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EWG's Tap Water Database — 2019 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.

 

204

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.409 ppb308ND - 1.80 ppb
20130.0477 ppb352ND - 0.930 ppb
2014ND370ND
20150.841 ppb3414ND - 4.90 ppb
20160.206 ppb346ND - 1.20 ppb
2017ND340ND

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
2012-02-06AH52620ND
2012-02-06AH52621ND
2012-02-06AH52622ND
2012-02-06AH52623ND
2012-04-09AH56315ND
2012-04-09AH56316ND
2012-04-09AH56317ND
2012-04-09AH56318ND
2012-04-09AH56319ND
2012-04-09AH56320ND
2012-04-09AH56321ND
2012-04-09AH56322ND
2012-05-01AH57752ND
2012-07-10AH69586ND
2012-07-10AH69587ND
2012-07-10AH69588ND
2012-07-10AH69589ND
2012-07-10AH69590ND
2012-07-10AH69591ND
2012-07-10AH69592ND
2012-07-10AH69593ND
2012-10-10AH81541ND
2012-10-10AH815421.70 ppb
2012-10-10AH815431.60 ppb
2012-10-10AH815441.70 ppb
2012-10-10AH815451.80 ppb
2012-10-10AH815461.80 ppb
2012-10-10AH815471.60 ppb
2012-10-10AH815481.20 ppb
2012-11-05AH832570.860 ppb
2013-01-08AH87125ND
2013-01-08AH87126ND
2013-01-08AH87127ND
2013-01-08AH87128ND
2013-01-08AH87129ND
2013-01-08AH87130ND
2013-01-08AH87131ND
2013-01-08AH87132ND
2013-02-05AH884510.930 ppb
2013-02-05AH884520.740 ppb
2013-04-08AH98641ND
2013-04-08AH98642ND
2013-04-08AH98643ND
2013-04-08AH98644ND
2013-04-08AH98645ND
2013-04-08AH98646ND
2013-04-08AH98647ND
2013-04-08AH98648ND
2013-07-09AI05826ND
2013-07-09AI05827ND
2013-07-09AI05828ND
2013-07-09AI05829ND
2013-07-09AI05830ND
2013-07-09AI05831ND
2013-07-09AI05832ND
2013-07-09AI05833ND
2013-10-02AI19612ND
2013-10-08AI20212ND
2013-10-08AI20213ND
2013-10-08AI20214ND
2013-10-08AI20215ND
2013-10-08AI20216ND
2013-10-08AI20217ND
2013-10-08AI20218ND
2013-10-08AI20219ND
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