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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Cotton Plant Water System

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

 

76

Samples

0

Samples exceeding legal limit (MCL)

54

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.800 ppb84ND - 2.04 ppb
20150.700 ppb42ND - 1.40 ppb
20162.20 ppb1612ND - 6.01 ppb
20171.83 ppb1614ND - 4.90 ppb
20183.00 ppb1612ND - 6.40 ppb
20191.89 ppb1614ND - 5.40 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
2014-03-24AD90052ND
2014-03-24AD90052ND
2014-05-2013027732.04 ppb
2014-05-2013027721.16 ppb
2014-05-2013027732.04 ppb
2014-05-2013027721.16 ppb
2014-09-04AD96493ND
2014-09-04AD96493ND
2015-05-21351901140021.40 ppb
2015-05-2135190114001ND
2015-05-21351901140021.40 ppb
2015-05-2135190114001ND
2016-02-091465818ND
2016-02-091465819ND
2016-02-091465819ND
2016-02-091465818ND
2016-05-0214878922.45 ppb
2016-05-0214878914.83 ppb
2016-05-0214878922.45 ppb
2016-05-0214878914.83 ppb
2016-08-0915142140.340 ppb
2016-08-0915142136.01 ppb
2016-08-0915142136.01 ppb
2016-08-0915142140.340 ppb
2016-11-2815440771.85 ppb
2016-11-2815440762.11 ppb
2016-11-2815440762.11 ppb
2016-11-2815440771.85 ppb
2017-02-01352928740201.90 ppb
2017-02-0135292874019ND
2017-02-0135292874019ND
2017-02-01352928740201.90 ppb
2017-05-11353121280121.30 ppb
2017-05-11353121280111.40 ppb
2017-05-11353121280111.40 ppb
2017-05-11353121280121.30 ppb
2017-08-01353280020331.80 ppb
2017-08-01353280020344.90 ppb
2017-08-01353280020331.80 ppb
2017-08-01353280020344.90 ppb
2017-11-03353462290021.40 ppb
2017-11-03353462290021.40 ppb
2017-11-03353462290011.90 ppb
2017-11-03353462290011.90 ppb
2018-02-2135376145002ND
2018-02-21353761450016.40 ppb
2018-02-2135376145002ND
2018-02-21353761450016.40 ppb
2018-05-11353919690021.30 ppb
2018-05-11353919690021.30 ppb
2018-05-11353919690012.10 ppb
2018-05-11353919690012.10 ppb
2018-08-06354098910025.40 ppb
2018-08-06354098910015.90 ppb
2018-08-06354098910015.90 ppb
2018-08-06354098910025.40 ppb
2018-11-1435431652002ND
2018-11-14354316520012.90 ppb
2018-11-14354316520012.90 ppb
2018-11-1435431652002ND
2019-02-13354484730025.40 ppb
2019-02-13354484730025.40 ppb
2019-02-13354484730010.730 ppb
2019-02-13354484730010.730 ppb
2019-05-06354682140021.80 ppb
2019-05-06354682140012.30 ppb
2019-05-06354682140012.30 ppb
2019-05-06354682140021.80 ppb
2019-08-05354886840020.470 ppb
2019-08-05354886840012.10 ppb
2019-08-05354886840012.10 ppb
2019-08-05354886840020.470 ppb
2019-11-06355109370012.30 ppb
2019-11-0635510937002ND
2019-11-06355109370012.30 ppb
2019-11-0635510937002ND