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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

University of Connecticut - Main Campus

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

 

130

Samples

0

Samples exceeding legal limit (MCL)

102

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.617 ppb1914ND - 1.50 ppb
20150.745 ppb1914ND - 1.90 ppb
20160.976 ppb1816ND - 2.30 ppb
20170.780 ppb2220ND - 1.80 ppb
20180.804 ppb2617ND - 3.50 ppb
20191.03 ppb2622ND - 3.20 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
2014-03-10BG17096TTHMND
2014-03-10BG17099TTHM0.800 ppb
2014-03-10BG17101TTHMND
2014-03-10BG17102TTHM0.530 ppb
2014-04-24BG36616VOC1ND
2014-04-24BG36617VOC1ND
2014-06-12BG56337TTHM0.690 ppb
2014-06-12BG56340TTHM0.930 ppb
2014-06-12BG56345TTHM0.760 ppb
2014-06-12BG56346TTHM0.990 ppb
2014-06-27BG66061VOC1ND
2014-09-16BH14164TTHM0.910 ppb
2014-09-16BH14167TTHM1.50 ppb
2014-09-16BH14172TTHM0.790 ppb
2014-09-16BH14173TTHM0.810 ppb
2014-12-10BH51407TTHM0.750 ppb
2014-12-10BH51410TTHM0.870 ppb
2014-12-10BH51415TTHM0.660 ppb
2014-12-10BH51416TTHM0.730 ppb
2015-01-22BH66096VOC1ND
2015-01-22BH66098VOC1ND
2015-01-22BH66097VOC1ND
2015-03-09BH80470TTHMND
2015-03-09BH80473TTHM0.760 ppb
2015-03-12BH82672TTHM0.510 ppb
2015-03-12BH82671TTHMND
2015-06-08BJ27393TTHM1.20 ppb
2015-06-08BJ27390TTHM0.830 ppb
2015-06-08BJ27398TTHM0.780 ppb
2015-06-08BJ27397TTHM0.980 ppb
2015-09-22BJ95540TTHM1.90 ppb
2015-09-22BJ95539TTHM1.10 ppb
2015-09-22BJ95542TTHM1.000 ppb
2015-09-22BJ95541TTHM1.10 ppb
2015-12-09BK34680TTHM0.960 ppb
2015-12-09BK34675TTHM0.820 ppb
2015-12-09BK34679TTHM0.810 ppb
2015-12-09BK34678TTHM1.40 ppb
2016-03-09BK75989TTHM1.10 ppb
2016-03-09BK75990TTHM1.20 ppb
2016-03-09BK75991TTHM1.10 ppb
2016-03-09BK75992TTHM1.50 ppb
2016-06-09BN51405TTHM0.520 ppb
2016-06-09BN51408TTHM1.000 ppb
2016-06-09BN51412TTHM0.690 ppb
2016-06-09BN51413TTHM0.590 ppb
2016-06-14BN54228VOC1ND
2016-06-14BN54227VOC1ND
2016-09-21BV20288TTHM1.000 ppb
2016-09-21BV20289TTHM0.970 ppb
2016-09-21BV20290TTHM0.850 ppb
2016-09-21BV20291TTHM2.30 ppb
2016-12-13BX04254TTHM1.10 ppb
2016-12-13BX04255TTHM0.930 ppb
2016-12-13BX04256TTHM0.710 ppb
2016-12-13BX04257TTHM2.00 ppb
2017-03-08BX81804TTHM0.850 ppb
2017-03-08BX81805TTHM0.940 ppb
2017-03-08BX81806TTHM0.530 ppb
2017-03-08BX81807TTHM1.40 ppb
2017-06-13BY38124TTHM0.510 ppb
2017-06-13BY38125TTHM0.830 ppb
2017-06-13BY38126TTHM0.570 ppb
2017-06-13BY38127TTHM1.10 ppb
2017-08-09BY81246TTHM0.900 ppb
2017-08-09BY81247TTHM0.650 ppb
2017-08-09BY81248TTHM0.920 ppb
2017-08-10BY82233TTHM0.990 ppb
2017-09-05BY94975TTHM0.900 ppb
2017-09-05BY94976TTHM0.760 ppb
2017-09-06BY95732TTHM0.850 ppb
2017-09-07BY96696TTHM0.820 ppb
2017-12-11BZ54499VOC1ND
2017-12-11BZ54498VOC1ND
2017-12-12BZ58240TTHM0.610 ppb
2017-12-12BZ58241TTHM0.570 ppb
2017-12-12BZ58242TTHM0.650 ppb
2017-12-12BZ58243TTHM1.80 ppb
2018-03-15CA02987TTHMND
2018-03-15CA02988TTHM0.540 ppb
2018-03-15CA02989TTHMND
2018-03-15CA02990TTHM1.20 ppb
2018-06-12CA68568TTHM0.660 ppb
2018-06-12CA68569TTHM0.680 ppb
2018-06-12CA68570TTHM0.630 ppb
2018-06-12CA68571TTHM1.10 ppb
2018-09-19DBP 2005061820.900 ppb
2018-09-19DBP 2005061840.800 ppb
2018-09-19DBP 2005061863.50 ppb
2018-09-19DBP 2005061891.000 ppb
2018-09-25DBP 200506720ND
2018-09-25DBP 200506721ND
2018-09-25DBP 200506722ND
2018-09-25DBP 200506723ND
2018-09-26DBP 2005069661.90 ppb
2018-09-27DBP 2005070731.000 ppb
2018-12-04DBP 2005147240.600 ppb
2018-12-04DBP 200514725ND
2018-12-04DBP 2005147262.70 ppb
2018-12-04DBP 2005147280.600 ppb
2018-12-12VOC1 200515892ND
2018-12-12VOC1 200515895ND
2018-12-17DBP 2005162810.800 ppb
2018-12-17DBP 2005162822.30 ppb
2019-03-18DBP 2005250240.700 ppb
2019-03-18DBP 2005250260.600 ppb
2019-03-18DBP 2005250291.80 ppb
2019-03-18DBP 2005250310.500 ppb
2019-03-18DBP 2005250330.700 ppb
2019-03-18DBP 2005250341.20 ppb
2019-06-24DBP 2005375412.20 ppb
2019-06-24DBP 2005375420.700 ppb
2019-06-24DBP 2005375431.40 ppb
2019-06-25DBP 2005378060.600 ppb
2019-06-25DBP 2005378070.700 ppb
2019-06-25DBP 200537808ND
2019-09-16DBP 2005490010.900 ppb
2019-09-16DBP 2005490021.000 ppb
2019-09-16DBP 2005490403.20 ppb
2019-09-16DBP 2005490410.800 ppb
2019-09-16DBP 2005490431.10 ppb
2019-09-16DBP 2005490442.20 ppb
2019-11-21VOC1 200557816ND
2019-11-21VOC1 200557817ND
2019-12-09DBP 2005594120.600 ppb
2019-12-09DBP 2005594160.600 ppb
2019-12-09DBP 2005594192.40 ppb
2019-12-09DBP 200559422ND
2019-12-09DBP 2005594250.700 ppb
2019-12-09DBP 2005594272.20 ppb