Bromoform

Goldonna 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	ND	4	0	ND
2015	ND	4	0	ND
2016	0.835 ppb	4	4	0.820 ppb - 0.850 ppb
2017	ND	4	0	ND
2018	ND	4	0	ND
2019	2.35 ppb	4	4	2.10 ppb - 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
2014-08-18	1327527	ND
2014-08-18	1327526	ND
2014-08-18	1327527	ND
2014-08-18	1327526	ND
2015-08-17	1420002	ND
2015-08-17	1420002	ND
2015-08-17	1420003	ND
2015-08-17	1420003	ND
2016-08-15	1516446	0.820 ppb
2016-08-15	1516447	0.850 ppb
2016-08-15	1516447	0.850 ppb
2016-08-15	1516446	0.820 ppb
2017-08-03	35328362048	ND
2017-08-03	35328362048	ND
2017-08-03	35328362047	ND
2017-08-03	35328362047	ND
2018-08-27	35414236002	ND
2018-08-27	35414236001	ND
2018-08-27	35414236001	ND
2018-08-27	35414236002	ND
2019-08-26	35494510001	2.60 ppb
2019-08-26	35494510002	2.10 ppb
2019-08-26	35494510001	2.60 ppb
2019-08-26	35494510002	2.10 ppb