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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Harris County Municipal Utility District 144

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.400 ppb21ND - 0.800 ppb
20150.700 ppb41ND - 2.80 ppb
2016ND50ND
2017ND50ND
2018ND50ND
2019ND50ND

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
2014-08-06AC62380ND
2014-08-06AC623160.800 ppb
2015-06-04AC94715ND
2015-06-04AC94601ND
2015-09-23AD081952.80 ppb
2015-12-07AD15655ND
2016-02-01AD21041ND
2016-02-01AD21109ND
2016-06-07AD39548ND
2016-09-27AD51464ND
2016-10-17AD53379ND
2017-01-24AD66424ND
2017-04-18AD79970ND
2017-04-18AD79932ND
2017-07-24AD90277ND
2017-10-17AE01066ND
2018-02-08AE13015ND
2018-02-08AE13051ND
2018-05-08AE25561ND
2018-08-01AE35297ND
2018-10-24AE44468ND
2019-01-28AE51614ND
2019-01-28AE51686ND
2019-04-23AE63376ND
2019-07-30AE76384ND
2019-10-10AE86290ND