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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Neosho

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

 

113

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND190ND
2015ND180ND
20160.107 ppb183ND - 0.700 ppb
20170.0283 ppb181ND - 0.510 ppb
2018ND180ND
2019ND220ND

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
2014-02-10AC18204ND
2014-02-10AC18205ND
2014-02-10AC18206ND
2014-02-10AC18207ND
2014-04-01AC21330ND
2014-04-01AC21331ND
2014-04-01AC21332ND
2014-05-14AC23212ND
2014-05-14AC23213ND
2014-05-14AC23214ND
2014-05-14AC23215ND
2014-09-03AC33370ND
2014-09-03AC33371ND
2014-09-03AC33372ND
2014-09-03AC33373ND
2014-11-12AC38260ND
2014-11-12AC38261ND
2014-11-12AC38262ND
2014-11-12AC38263ND
2015-02-09AC41987ND
2015-02-09AC41989ND
2015-02-09AC41990ND
2015-02-09AC41988ND
2015-03-25AC44434ND
2015-03-25AC44433ND
2015-05-06AC46558ND
2015-05-06AC46556ND
2015-05-06AC46555ND
2015-05-06AC46557ND
2015-08-17AC57463ND
2015-08-17AC57464ND
2015-08-17AC57462ND
2015-08-17AC57461ND
2015-11-23AC62821ND
2015-11-23AC62823ND
2015-11-23AC62824ND
2015-11-23AC62822ND
2016-02-17AC66367ND
2016-02-17AC66368ND
2016-02-17AC66369ND
2016-02-17AC66370ND
2016-03-14AC68327ND
2016-03-14AC68328ND
2016-05-10AC72064ND
2016-05-10AC72061ND
2016-05-10AC72062ND
2016-05-10AC720630.570 ppb
2016-08-09AC81652ND
2016-08-09AC81651ND
2016-08-09AC816500.700 ppb
2016-08-09AC816530.650 ppb
2016-11-09AC86962ND
2016-11-09AC86960ND
2016-11-09AC86963ND
2016-11-09AC86961ND
2017-02-06AC90820ND
2017-02-06AC908210.510 ppb
2017-02-06AC90818ND
2017-02-06AC90819ND
2017-03-27AC92731ND
2017-03-28AC92730ND
2017-05-03AC95791ND
2017-05-03AC95792ND
2017-05-03AC95793ND
2017-05-03AC95794ND
2017-08-08AD03477ND
2017-08-08AD03480ND
2017-08-08AD03479ND
2017-08-08AD03478ND
2017-11-13AD09505ND
2017-11-13AD09506ND
2017-11-13AD09504ND
2017-11-13AD09507ND
2018-02-07AD14290ND
2018-02-07AD14291ND
2018-02-07AD14292ND
2018-02-07AD14293ND
2018-05-07AD20521ND
2018-05-07AD20522ND
2018-05-07AD20523ND
2018-05-07AD20524ND
2018-05-14AD17330ND
2018-05-14AD17331ND
2018-08-06AD31257ND
2018-08-06AD31258ND
2018-08-06AD31255ND
2018-08-06AD31256ND
2018-11-02AD35734ND
2018-11-02AD35731ND
2018-11-02AD35732ND
2018-11-02AD35733ND
2019-02-06AD39399ND
2019-02-06AD39400ND
2019-02-06AD39401ND
2019-02-06AD39402ND
2019-03-19AD41169ND
2019-03-19AD41170ND
2019-05-06AD47481ND
2019-05-06AD47482ND
2019-05-06AD47483ND
2019-05-06AD47484ND
2019-08-12AD53986ND
2019-08-12AD53987ND
2019-08-12AD53988ND
2019-08-12AD53989ND
2019-11-04AD58109ND
2019-11-04AD58110ND
2019-11-04AD58111ND
2019-11-04AD58112ND
2019-11-25AD58971ND
2019-11-25AD58972ND
2019-11-25AD58973ND
2019-11-25AD58974ND