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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Seabrook

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.08 ppb177ND - 22.3 ppb
20151.21 ppb169ND - 2.80 ppb
20162.41 ppb1612ND - 6.10 ppb
20171.04 ppb163ND - 8.20 ppb
2018ND200ND
20190.659 ppb176ND - 2.30 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
2014-02-18AC433531.80 ppb
2014-02-18AC43321ND
2014-02-18AC43328ND
2014-02-18AC43326ND
2014-02-18AC43324ND
2014-04-28AC51832ND
2014-04-28AC51833ND
2014-04-28AC51829ND
2014-04-28AC51835ND
2014-07-14AC595672.40 ppb
2014-07-14AC595651.40 ppb
2014-07-14AC59606ND
2014-07-14AC596053.60 ppb
2014-11-17AC721311.90 ppb
2014-11-17AC7212922.3 ppb
2014-11-17AC721302.00 ppb
2014-12-15AC75068ND
2015-01-20AC76918ND
2015-01-20AC76903ND
2015-01-20AC769301.30 ppb
2015-01-20AC769072.70 ppb
2015-04-15AC88335ND
2015-04-15AC88333ND
2015-04-15AC88328ND
2015-04-15AC88325ND
2015-07-20AD001182.60 ppb
2015-07-20AD001111.60 ppb
2015-07-20AD00108ND
2015-07-20AD001061.40 ppb
2015-11-13AD135882.40 ppb
2015-11-13AD135942.80 ppb
2015-11-13AD135951.80 ppb
2015-11-13AD135912.80 ppb
2016-01-13AD178431.20 ppb
2016-01-13AD178322.10 ppb
2016-01-13AD178422.30 ppb
2016-01-13AD178371.20 ppb
2016-04-05AD317916.10 ppb
2016-04-05AD318134.30 ppb
2016-04-05AD317954.80 ppb
2016-04-05AD317974.60 ppb
2016-07-07AD432903.60 ppb
2016-07-07AD432841.80 ppb
2016-07-07AD433093.50 ppb
2016-07-07AD433083.10 ppb
2016-11-29AD59341ND
2016-11-29AD59334ND
2016-11-29AD59344ND
2016-11-29AD59336ND
2017-01-24AD66458ND
2017-01-24AD66386ND
2017-01-24AD66413ND
2017-01-24AD66412ND
2017-01-24AD66385ND
2017-04-27AD81474ND
2017-04-27AD81469ND
2017-04-27AD81476ND
2017-04-27AD81464ND
2017-07-26AD908171.10 ppb
2017-07-26AD908128.20 ppb
2017-07-26AD908147.40 ppb
2017-11-20AE05398ND
2017-11-20AE05397ND
2017-11-20AE05394ND
2017-11-20AE05395ND
2018-02-14AE13743ND
2018-02-14AE13742ND
2018-02-14AE13737ND
2018-02-14AE13732ND
2018-03-07AE17315ND
2018-05-30AE28027ND
2018-05-30AE28008ND
2018-05-30AE28028ND
2018-05-30AE28006ND
2018-05-30AE28055ND
2018-07-16AE33335ND
2018-07-16AE33341ND
2018-07-16AE33357ND
2018-07-16AE33356ND
2018-07-16AE33405ND
2018-10-18AE43927ND
2018-10-18AE43925ND
2018-10-18AE43928ND
2018-10-18AE43926ND
2018-10-18AE43957ND
2019-01-15AE49841ND
2019-01-15AE49792ND
2019-01-15AE49791ND
2019-01-15AE49793ND
2019-01-15AE49790ND
2019-04-10AE61772ND
2019-04-10AE61775ND
2019-04-10AE61774ND
2019-04-10AE61773ND
2019-07-24AE757532.30 ppb
2019-07-24AE757521.90 ppb
2019-07-24AE757661.80 ppb
2019-07-24AE757552.30 ppb
2019-10-21AE870531.30 ppb
2019-10-21AE87051ND
2019-10-21AE870521.60 ppb
2019-10-21AE87055ND