Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Town of Little Elm

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

 

93

Samples

0

Samples exceeding legal limit (MCL)

74

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.54 ppb13131.60 ppb - 7.90 ppb
20152.79 ppb168ND - 7.50 ppb
20160.414 ppb165ND - 1.52 ppb
20174.34 ppb16162.57 ppb - 7.34 ppb
20182.36 ppb16161.25 ppb - 3.59 ppb
20192.00 ppb16161.10 ppb - 3.26 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
2014-02-11Q14040490012.00 ppb
2014-04-09Q14112880041.80 ppb
2014-04-09Q14112880031.70 ppb
2014-04-09Q14112880027.90 ppb
2014-04-09Q14112880011.60 ppb
2014-07-11Q14281430043.50 ppb
2014-07-11Q14281430033.90 ppb
2014-07-11Q14281430023.80 ppb
2014-07-11Q14281430014.10 ppb
2014-11-12Q14556820053.90 ppb
2014-11-12Q14556820043.40 ppb
2014-11-12Q14556820024.40 ppb
2014-11-12Q14556820034.00 ppb
2015-02-19Q15067860047.50 ppb
2015-02-19Q15067860037.30 ppb
2015-02-19Q15067860027.30 ppb
2015-02-19Q15067860016.80 ppb
2015-05-01Q15162270044.06 ppb
2015-05-01Q15162270034.00 ppb
2015-05-01Q15162270023.82 ppb
2015-05-01Q15162270013.83 ppb
2015-07-31Q1529989002ND
2015-07-31Q1529989001ND
2015-07-31Q1529989003ND
2015-07-31Q1529989004ND
2015-10-15Q1540523004ND
2015-10-15Q1540523003ND
2015-10-15Q1540523002ND
2015-10-15Q1540523001ND
2016-02-02Q1604385004ND
2016-02-02Q16043850031.04 ppb
2016-02-02Q1604385002ND
2016-02-02Q1604385001ND
2016-04-19Q16153350031.38 ppb
2016-04-19Q16153350011.52 ppb
2016-04-19Q16153350021.24 ppb
2016-04-19Q16153350041.45 ppb
2016-08-02Q1631797004ND
2016-08-02Q1631797003ND
2016-08-02Q1631797002ND
2016-08-02Q1631797001ND
2016-10-18Q1644224002ND
2016-10-18Q1644224004ND
2016-10-18Q1644224001ND
2016-10-18Q1644224003ND
2017-01-26Q17036960033.09 ppb
2017-01-26Q17036960042.98 ppb
2017-01-26Q17036960022.91 ppb
2017-01-26Q17036960013.08 ppb
2017-05-01Q17176130046.94 ppb
2017-05-01Q17176130037.02 ppb
2017-05-01Q17176130027.34 ppb
2017-05-01Q17176130017.03 ppb
2017-07-26Q17308630023.20 ppb
2017-07-26Q17308630034.78 ppb
2017-07-26Q17308630014.48 ppb
2017-07-26Q17308630044.35 ppb
2017-10-31Q17560240022.98 ppb
2017-10-31Q17560240013.27 ppb
2017-10-31Q17560240033.45 ppb
2017-10-31Q17560240042.57 ppb
2018-01-29Q18035070022.83 ppb
2018-01-29Q18035070042.35 ppb
2018-01-29Q18035070012.95 ppb
2018-01-29Q18035070033.59 ppb
2018-05-07Q18182370031.25 ppb
2018-05-07Q18182370022.58 ppb
2018-05-07Q18182370042.35 ppb
2018-05-07Q18182370012.83 ppb
2018-08-07Q18313000052.50 ppb
2018-08-07Q18313000022.09 ppb
2018-08-07Q18313000032.33 ppb
2018-08-07Q18313000042.56 ppb
2018-10-24Q18430100042.00 ppb
2018-10-24Q18430100032.05 ppb
2018-10-24Q18430100021.98 ppb
2018-10-24Q18430100011.50 ppb
2019-01-24Q19037020011.10 ppb
2019-01-24Q19037020031.12 ppb
2019-01-24Q19037020041.26 ppb
2019-01-24Q19037020021.23 ppb
2019-05-13Q19239330042.49 ppb
2019-05-13Q19239330033.18 ppb
2019-05-13Q19239330022.97 ppb
2019-05-13Q19239330013.26 ppb
2019-08-22Q19583400021.41 ppb
2019-08-22Q19583400011.50 ppb
2019-08-22Q19583400041.38 ppb
2019-08-22Q19583400031.33 ppb
2019-10-16Q19729510032.40 ppb
2019-10-16Q19729510042.38 ppb
2019-10-16Q19729510052.71 ppb
2019-10-16Q19729510022.33 ppb