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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Hosanna 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

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015N/A00N/A
2016ND50ND
2017ND90ND
2018ND70ND
2019ND30ND

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
2014-03-1814079005509ND
2014-06-1714170002102ND
2014-06-1714170002202ND
2016-08-1616230002801ND
2016-08-2216237004002ND
2016-08-2216237003902ND
2016-11-0116308005502ND
2016-12-1516350000202ND
2017-02-2117053001202ND
2017-02-2117053001102ND
2017-05-2317144003502ND
2017-05-2317144003402ND
2017-07-1817200000601ND
2017-08-0717222013702ND
2017-08-0717222013802ND
2017-11-2717334000402ND
2017-11-2717334000202ND
2018-02-2018053005802ND
2018-02-2018053005902ND
2018-05-2918151002002ND
2018-05-2918151001902ND
2018-08-2718241000402ND
2018-08-2718241000201ND
2018-08-2718241000302ND
2019-07-0219184000501ND
2019-07-0219184000401ND
2019-09-0419248004501ND