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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Glenn Heights

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

 

97

Samples

0

Samples exceeding legal limit (MCL)

41

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.70 ppb1613ND - 3.10 ppb
20150.869 ppb175ND - 5.17 ppb
2016ND160ND
20170.296 ppb164ND - 1.32 ppb
20181.11 ppb1611ND - 2.18 ppb
20190.718 ppb168ND - 1.70 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
2014-02-24Q14058540042.36 ppb
2014-02-24Q14058540032.81 ppb
2014-02-24Q14058540022.60 ppb
2014-02-24Q14058540012.75 ppb
2014-05-15Q14166010041.60 ppb
2014-05-15Q14166010031.80 ppb
2014-05-15Q14166010021.60 ppb
2014-05-15Q14166010011.80 ppb
2014-07-10Q1427174009ND
2014-07-10Q14271740081.000 ppb
2014-07-10Q1427174010ND
2014-07-10Q1427174011ND
2014-11-05Q14548580043.10 ppb
2014-11-05Q14548580031.90 ppb
2014-11-05Q14548580021.80 ppb
2014-11-05Q14548580012.10 ppb
2015-01-27Q15031500093.00 ppb
2015-01-27Q15031500082.30 ppb
2015-01-27Q15031500072.00 ppb
2015-01-27Q15031500062.30 ppb
2015-01-27Q15031500015.17 ppb
2015-06-04Q1520626002ND
2015-06-04Q1520626001ND
2015-06-04Q1520626003ND
2015-06-04Q1520626004ND
2015-08-12Q1531783004ND
2015-08-12Q1531783003ND
2015-08-12Q1531783002ND
2015-08-12Q1531783001ND
2015-10-21Q1541506004ND
2015-10-21Q1541506003ND
2015-10-21Q1541506002ND
2015-10-21Q1541506001ND
2016-01-21Q1602703003ND
2016-01-21Q1602703001ND
2016-01-21Q1602703002ND
2016-01-21Q1602703004ND
2016-04-12Q1614274004ND
2016-04-12Q1614274003ND
2016-04-12Q1614274002ND
2016-04-12Q1614274001ND
2016-07-13Q1628380002ND
2016-07-13Q1628380001ND
2016-07-13Q1628380004ND
2016-07-13Q1628380003ND
2016-10-10Q1642689003ND
2016-10-10Q1642689004ND
2016-10-10Q1642689005ND
2016-10-10Q1642689002ND
2017-01-11Q1701423002ND
2017-01-11Q1701423005ND
2017-01-11Q1701423001ND
2017-01-11Q1701423004ND
2017-04-10Q1714473004ND
2017-04-10Q1714473003ND
2017-04-10Q1714473002ND
2017-04-10Q1714473001ND
2017-07-06Q1727616001ND
2017-07-06Q1727616003ND
2017-07-06Q17276160041.03 ppb
2017-07-06Q1727616002ND
2017-10-12Q17522920041.22 ppb
2017-10-12Q17522920021.32 ppb
2017-10-12Q17522920031.16 ppb
2017-10-12Q1752292001ND
2018-01-31Q18036840021.78 ppb
2018-01-31Q18036840042.16 ppb
2018-01-31Q18036840011.75 ppb
2018-01-31Q18036840032.18 ppb
2018-04-25Q18168650031.62 ppb
2018-04-25Q18168650011.38 ppb
2018-04-25Q18168650021.69 ppb
2018-04-25Q18168650041.76 ppb
2018-07-24Q1829299005ND
2018-07-24Q18292990021.14 ppb
2018-07-24Q18292990041.09 ppb
2018-07-24Q18292990011.17 ppb
2018-10-17Q1841470002ND
2018-10-17Q1841470004ND
2018-10-17Q1841470001ND
2018-10-17Q1841470003ND
2019-01-16Q1902365002ND
2019-01-16Q1902365004ND
2019-01-16Q1902365005ND
2019-01-16Q1902365003ND
2019-04-15Q19150200041.31 ppb
2019-04-15Q19150200031.50 ppb
2019-04-15Q19150200021.16 ppb
2019-04-15Q19150200011.35 ppb
2019-08-20Q1956752004ND
2019-08-20Q1956752003ND
2019-08-20Q1956752002ND
2019-08-20Q1956752001ND
2019-10-31Q19746530011.70 ppb
2019-10-31Q19746530041.40 ppb
2019-10-31Q19746530031.62 ppb
2019-10-31Q19746530021.45 ppb