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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Galveston County WCID 1

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.

 

118

Samples

0

Samples exceeding legal limit (MCL)

111

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20128.76 ppb20201.000 ppb - 17.0 ppb
201314.7 ppb19193.70 ppb - 29.8 ppb
20145.59 ppb19192.30 ppb - 11.5 ppb
20153.94 ppb1915ND - 11.0 ppb
20163.76 ppb2118ND - 11.0 ppb
20175.72 ppb20202.60 ppb - 11.0 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
2012-02-01AB7974815.3 ppb
2012-02-01AB7974914.6 ppb
2012-02-01AB7975017.0 ppb
2012-02-01AB7975112.9 ppb
2012-04-05AB862311.40 ppb
2012-04-05AB861741.20 ppb
2012-04-05AB861631.30 ppb
2012-04-05AB861641.000 ppb
2012-06-01AB915926.60 ppb
2012-06-01AB915836.10 ppb
2012-06-01AB915826.20 ppb
2012-06-01AB915976.00 ppb
2012-08-23AB995046.50 ppb
2012-08-23AB995016.70 ppb
2012-08-23AB995027.30 ppb
2012-08-23AB995037.30 ppb
2012-11-27AC0564616.4 ppb
2012-11-27AC0563713.4 ppb
2012-11-27AC0564515.2 ppb
2012-11-27AC0563612.7 ppb
2013-02-05AC0970825.0 ppb
2013-02-05AC0970616.0 ppb
2013-02-05AC0971019.0 ppb
2013-02-05AC0966213.4 ppb
2013-02-05AC0965711.1 ppb
2013-02-05AC0965814.3 ppb
2013-02-05AC0966112.0 ppb
2013-05-29AC2071712.2 ppb
2013-05-29AC207299.00 ppb
2013-05-29AC2072713.6 ppb
2013-05-29AC207188.60 ppb
2013-08-15AC2789824.9 ppb
2013-08-15AC2790527.5 ppb
2013-08-15AC2789623.7 ppb
2013-08-15AC2790129.8 ppb
2013-11-18AC353848.10 ppb
2013-11-18AC353714.10 ppb
2013-11-18AC353693.70 ppb
2013-11-18AC353824.10 ppb
2014-02-21AC442252.90 ppb
2014-02-21AC442273.00 ppb
2014-02-21AC442302.70 ppb
2014-02-21AC442262.80 ppb
2014-06-03AC5587611.5 ppb
2014-06-03AC558778.70 ppb
2014-06-03AC558789.30 ppb
2014-06-03AC5587211.2 ppb
2014-06-03AC558054.80 ppb
2014-06-03AC558113.70 ppb
2014-06-03AC558132.30 ppb
2014-07-30AC616082.70 ppb
2014-07-30AC616142.90 ppb
2014-07-30AC616173.70 ppb
2014-07-30AC616153.50 ppb
2014-10-22AC703027.60 ppb
2014-10-22AC703017.30 ppb
2014-10-22AC703048.20 ppb
2014-10-22AC703037.40 ppb
2015-01-15AC764623.10 ppb
2015-01-15AC7646611.0 ppb
2015-01-15AC7645611.0 ppb
2015-01-15AC764271.60 ppb
2015-01-15AC764281.000 ppb
2015-01-15AC764221.000 ppb
2015-01-15AC764211.10 ppb
2015-05-06AC90707ND
2015-05-06AC90747ND
2015-05-06AC90745ND
2015-05-06AC90752ND
2015-07-07AC985331.80 ppb
2015-07-07AC985371.60 ppb
2015-07-07AC985341.70 ppb
2015-07-07AC985361.50 ppb
2015-10-28AD119839.70 ppb
2015-10-28AD119849.60 ppb
2015-10-28AD119829.90 ppb
2015-10-28AD119819.30 ppb
2016-01-26AD200844.70 ppb
2016-01-26AD200903.50 ppb
2016-01-26AD20041ND
2016-01-26AD200331.30 ppb
2016-01-26AD200281.30 ppb
2016-01-26AD200291.30 ppb
2016-05-16AD367522.80 ppb
2016-05-16AD367812.90 ppb
2016-05-16AD367803.60 ppb
2016-05-16AD367563.00 ppb
2016-06-27AD41911ND
2016-09-29AD518734.10 ppb
2016-09-29AD518724.20 ppb
2016-09-29AD518803.80 ppb
2016-09-29AD518744.20 ppb
2016-09-29AD52074ND
2016-11-29AD593357.20 ppb
2016-11-29AD593385.40 ppb
2016-11-29AD593427.30 ppb
2016-11-29AD593407.30 ppb
2016-11-29AD5938511.0 ppb
2017-01-26AD6720111.0 ppb
2017-01-26AD671774.10 ppb
2017-01-26AD671854.70 ppb
2017-01-26AD671314.90 ppb
2017-01-26AD671303.50 ppb
2017-01-26AD671324.50 ppb
2017-01-26AD671385.60 ppb
2017-04-25AD812076.00 ppb
2017-04-25AD811266.40 ppb
2017-04-25AD811246.50 ppb
2017-04-25AD811508.30 ppb
2017-04-25AD811306.40 ppb
2017-07-24AD903368.10 ppb
2017-07-24AD902837.80 ppb
2017-07-24AD902878.40 ppb
2017-07-24AD902867.30 ppb
2017-10-16AE008102.70 ppb
2017-10-16AE008112.70 ppb
2017-10-16AE008122.80 ppb
2017-10-16AE008132.60 ppb