Bromoform

Town Of Boyce Water System

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	1.20 ppb	4	2	ND - 2.40 ppb
2015	0.525 ppb	8	4	ND - 1.05 ppb
2016	ND	4	0	ND
2017	0.885 ppb	4	4	0.670 ppb - 1.10 ppb
2018	ND	4	0	ND
2019	ND	4	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
2014-08-18	35151014002	ND
2014-08-18	35151014001	2.40 ppb
2014-08-18	35151014002	ND
2014-08-18	35151014001	2.40 ppb
2015-01-05	AE00807	ND
2015-01-05	AE00807	ND
2015-01-05	AE00808	ND
2015-01-05	AE00808	ND
2015-08-17	35202949001	1.05 ppb
2015-08-17	35202949002	1.05 ppb
2015-08-17	35202949002	1.05 ppb
2015-08-17	35202949001	1.05 ppb
2016-08-17	35260817001	ND
2016-08-17	35260817002	ND
2016-08-17	35260817002	ND
2016-08-17	35260817001	ND
2017-08-03	35328340002	1.10 ppb
2017-08-03	35328340002	1.10 ppb
2017-08-03	35328340001	0.670 ppb
2017-08-03	35328340001	0.670 ppb
2018-08-14	35411226002	ND
2018-08-14	35411226001	ND
2018-08-14	35411226001	ND
2018-08-14	35411226002	ND
2019-08-01	35486804001	ND
2019-08-01	35486804002	ND
2019-08-01	35486804001	ND
2019-08-01	35486804002	ND