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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Columbus

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

 

206

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND370ND
20150.841 ppb3414ND - 4.90 ppb
20160.206 ppb346ND - 1.20 ppb
2017ND340ND
2018ND330ND
2019ND340ND

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
2014-01-10AI26333ND
2014-01-10AI26334ND
2014-01-10AI26335ND
2014-01-10AI26336ND
2014-01-10AI26337ND
2014-01-10AI26338ND
2014-01-10AI26339ND
2014-01-10AI26340ND
2014-01-20AI26898ND
2014-01-20AI26899ND
2014-04-08AI37669ND
2014-04-08AI37670ND
2014-04-08AI37671ND
2014-04-08AI37672ND
2014-04-08AI37673ND
2014-04-08AI37674ND
2014-04-08AI37675ND
2014-04-08AI37676ND
2014-05-05AI39470ND
2014-07-08AI45284ND
2014-07-08AI45285ND
2014-07-08AI45286ND
2014-07-08AI45287ND
2014-07-08AI45288ND
2014-07-08AI45289ND
2014-07-08AI45290ND
2014-07-09AI45291ND
2014-07-30AI47500ND
2014-10-07AI57045ND
2014-10-07AI57046ND
2014-10-07AI57047ND
2014-10-07AI57048ND
2014-10-07AI57049ND
2014-10-07AI57050ND
2014-10-07AI57051ND
2014-10-07AI57052ND
2014-11-03AI58784ND
2015-01-13AI62774ND
2015-01-13AI62775ND
2015-01-13AI62776ND
2015-01-13AI62777ND
2015-01-13AI62778ND
2015-01-13AI62779ND
2015-01-13AI62780ND
2015-01-13AI62781ND
2015-03-24AI69581ND
2015-03-24AI69582ND
2015-04-07AI74259ND
2015-04-07AI74260ND
2015-04-07AI74261ND
2015-04-07AI74262ND
2015-04-07AI74263ND
2015-04-07AI74264ND
2015-04-07AI74265ND
2015-04-07AI74266ND
2015-07-07AI819241.40 ppb
2015-07-07AI819251.60 ppb
2015-07-07AI819264.00 ppb
2015-07-07AI819274.90 ppb
2015-07-07AI819282.70 ppb
2015-07-07AI819292.30 ppb
2015-07-07AI819301.60 ppb
2015-07-07AI819311.10 ppb
2015-10-06AI923871.10 ppb
2015-10-06AI92388ND
2015-10-06AI923891.50 ppb
2015-10-06AI923901.60 ppb
2015-10-06AI923911.40 ppb
2015-10-06AI923921.70 ppb
2015-10-06AI923931.70 ppb
2015-10-06AI92394ND
2016-01-12AJ04228ND
2016-01-12AJ04229ND
2016-01-12AJ04230ND
2016-01-12AJ04231ND
2016-01-12AJ04232ND
2016-01-12AJ04233ND
2016-01-12AJ04234ND
2016-01-12AJ04235ND
2016-04-13AJ10020ND
2016-04-13AJ10021ND
2016-04-13AJ10022ND
2016-04-13AJ10023ND
2016-04-13AJ10024ND
2016-04-13AJ10025ND
2016-04-13AJ10026ND
2016-04-13AJ10027ND
2016-04-25AJ10826ND
2016-04-25AJ10827ND
2016-07-12AJ17582ND
2016-07-12AJ17583ND
2016-07-12AJ17584ND
2016-07-12AJ17585ND
2016-07-12AJ17586ND
2016-07-12AJ17587ND
2016-07-12AJ17588ND
2016-07-12AJ17589ND
2016-10-12AJ31316ND
2016-10-12AJ31317ND
2016-10-12AJ313181.10 ppb
2016-10-12AJ313191.10 ppb
2016-10-12AJ313201.20 ppb
2016-10-12AJ313211.20 ppb
2016-10-12AJ313221.20 ppb
2016-10-12AJ313231.20 ppb
2017-01-10AJ37983ND
2017-01-10AJ37984ND
2017-01-10AJ37985ND
2017-01-10AJ37986ND
2017-01-10AJ37987ND
2017-01-10AJ37988ND
2017-01-10AJ37989ND
2017-01-10AJ37990ND
2017-04-12AJ53108ND
2017-04-12AJ53109ND
2017-04-12AJ53110ND
2017-04-12AJ53111ND
2017-04-12AJ53112ND
2017-04-12AJ53113ND
2017-04-12AJ53114ND
2017-04-12AJ53115ND
2017-06-13AJ57616ND
2017-07-11AJ60026ND
2017-07-11AJ60027ND
2017-07-11AJ60028ND
2017-07-11AJ60029ND
2017-07-11AJ60030ND
2017-07-11AJ60031ND
2017-07-11AJ60032ND
2017-07-11AJ60033ND
2017-08-07AJ63013ND
2017-10-11AJ71561ND
2017-10-11AJ71562ND
2017-10-11AJ71563ND
2017-10-11AJ71564ND
2017-10-11AJ71565ND
2017-10-11AJ71566ND
2017-10-11AJ71567ND
2017-10-11AJ71568ND
2018-01-09AJ76445ND
2018-01-09AJ76446ND
2018-01-09AJ76447ND
2018-01-09AJ76448ND
2018-01-09AJ76449ND
2018-01-09AJ76450ND
2018-01-09AJ76451ND
2018-01-09AJ76452ND
2018-04-10AJ87268ND
2018-04-10AJ87269ND
2018-04-10AJ87270ND
2018-04-10AJ87271ND
2018-04-10AJ87272ND
2018-04-10AJ87273ND
2018-04-10AJ87274ND
2018-04-10AJ87275ND
2018-05-14AJ89400ND
2018-07-10AJ93828ND
2018-07-10AJ93829ND
2018-07-10AJ93830ND
2018-07-10AJ93831ND
2018-07-10AJ93832ND
2018-07-10AJ93833ND
2018-07-10AJ93834ND
2018-07-10AJ93835ND
2018-10-09AK03658ND
2018-10-09AK03659ND
2018-10-09AK03660ND
2018-10-09AK03661ND
2018-10-09AK03662ND
2018-10-09AK03663ND
2018-10-09AK03664ND
2018-10-09AK03665ND
2019-01-08AK09049ND
2019-01-08AK09050ND
2019-01-08AK09051ND
2019-01-08AK09052ND
2019-01-08AK09053ND
2019-01-08AK09054ND
2019-01-08AK09055ND
2019-01-08AK09056ND
2019-03-11AK13001ND
2019-03-11AK13002ND
2019-04-09AK14974ND
2019-04-09AK14975ND
2019-04-09AK14976ND
2019-04-09AK14977ND
2019-04-09AK14978ND
2019-04-09AK14979ND
2019-04-09AK14980ND
2019-04-09AK14983ND
2019-07-09AK22020ND
2019-07-09AK22021ND
2019-07-09AK22022ND
2019-07-09AK22023ND
2019-07-09AK22024ND
2019-07-09AK22025ND
2019-07-09AK22026ND
2019-07-09AK22027ND
2019-10-07AK34514ND
2019-10-07AK34515ND
2019-10-07AK34516ND
2019-10-07AK34517ND
2019-10-07AK34518ND
2019-10-07AK34519ND
2019-10-07AK34520ND
2019-10-07AK34521ND