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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Sweetwater

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.

 

76

Samples

0

Samples exceeding legal limit (MCL)

59

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20126.15 ppb226.00 ppb - 6.30 ppb
201311.1 ppb662.52 ppb - 29.5 ppb
201412.0 ppb1714ND - 33.9 ppb
20152.37 ppb1711ND - 10.2 ppb
20166.32 ppb17173.13 ppb - 15.0 ppb
20174.16 ppb179ND - 13.6 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
2012-06-26AB939556.00 ppb
2012-09-18AC013126.30 ppb
2013-06-04Q13018330086.97 ppb
2013-09-23Q13081990022.52 ppb
2013-12-18Q131850100811.7 ppb
2013-12-18Q131850100729.5 ppb
2013-12-18Q131850100610.8 ppb
2013-12-18Q13185010055.23 ppb
2014-02-19Q14055680044.87 ppb
2014-02-19Q14055680011.27 ppb
2014-02-19Q14055680021.77 ppb
2014-02-19Q140556800333.9 ppb
2014-05-06Q141472700612.2 ppb
2014-05-06Q141472700522.0 ppb
2014-05-06Q14147270048.00 ppb
2014-05-06Q14147270036.10 ppb
2014-08-28Q144009300226.4 ppb
2014-08-28Q14400930059.02 ppb
2014-08-28Q144009300117.8 ppb
2014-08-28Q144009300333.4 ppb
2014-08-28Q144009300425.4 ppb
2014-11-24Q1457322004ND
2014-11-24Q14573220031.30 ppb
2014-11-24Q1457322002ND
2014-11-24Q1457322001ND
2015-02-11Q15057780061.10 ppb
2015-02-11Q1505778005ND
2015-02-11Q15057780071.30 ppb
2015-02-11Q15057780081.20 ppb
2015-06-17Q1522698004ND
2015-06-17Q1522698003ND
2015-06-17Q1522698002ND
2015-06-17Q1522698001ND
2015-08-04Q15303200052.87 ppb
2015-08-04Q15303200041.06 ppb
2015-08-04Q15303200031.89 ppb
2015-08-04Q15303200027.98 ppb
2015-08-04Q15303200013.32 ppb
2015-11-23Q15463680048.07 ppb
2015-11-23Q154636800310.2 ppb
2015-11-23Q15463680021.32 ppb
2015-11-23Q1546368001ND
2016-02-03Q16046960063.36 ppb
2016-02-03Q16046960058.12 ppb
2016-02-03Q16046960043.37 ppb
2016-02-03Q16046960033.13 ppb
2016-06-21Q16257380038.17 ppb
2016-06-21Q16257380016.01 ppb
2016-06-21Q16257380026.42 ppb
2016-06-21Q16257380046.98 ppb
2016-09-22Q16396290068.34 ppb
2016-09-22Q163962900511.1 ppb
2016-09-22Q16396290045.68 ppb
2016-09-22Q16396290034.24 ppb
2016-09-22Q16396290014.74 ppb
2016-12-13Q165421900315.0 ppb
2016-12-13Q16542190013.71 ppb
2016-12-13Q16542190023.74 ppb
2016-12-13Q16542190045.29 ppb
2017-02-21Q1707286008ND
2017-02-21Q17072860077.20 ppb
2017-02-21Q1707286006ND
2017-02-21Q1707286005ND
2017-05-16Q1719907001ND
2017-05-16Q1719907004ND
2017-05-16Q1719907002ND
2017-05-16Q1719907003ND
2017-09-21Q17458430069.60 ppb
2017-09-21Q17458430059.88 ppb
2017-09-21Q174584300410.00 ppb
2017-09-21Q17458430036.11 ppb
2017-09-21Q17458430012.97 ppb
2017-12-04Q1762012001ND
2017-12-04Q17620120048.95 ppb
2017-12-04Q176201200313.6 ppb
2017-12-04Q17620120022.38 ppb