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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Regional Water Authority

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.

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352

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.00862 ppb581ND - 0.500 ppb
2015ND590ND
2016ND580ND
20170.00833 ppb601ND - 0.500 ppb
20180.0103 ppb581ND - 0.600 ppb
2019ND590ND

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
2014-03-04DBP 200391954ND
2014-03-04DBP 200391959ND
2014-03-04DBP 200391974ND
2014-03-04VOC1 200391963ND
2014-03-04VOC1 200391964ND
2014-03-04VOC1 200391965ND
2014-03-04VOC1 200391977ND
2014-03-04VOC1 200391978ND
2014-03-04VOC1 200391979ND
2014-03-04VOC1 200391980ND
2014-03-04VOC1 200392005ND
2014-03-04VOC1 200392007ND
2014-03-05DBP 200392092ND
2014-03-05DBP 200392093ND
2014-03-05DBP 200392094ND
2014-03-06DBP 200392152ND
2014-03-06DBP 200392201ND
2014-03-06DBP 200392202ND
2014-03-07DBP 200392306ND
2014-03-07DBP 200392307ND
2014-03-07DBP 200392308ND
2014-03-25VOC1 200393100ND
2014-06-02DBP 200396948ND
2014-06-02DBP 200396949ND
2014-06-02DBP 2003969500.500 ppb
2014-06-03DBP 200396959ND
2014-06-03DBP 200396964ND
2014-06-03DBP 200396982ND
2014-06-03DBP 200397073ND
2014-06-05DBP 200397229ND
2014-06-05DBP 200397327ND
2014-06-05DBP 200397328ND
2014-06-06DBP 200397354ND
2014-06-06DBP 200397355ND
2014-09-02DBP 200403272ND
2014-09-02DBP 200403277ND
2014-09-02DBP 200403302ND
2014-09-03DBP 200403470ND
2014-09-03DBP 200403471ND
2014-09-03DBP 200403472ND
2014-09-04DBP 200403517ND
2014-09-04DBP 200403556ND
2014-09-04DBP 200403557ND
2014-09-04DBP 200403558ND
2014-09-06DBP 200403687ND
2014-09-06DBP 200403688ND
2014-12-02DBP 200408683ND
2014-12-02DBP 200408688ND
2014-12-02DBP 200408706ND
2014-12-02DBP 200408748ND
2014-12-02DBP 200408749ND
2014-12-02DBP 200408750ND
2014-12-03DBP 200408856ND
2014-12-03DBP 200408857ND
2014-12-04DBP 200408946ND
2014-12-04DBP 200408968ND
2014-12-04DBP 200408969ND
2014-12-04DBP 200408970ND
2015-03-02DBP 200412851ND
2015-03-02DBP 200412850ND
2015-03-03DBP 200412863ND
2015-03-03DBP 200412929ND
2015-03-03DBP 200412883ND
2015-03-03DBP 200412870ND
2015-03-03DBP 200412928ND
2015-03-03VOC1 200412899ND
2015-03-03VOC1 200412902ND
2015-03-03VOC1 200412900ND
2015-03-03VOC1 200412879ND
2015-03-03VOC1 200412881ND
2015-03-03VOC1 200412907ND
2015-03-03VOC1 200412923ND
2015-03-04DBP 200413051ND
2015-03-04VOC1 200413022ND
2015-03-05DBP 200413155ND
2015-03-05DBP 200413154ND
2015-03-05DBP 200413156ND
2015-03-05DBP 200413130ND
2015-03-10VOC1 200413328ND
2015-03-18VOC1 200413713ND
2015-06-01DBP 200417605ND
2015-06-01DBP 200417595ND
2015-06-01DBP 200417603ND
2015-06-01DBP 200417602ND
2015-06-01DBP 200417563ND
2015-06-01DBP 200417604ND
2015-06-02DBP 200417629ND
2015-06-02DBP 200417701ND
2015-06-02DBP 200417699ND
2015-06-02DBP 200417624ND
2015-06-03DBP 200417823ND
2015-06-03DBP 200417819ND
2015-09-01DBP 200423812ND
2015-09-01DBP 200423867ND
2015-09-01DBP 200423866ND
2015-09-01DBP 200423829ND
2015-09-01DBP 200423868ND
2015-09-01DBP 200423869ND
2015-09-01DBP 200423821ND
2015-09-01DBP 200423807ND
2015-09-02DBP 200424081ND
2015-09-02DBP 200424082ND
2015-09-02DBP 200424080ND
2015-09-04DBP 200424271ND
2015-12-01DBP 200429601ND
