Bromoform

Fordyce, Village of

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	0.173 ppb	4	1	ND - 0.690 ppb
2015	0.134 ppb	4	1	ND - 0.534 ppb
2016	0.758 ppb	4	2	ND - 1.87 ppb
2017	1.01 ppb	4	4	0.532 ppb - 1.46 ppb
2018	0.948 ppb	4	4	0.641 ppb - 1.28 ppb
2019	0.500 ppb	4	3	ND - 0.740 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
2014-01-13	283339	ND
2014-04-14	295201	ND
2014-07-14	312015	0.690 ppb
2014-10-14	330715	ND
2015-01-12	344909	ND
2015-04-13	357676	ND
2015-07-15	374567	ND
2015-10-13	393538	0.534 ppb
2016-01-11		ND
2016-04-12		ND
2016-07-11		1.16 ppb
2016-10-10		1.87 ppb
2017-01-09		0.532 ppb
2017-04-10		0.627 ppb
2017-07-11		1.46 ppb
2017-10-10		1.43 ppb
2018-01-09	532459	0.650 ppb
2018-04-09	543849	0.641 ppb
2018-07-11	562093	1.28 ppb
2018-10-09	578366	1.22 ppb
2019-01-15	590654	0.650 ppb
2019-04-09	600593	ND
2019-07-08	622477	0.740 ppb
2019-10-15	638265	0.610 ppb