Bromoform

City of Federal 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

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	N/A	0	0	N/A
2015	0.180 ppb	6	2	ND - 0.540 ppb
2016	0.357 ppb	9	4	ND - 1.000 ppb
2017	0.414 ppb	8	4	ND - 1.000 ppb
2018	0.511 ppb	8	6	ND - 0.770 ppb
2019	0.736 ppb	9	5	ND - 1.90 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	Result
2015-06-10	ND
2015-06-10	ND
2015-09-10	0.540 ppb
2015-09-10	0.540 ppb
2015-12-08	ND
2015-12-08	ND
2016-03-03	0.600 ppb
2016-03-03	0.640 ppb
2016-03-15	ND
2016-06-14	0.970 ppb
2016-06-14	1.000 ppb
2016-09-14	ND
2016-09-14	ND
2016-12-06	ND
2016-12-06	ND
2017-03-15	ND
2017-03-15	ND
2017-06-14	1.000 ppb
2017-06-14	0.970 ppb
2017-09-13	ND
2017-09-13	ND
2017-12-12	0.650 ppb
2017-12-12	0.690 ppb
2018-03-13	ND
2018-03-13	ND
2018-06-26	0.720 ppb
2018-06-26	0.730 ppb
2018-09-17	0.770 ppb
2018-09-17	0.760 ppb
2018-12-10	0.540 ppb
2018-12-10	0.570 ppb
2019-03-18	1.000 ppb
2019-03-18	1.10 ppb
2019-06-12	1.80 ppb
2019-06-12	1.90 ppb
2019-09-03	0.820 ppb
2019-09-03	ND
2019-09-04	ND
2019-12-16	ND
2019-12-16	ND