Bromoform

Village of Briarcliff

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	2.76 ppb	5	5	2.30 ppb - 3.40 ppb
2015	1.14 ppb	5	2	ND - 2.90 ppb
2016	0.220 ppb	5	1	ND - 1.10 ppb
2017	1.26 ppb	5	3	ND - 2.40 ppb
2018	1.88 ppb	5	4	ND - 2.80 ppb
2019	1.46 ppb	5	3	ND - 2.60 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
2014-03-19	AC47576	3.00 ppb
2014-06-16	AC56875	2.30 ppb
2014-08-20	AC64592	2.50 ppb
2014-08-20	AC64629	3.40 ppb
2014-11-19	AC72478	2.60 ppb
2015-03-16	AC84404	2.80 ppb
2015-05-19	AC92556	2.90 ppb
2015-09-10	AD06535	ND
2015-09-10	AD06620	ND
2015-12-02	AD15164	ND
2016-02-17	AD23905	ND
2016-05-17	AD37042	ND
2016-07-28	AD46165	ND
2016-07-28	AD46218	ND
2016-11-08	AD57088	1.10 ppb
2017-01-31	AD67836	ND
2017-04-27	AD81504	ND
2017-08-15	AD93083	2.40 ppb
2017-08-15	AD93090	1.60 ppb
2017-11-08	AE04060	2.30 ppb
2018-01-30	AE11230	1.90 ppb
2018-05-01	AE24568	2.50 ppb
2018-07-16	AE33363	2.80 ppb
2018-07-23	AE34159	2.20 ppb
2018-11-20	AE46658	ND
2019-01-24	AE51239	ND
2019-05-02	AE64629	ND
2019-08-26	AE80584	2.20 ppb
2019-09-11	AE83039	2.50 ppb
2019-11-18	AE89538	2.60 ppb