Bromoform

City of Shoreacres

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	4	0	ND
2015	ND	5	0	ND
2016	ND	5	0	ND
2017	ND	5	0	ND
2018	1.32 ppb	5	1	ND - 6.60 ppb
2019	ND	5	0	ND

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
2014-02-18	AC43343	ND
2014-04-04	AC49445	ND
2014-07-14	AC59501	ND
2014-11-17	AC72235	ND
2015-01-20	AC76753	ND
2015-05-19	AC92563	ND
2015-05-19	AC92587	ND
2015-07-20	AD00161	ND
2015-11-13	AD13629	ND
2016-01-13	AD17873	ND
2016-01-13	AD17887	ND
2016-04-05	AD31826	ND
2016-07-07	AD43324	ND
2016-10-04	AD52473	ND
2017-01-24	AD66426	ND
2017-01-24	AD66462	ND
2017-05-18	AD84870	ND
2017-07-17	AD89494	ND
2017-11-20	AE05400	ND
2018-02-14	AE13755	ND
2018-05-30	AE28034	6.60 ppb
2018-05-30	AE28059	ND
2018-07-16	AE33362	ND
2018-10-18	AE43944	ND
2019-03-01	AE56874	ND
2019-03-01	AE56903	ND
2019-04-10	AE61809	ND
2019-07-24	AE75779	ND
2019-10-21	AE87056	ND