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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Town of Warrenton

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

 

107

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND170ND
2015ND170ND
2016ND190ND
2017ND170ND
2018ND180ND
20190.0263 ppb191ND - 0.500 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
2014-02-18E131207393ND
2014-02-18E131207392ND
2014-02-18E131207396ND
2014-02-18E131207398ND
2014-05-27E140500850ND
2014-05-27E140500846ND
2014-05-27E140500852ND
2014-05-27E140500848ND
2014-08-19E140606031ND
2014-08-19E140606032ND
2014-08-19E140606021ND
2014-08-19E140606034ND
2014-09-09E140606030ND
2014-11-18E140903265ND
2014-11-18E140903260ND
2014-11-18E140903261ND
2014-11-18E140903266ND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-08-18VA010-DCLSND
2015-08-18VA010-DCLSND
2015-08-18VA010-DCLSND
2015-08-18VA010-DCLSND
2015-09-15VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2016-02-17E151205729ND
2016-02-17E151205734ND
2016-02-17E151205732ND
2016-02-17E151205724ND
2016-05-17E160301578ND
2016-05-17E160301585ND
2016-05-17E160301575ND
2016-05-18E160301583ND
2016-08-16E160603979ND
2016-08-16E160603995ND
2016-08-16E160603982ND
2016-08-16E160603974ND
2016-09-20E160603992ND
2016-09-20E160603978ND
2016-09-20E160603990ND
2016-11-15E160903135ND
2016-11-15E160903132ND
2016-11-15E160903133ND
2016-11-15E160903134ND
2017-02-21E161205913ND
2017-02-21E161205922ND
2017-02-21E161205921ND
2017-02-21E161205923ND
2017-05-16E170304470ND
2017-05-16E170304468ND
2017-05-16E170304462ND
2017-05-16E170304466ND
2017-08-15E170608396ND
2017-08-15E170608399ND
2017-08-15E170608402ND
2017-08-16E170608398ND
2017-08-22E170608404ND
2017-11-20E170902524ND
2017-11-20E170902528ND
2017-11-20E170902530ND
2017-11-20E170902532ND
2018-02-20E171204621ND
2018-02-20E171204623ND
2018-02-20E171204628ND
2018-02-20E171204630ND
2018-05-15E180306287ND
2018-05-15E180306291ND
2018-05-15E180306293ND
2018-05-15E180306294ND
2018-06-25E180607845ND
2018-07-23E180702460ND
2018-08-22E180702470ND
2018-08-22E180702472ND
2018-08-22E180702496ND
2018-08-22E180702504ND
2018-11-19E180905410ND
2018-11-19E180905412ND
2018-11-19E180905414ND
2018-11-19E180905415ND
2019-02-19E181206789ND
2019-02-19E181206791ND
2019-02-19E181206793ND
2019-02-19E181206794ND
2019-05-21E190308241ND
2019-05-21E190308248ND
2019-05-21E190308251ND
2019-05-21E190308253ND
2019-08-20E190610067ND
2019-08-20E190610071ND
2019-08-20E190610072ND
2019-08-20E1906100750.500 ppb
2019-08-27E190610081ND
2019-08-27E190610086ND
2019-08-27E190610091ND
2019-11-19E191002057ND
2019-11-19E191002059ND
2019-11-19E191002064ND
2019-11-19E191002066ND