2015-12-01DBP 200429546ND
2015-12-01DBP 200429602ND
2015-12-01DBP 200429604ND
2015-12-01DBP 200429556ND
2015-12-01DBP 200429541ND
2015-12-02DBP 200429725ND
2015-12-02DBP 200429752ND
2015-12-02DBP 200429751ND
2015-12-03DBP 200429876ND
2015-12-03DBP 200429875ND
2015-12-03DBP 200429877ND
2015-12-04VOC1 200429711ND
2016-02-29VOC1 200434386ND
2016-02-29VOC1 200434387ND
2016-02-29VOC1 200434371ND
2016-02-29VOC1 200434372ND
2016-03-01DBP 200434420ND
2016-03-01DBP 200434432ND
2016-03-01DBP 200434439ND
2016-03-01DBP 200434518ND
2016-03-01VOC1 200434428ND
2016-03-01VOC1 200434431ND
2016-03-01VOC1 200434429ND
2016-03-01VOC1 200434430ND
2016-03-01VOC1 200434474ND
2016-03-02DBP 200434652ND
2016-03-02DBP 200434653ND
2016-03-03DBP 200434705ND
2016-03-03DBP 200434734ND
2016-03-03DBP 200434790ND
2016-03-03DBP 200434791ND
2016-03-03VOC1 200434800ND
2016-03-04DBP 200434819ND
2016-03-04DBP 200434820ND
2016-06-01DBP 200441025ND
2016-06-01DBP 200441026ND
2016-06-01DBP 200441037ND
2016-06-01DBP 200441054ND
2016-06-01DBP 200441055ND
2016-06-01DBP 200441056ND
2016-06-01DBP 200441057ND
2016-06-01DBP 200441058ND
2016-06-02DBP 200441262ND
2016-06-02DBP 200441297ND
2016-06-02DBP 200441298ND
2016-06-02DBP 200441299ND
2016-09-06DBP 200448969ND
2016-09-06DBP 200448974ND
2016-09-06DBP 200449001ND
2016-09-06DBP 200449014ND
2016-09-06DBP 200449015ND
2016-09-06DBP 200449016ND
2016-09-07DBP 200449214ND
2016-09-08DBP 200449407ND
2016-09-08DBP 200449408ND
2016-09-09DBP 200449500ND
2016-09-12DBP 200449545ND
2016-09-12DBP 200449547ND
2016-12-05DBP 200456081ND
2016-12-05DBP 200456083ND
2016-12-06DBP 200456088ND
2016-12-06DBP 200456110ND
2016-12-06DBP 200456115ND
2016-12-06DBP 200456175ND
2016-12-07DBP 200456358ND
2016-12-07DBP 200456359ND
2016-12-08DBP 200456453ND
2016-12-08DBP 200456460ND
2016-12-08DBP 200456461ND
2016-12-08DBP 200456462ND
2017-02-27VOC1 200461316ND
2017-02-27VOC1 200461317ND
2017-02-27VOC1 200461301ND
2017-02-28VOC1 200461369ND
2017-02-28VOC1 200461372ND
2017-02-28VOC1 200461370ND
2017-02-28VOC1 200461371ND
2017-02-28VOC1 200461405ND
2017-02-28VOC1 200461407ND
2017-03-01DBP 200461496ND
2017-03-01DBP 200461542ND
2017-03-01DBP 200461543ND
2017-03-01DBP 200461544ND
2017-03-01DBP 200461545ND
2017-03-01DBP 200461546ND
2017-03-02DBP 200461650ND
2017-03-02DBP 200461651ND
2017-03-02DBP 200461673ND
2017-03-02DBP 200461674ND
2017-03-02DBP 200461675ND
2017-03-02VOC1 200461633ND
2017-03-03DBP 200461727ND
2017-06-05DBP 200468420ND
2017-06-05DBP 200468421ND
2017-06-06DBP 200468476ND
2017-06-06DBP 200468481ND
2017-06-06DBP 200468500ND
2017-06-07DBP 200468669ND
2017-06-07DBP 200468670ND
2017-06-08DBP 200468850ND
2017-06-08DBP 200468946ND
2017-06-08DBP 200468947ND
2017-06-08DBP 200468948ND
2017-06-08DBP 200468949ND
2017-06-19VOC1 200469687ND
2017-06-19VOC1 200469688ND
2017-09-05DBP 200475785ND
2017-09-05DBP 200475790ND
2017-09-05DBP 200475800ND
2017-09-07DBP 200476104ND
2017-09-07DBP 200476220ND
2017-09-07DBP 200476221ND
2017-09-07DBP 200476222ND
2017-09-07DBP 200476224ND
2017-09-08DBP 200476302ND
2017-09-08DBP 200476304ND
2017-09-08DBP 200476305ND
2017-09-08DBP 2004763060.500 ppb
2017-12-05DBP 200483376ND
2017-12-05DBP 200483381ND
2017-12-05DBP 200483391ND
2017-12-07DBP 200483770ND
2017-12-07DBP 200483771ND
