Bromoform

Oxford City PWS

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	0.854 ppb	11	11	0.610 ppb - 1.29 ppb
2015	0.540 ppb	2	2	0.520 ppb - 0.560 ppb
2016	0.850 ppb	2	2	0.750 ppb - 0.950 ppb
2017	0.930 ppb	3	3	0.610 ppb - 1.19 ppb
2018	1.75 ppb	2	2	1.65 ppb - 1.84 ppb
2019	1.05 ppb	2	2	0.990 ppb - 1.10 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
2014-01-08	14A0206-01	0.750 ppb
2014-01-08	14A0206-02	0.790 ppb
2014-01-08	14A0206-03	0.730 ppb
2014-01-08	14A0206-04	0.890 ppb
2014-01-08	14A0207-02	0.610 ppb
2014-04-08	14D0380-01	0.840 ppb
2014-04-08	14D0380-02	0.850 ppb
2014-04-08	14D0380-03	0.860 ppb
2014-04-08	14D0380-04	1.29 ppb
2014-07-08	14G0377-01	0.890 ppb
2014-07-08	14G0377-02	0.890 ppb
2015-07-06	15G0207-01	0.520 ppb
2015-07-06	15G0207-02	0.560 ppb
2016-07-13	16G0871-01	0.750 ppb
2016-07-13	16G0871-02	0.950 ppb
2017-01-30	17A1421-02	0.610 ppb
2017-07-24	17G1310-01	0.990 ppb
2017-07-24	17G1310-02	1.19 ppb
2018-07-02	18G0020-01	1.65 ppb
2018-07-02	18G0020-02	1.84 ppb
2019-07-29	5219435001	0.990 ppb
2019-07-29	5219435002	1.10 ppb