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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Pendleton Water Association

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

 

98

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.233 ppb182ND - 2.10 ppb
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-01-21L0039248-042.10 ppb
2014-01-21L0039248-03ND
2014-01-21L0039248-042.10 ppb
2014-01-21L0039248-03ND
2014-04-07L0041788-01ND
2014-04-07L0041788-02ND
2014-04-07AD90490ND
2014-04-07L0041788-02ND
2014-04-07L0041788-01ND
2014-04-07AD90490ND
2014-07-0735145584001ND
2014-07-0735145584002ND
2014-07-0735145584002ND
2014-07-0735145584001ND
2014-10-01L0048869-01ND
2014-10-01L0048869-02ND
2014-10-01L0048869-02ND
2014-10-01L0048869-01ND
2015-01-12L0052909-01ND
2015-01-12L0052909-02ND
2015-01-12L0052909-02ND
2015-01-12L0052909-01ND
2015-04-13LA5871-2ND
2015-04-13LA5871-1ND
2015-04-13LA5871-2ND
2015-04-13LA5871-1ND
2015-07-0235196431002ND
2015-07-0235196431002ND
2015-07-0235196431001ND
2015-07-0235196431001ND
2015-10-14LA12858-1ND
2015-10-14LA12858-2ND
2015-10-14LA12858-1ND
2015-10-14LA12858-2ND
2016-01-1335225177001ND
2016-01-1335225177002ND
2016-01-1335225177001ND
2016-01-1335225177002ND
2016-04-13LA19410-2ND
2016-04-13LA19410-1ND
2016-04-13LA19410-2ND
2016-04-13LA19410-1ND
2016-07-133525848002ND
2016-07-133525848002ND
2016-07-1335254848001ND
2016-07-1335254848001ND
2016-10-17LA26665-2ND
2016-10-17LA26665-2ND
2016-10-17LA26665-1ND
2016-10-17LA26665-1ND
2017-01-1935290205008ND
2017-01-1935290205007ND
2017-01-1935290205008ND
2017-01-1935290205007ND
2017-04-1835307967007ND
2017-04-1835307967007ND
2017-04-1835307967008ND
2017-04-1835307967008ND
2017-07-2035325646015ND
2017-07-2035325646014ND
2017-07-2035325646015ND
2017-07-2035325646014ND
2017-10-0235340019001ND
2017-10-0235340019002ND
2017-10-0235340019001ND
2017-10-0235340019002ND
2018-01-2435370508002ND
2018-01-2435370508002ND
2018-01-2435370508001ND
2018-01-2435370508001ND
2018-04-2635388820002ND
2018-04-2635388820001ND
2018-04-2635388820001ND
2018-04-2635388820002ND
2018-07-2335406479002ND
2018-07-2335406479001ND
2018-07-2335406479002ND
2018-07-2335406479001ND
2018-10-1835425485002ND
2018-10-1835425485001ND
2018-10-1835425485001ND
2018-10-1835425485002ND
2019-01-2335444330002ND
2019-01-2335444330001ND
2019-01-2335444330001ND
2019-01-2335444330002ND
2019-04-1535462942002ND
2019-04-1535462942002ND
2019-04-1535462942001ND
2019-04-1535462942001ND
2019-07-1735483517002ND
2019-07-1735483517001ND
2019-07-1735483517001ND
2019-07-1735483517002ND
2019-10-2335507606001ND
2019-10-2335507606002ND
2019-10-2335507606001ND
2019-10-2335507606002ND