Bromodichloromethane

G & R Mobile Home Park Water System

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

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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	6.17 ppb	6	4	ND - 9.30 ppb
2015	0.860 ppb	4	4	0.520 ppb - 1.20 ppb
2016	1.05 ppb	4	4	0.900 ppb - 1.20 ppb
2017	ND	4	0	ND
2018	ND	4	0	ND
2019	0.435 ppb	4	4	0.400 ppb - 0.470 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-08-12	L0046560-02	9.30 ppb
2014-08-12	L0046560-01	9.20 ppb
2014-08-12	L0046560-02	9.30 ppb
2014-08-12	L0046560-01	9.20 ppb
2014-09-15	AD96931	ND
2014-09-15	AD96931	ND
2015-08-18	LA10446-2	0.520 ppb
2015-08-18	LA10446-1	1.20 ppb
2015-08-18	LA10446-2	0.520 ppb
2015-08-18	LA10446-1	1.20 ppb
2016-08-24	LA24488-1	0.900 ppb
2016-08-24	LA24488-2	1.20 ppb
2016-08-24	LA24488-2	1.20 ppb
2016-08-24	LA24488-1	0.900 ppb
2017-08-08	35329388002	ND
2017-08-08	35329388002	ND
2017-08-08	35329388001	ND
2017-08-08	35329388001	ND
2018-08-15	35412022002	ND
2018-08-15	35412022001	ND
2018-08-15	35412022001	ND
2018-08-15	35412022002	ND
2019-08-08	35489003001	0.470 ppb
2019-08-08	35489003002	0.400 ppb
2019-08-08	35489003001	0.470 ppb
2019-08-08	35489003002	0.400 ppb