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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Combine Water Supply Corporation

NOTE: Combine Water Supply Corporation purchases water from City of Seagoville which is required to test for bromoform. Sample information shown below was taken by City of Seagoville.

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.

 

93

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.30 ppb31ND - 3.90 ppb
20132.49 ppb441.80 ppb - 3.60 ppb
20145.15 ppb441.10 ppb - 14.7 ppb
20151.30 ppb42ND - 3.80 ppb
20160.383 ppb41ND - 1.53 ppb
20170.713 ppb41ND - 2.85 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

NOTE: Combine Water Supply Corporation purchases water from City of Seagoville which is required to test for bromoform. Sample information shown below was taken by City of Seagoville.

Date Lab ID Result
2012-02-211202586002ND
2012-05-1612056510041.000 ppb
2012-05-1612056510031.000 ppb
2012-05-161205651002ND
2012-05-161205651001ND
2012-07-311208100004ND
2012-07-311208100001ND
2012-07-311208100002ND
2012-07-311208100003ND
2012-10-301210A29002ND
2012-10-301210A29001ND
2012-10-301210A29003ND
2012-10-301210A29004ND
2013-02-1213024150031.90 ppb
2013-02-1213024150051.80 ppb
2013-02-1213024150041.80 ppb
2013-02-1213024150021.90 ppb
2013-04-161304566001ND
2013-04-161304566002ND
2013-04-161304566003ND
2013-04-161304566004ND
2013-07-30Q1304559006ND
2013-07-30Q1304559005ND
2013-07-30Q1304559008ND
2013-07-30Q1304559007ND
2013-10-28Q13099790082.31 ppb
2013-10-28Q13099790072.78 ppb
2013-10-28Q13099790062.65 ppb
2013-10-28Q13099790052.90 ppb
2014-03-17Q14084640012.00 ppb
2014-03-17Q14084640021.30 ppb
2014-03-17Q14084640031.10 ppb
2014-03-17Q14084640041.10 ppb
2014-05-15Q14165980041.000 ppb
2014-05-15Q1416598002ND
2014-05-15Q1416598003ND
2014-05-15Q1416598001ND
2014-09-02Q14405290011.10 ppb
2014-09-02Q14405290021.30 ppb
2014-09-02Q14405290031.30 ppb
2014-09-02Q14405290041.30 ppb
2014-10-28Q14544380022.10 ppb
2014-10-28Q14544380012.70 ppb
2014-10-28Q14544380052.40 ppb
2014-10-28Q14544380042.10 ppb
2015-01-27Q15031470053.10 ppb
2015-01-27Q15031470042.80 ppb
2015-01-27Q15031470032.80 ppb
2015-01-27Q15031470022.10 ppb
2015-05-26Q1519036004ND
2015-05-26Q1519036003ND
2015-05-26Q1519036002ND
2015-05-26Q1519036001ND
2015-08-12Q1531779001ND
2015-08-12Q1531779002ND
2015-08-12Q1531779003ND
2015-08-12Q1531779004ND
2015-10-21Q1541502001ND
2015-10-21Q1541502002ND
2015-10-21Q1541502003ND
2015-10-21Q1541502004ND
2016-01-20Q1602332004ND
2016-01-20Q1602332003ND
2016-01-20Q1602332002ND
2016-01-20Q1602332001ND
2016-04-06Q1613672001ND
2016-04-06Q1613672002ND
2016-04-06Q1613672003ND
2016-04-06Q1613672004ND
2016-07-13Q1628377004ND
2016-07-13Q1628377003ND
2016-07-13Q1628377002ND
2016-07-13Q1628377001ND
2016-10-17Q1643890001ND
2016-10-17Q1643890003ND
2016-10-17Q1643890004ND
2016-10-17Q1643890002ND
2017-01-18Q1702349001ND
2017-01-18Q1702349005ND
2017-01-18Q1702349002ND
2017-01-18Q1702349004ND
2017-04-24Q1716526002ND
2017-04-24Q1716526004ND
2017-04-24Q1716526001ND
2017-04-24Q1716526003ND
2017-07-26Q1731045003ND
2017-07-26Q1731045004ND
2017-07-26Q1731045002ND
2017-07-26Q1731045001ND
2017-10-25Q1755288002ND
2017-10-25Q17552880041.18 ppb
2017-10-25Q17552880031.08 ppb
2017-10-25Q1755288001ND