2017-12-07DBP 200483772ND
2017-12-07DBP 200483773ND
2017-12-07DBP 200483774ND
2017-12-08DBP 200483834ND
2017-12-08DBP 200483843ND
2017-12-08DBP 200483844ND
2017-12-08DBP 200483845ND
2018-03-05VOC1 200489156ND
2018-03-05VOC1 200489128ND
2018-03-05VOC1 200489129ND
2018-03-05VOC1 200489150ND
2018-03-06DBP 200489268ND
2018-03-06DBP 200489275ND
2018-03-06DBP 200489287ND
2018-03-06VOC1 200489295ND
2018-03-06VOC1 2004892980.600 ppb
2018-03-06VOC1 200489296ND
2018-03-07DBP 200489537ND
2018-03-07DBP 200489538ND
2018-03-07DBP 200489539ND
2018-03-07DBP 200489540ND
2018-03-07DBP 200489541ND
2018-03-08DBP 200489565ND
2018-03-09DBP 200489701ND
2018-03-09DBP 200489702ND
2018-03-09DBP 200489703ND
2018-06-05DBP 200495984ND
2018-06-05DBP 200495989ND
2018-06-05DBP 200496002ND
2018-06-06DBP 200496235ND
2018-06-07DBP 200496375ND
2018-06-07DBP 200496376ND
2018-06-07DBP 200496417ND
2018-06-08DBP 200496507ND
2018-06-08DBP 200496508ND
2018-06-08DBP 200496509ND
2018-06-08DBP 200496510ND
2018-06-08DBP 200496511ND
2018-08-17VOC1 200502735ND
2018-09-04DBP 200503732ND
2018-09-04DBP 200503737ND
2018-09-04DBP 200503842ND
2018-09-04DBP 200503912ND
2018-09-04DBP 200503913ND
2018-09-04DBP 200503914ND
2018-09-05DBP 200503981ND
2018-09-05DBP 200504086ND
2018-09-05DBP 200504087ND
2018-09-06DBP 200504185ND
2018-09-06DBP 200504211ND
2018-09-07DBP 200504441ND
2018-11-29VOC1 200514106ND
2018-11-29VOC1 200514121ND
2018-12-03DBP 200514372ND
2018-12-03DBP 200514406ND
2018-12-04DBP 200514447ND
2018-12-04DBP 200514452ND
2018-12-04DBP 200514625ND
2018-12-04DBP 200514626ND
2018-12-04DBP 200514627ND
2018-12-04DBP 200514628ND
2018-12-04DBP 200514629ND
2018-12-05DBP 200514952ND
2018-12-06DBP 200515069ND
2018-12-06DBP 200515070ND
2019-03-04DBP 200523215ND
2019-03-04DBP 200523217ND
2019-03-04VOC1 200523150ND
2019-03-04VOC1 200523151ND
2019-03-04VOC1 200523175ND
2019-03-04VOC1 200523176ND
2019-03-05DBP 200523262ND
2019-03-05DBP 200523269ND
2019-03-05DBP 200523456ND
2019-03-05DBP 200523457ND
2019-03-05DBP 200523458ND
2019-03-05DBP 200523459ND
2019-03-05DBP 200523463ND
2019-03-05VOC1 200523251ND
2019-03-05VOC1 200523254ND
2019-03-05VOC1 200523252ND
2019-03-05VOC1 200523253ND
2019-03-05VOC1 200523284ND
2019-03-05VOC1 200523286ND
2019-03-07DBP 200523884ND
2019-03-08DBP 200524000ND
2019-03-08DBP 200524002ND
2019-05-08VOC1 200531298ND
2019-06-03DBP 200534373ND
2019-06-03DBP 200534414ND
2019-06-04DBP 200534491ND
2019-06-04DBP 200534496ND
2019-06-04DBP 200534600ND
2019-06-04DBP 200534725ND
2019-06-04DBP 200534727ND
2019-06-04DBP 200534729ND
2019-06-05DBP 200535039ND
2019-06-05DBP 200535041ND
2019-06-06DBP 200535197ND
2019-06-07DBP 200535357ND
2019-09-03DBP 200546988ND
2019-09-03DBP 200546993ND
2019-09-04DBP 200547400ND
2019-09-04DBP 200547402ND
2019-09-04DBP 200547403ND
2019-09-04DBP 200547404ND
2019-09-04DBP 200547405ND
2019-09-05DBP 200547460ND
2019-09-05DBP 200547667ND
2019-09-06DBP 200547826ND
2019-09-06DBP 200547827ND
2019-09-06DBP 200547828ND
2019-12-02DBP 200558405ND
2019-12-02DBP 200558406ND
2019-12-02DBP 200558407ND
2019-12-03DBP 200558454ND
2019-12-03DBP 200558459ND
2019-12-03DBP 200558612ND
2019-12-04DBP 200558916ND
2019-12-04DBP 200558917ND
2019-12-04DBP 200558919ND
2019-12-05DBP 200559073ND
2019-12-05DBP 200559098ND
2019-12-06DBP 200559195ND