-242120725-2215.1 ppb
2012-07-242120725-2313.7 ppb
2012-07-242120725-2414.5 ppb
2012-07-242120725-26ND
2012-07-242120725-27ND
2012-07-242120725-28ND
2012-10-222121023-10ND
2012-10-222121023-9ND
2012-10-232121024-1014.8 ppb
2012-10-232121024-112.20 ppb
2012-10-232121024-1214.6 ppb
2012-10-232121024-13ND
2012-10-232121024-14ND
2012-10-232121024-9ND
2013-01-282130129-11ND
2013-01-282130129-12ND
2013-01-302130131-102.71 ppb
2013-01-302130131-111.99 ppb
2013-01-302130131-12ND
2013-01-302130131-13ND
2013-01-302130131-14ND
2013-01-302130131-9ND
2013-04-222130423-11ND
2013-04-222130423-12ND
2013-04-252130426-10ND
2013-04-252130426-11ND
2013-04-252130426-12ND
2013-04-252130426-13ND
2013-04-252130426-14ND
2013-04-252130426-9ND
2013-07-222130723-37ND
2013-07-222130723-38ND
2013-07-232120724-17ND
2013-07-232130724-13ND
2013-07-232130724-14ND
2013-07-232130724-15ND
2013-07-232130724-16ND
2013-07-232130724-18ND
2013-10-072131008-10ND
2013-10-072131008-11ND
2013-10-072131008-12ND
2013-10-072131008-13ND
2013-10-072131008-14ND
2013-10-072131008-9ND
2013-10-082131009-3ND
2013-10-082131009-4ND
2014-01-142140115-3ND
2014-01-142140115-4ND
2014-01-152140116-10ND
2014-01-152140116-11ND
2014-01-152140116-12ND
2014-01-152140116-13ND
2014-01-152140116-14ND
2014-01-152140116-9ND
2014-04-072140408-10ND
2014-04-072140408-11ND
2014-04-072140408-12ND
2014-04-072140408-13ND
2014-04-072140408-14ND
2014-04-072140408-9ND
2014-04-092140410-3ND
2014-04-092140410-4ND
2014-07-072140708-11ND
2014-07-072140708-12ND
2014-07-072140708-13ND
2014-07-072140708-14ND
2014-07-072140708-15ND
2014-07-072140708-16ND
2014-07-072140708-17ND
2014-07-072140708-18ND
2014-10-132141014-23ND
2014-10-132141014-24ND
2014-10-132141014-25ND
2014-10-132141014-26ND
2014-10-132141014-27ND
2014-10-132141014-28ND
2014-10-132141014-29ND
2014-10-132141014-30ND
2015-01-122150113-11ND
2015-01-122150113-12ND
2015-01-122150113-13ND
2015-01-122150113-14ND
2015-01-122150113-15ND
2015-01-122150113-16ND
2015-01-122150113-17ND
2015-01-122150113-18ND
2015-04-062150408-19ND
2015-04-062150408-20ND
2015-04-062150408-21ND
2015-04-062150408-221.32 ppb
2015-04-062150408-23ND
2015-04-062150408-24ND
2015-04-062150408-25ND
2015-04-062150408-26ND
2015-07-132150717-53ND
2015-07-132150717-54ND
2015-07-132150717-55ND
2015-07-132150717-56ND
2015-07-132150717-57ND
2015-07-132150717-58ND
2015-07-132150717-59ND
2015-07-132150717-60ND
2015-11-092151116-11ND
2015-11-092151116-12ND
2015-11-092151116-13ND
2015-11-092151116-14ND
2015-11-092151116-15ND
2015-11-092151116-16ND
2015-11-092151116-17ND
2015-11-092151116-18ND
2016-01-112160114-12ND
2016-01-112160114-14ND
2016-01-112160114-15ND
2016-01-112160114-13ND
2016-01-112160114-11ND
2016-01-122160114-16ND
2016-01-122160114-17ND
2016-01-132160114-18ND
2016-04-122160413-12ND
2016-04-122160413-14ND
2016-04-122160413-15ND
2016-04-122160413-13ND
2016-04-122160413-18ND
2016-04-122160413-11ND
2016-04-122160413-16ND
2016-04-122160413-17ND
2016-08-242160826-26ND
2016-08-242160826-16ND
2016-08-242160826-18ND
2016-08-242160826-19ND
2016-08-242160826-23ND
2016-08-242160826-24ND
2016-08-242160826-25ND
2016-08-242160826-17ND
2016-08-242160826-22ND
2016-08-242160826-15ND
2016-08-242160826-20ND
2016-08-242160826-21ND
2016-10-112161014-26ND
2016-10-112161014-16ND
2016-10-112161014-18ND
2016-10-112161014-19ND
2016-10-112161014-23ND
2016-10-112161014-24ND
2016-10-112161014-25ND
2016-10-112161014-17ND
2016-10-112161014-22ND
2016-10-112161014-15ND
2016-10-112161014-20ND
2016-10-112161014-21ND
2017-01-112170113-26ND
2017-01-112170113-16ND
2017-01-112170113-18ND
2017-01-112170113-19ND
2017-01-112170113-23ND
2017-01-112170113-24ND
2017-01-112170113-25ND
2017-01-112170113-17ND
2017-01-112170113-22ND
2017-01-112170113-15ND
2017-01-112170113-20ND
2017-01-112170113-21ND
2017-04-102170414-33ND
2017-04-102170414-34ND
2017-04-102170414-35ND
2017-04-102170414-36ND
2017-04-102170414-37ND
2017-04-102170414-40ND
2017-04-102170414-41ND
2017-04-102170414-42ND
2017-04-102170414-43ND
2017-04-102170414-44ND
2017-05-252170526-17ND
2017-05-252170526-18ND
2017-07-102170714-32ND
2017-07-112170714-29ND
2017-07-112170714-30ND
2017-07-112170714-31ND
2017-07-112170714-33ND
2017-07-112170714-34ND
2017-07-112170714-35ND
2017-07-122170714-36ND
2017-07-122170714-37ND
2017-07-122170714-38ND
2017-07-122170714-39ND
2017-07-122170714-40ND
2017-10-092171012-18ND
2017-10-092171012-26ND
2017-10-102171012-15ND
2017-10-102171012-16ND
2017-10-102171012-17ND
2017-10-102171012-19ND
2017-10-102171012-20ND
2017-10-102171012-21ND
2017-10-112171012-22ND
2017-10-112171012-23ND
2017-10-112171012-24ND
2017-10-112171012-25ND