Bromoform

Lacey Twp MUA

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	0.163 ppb	15	4	ND - 0.630 ppb
2015	ND	16	0	ND
2016	0.170 ppb	16	4	ND - 0.860 ppb
2017	0.514 ppb	16	11	ND - 1.09 ppb
2018	0.413 ppb	16	15	ND - 1.23 ppb
2019	0.0381 ppb	16	1	ND - 0.610 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
2014-01-07	P14-0044-01	ND
2014-01-07	P14-0044-03	ND
2014-01-07	P14-0044-04	ND
2014-01-07	P14-0044-02	ND
2014-04-08	P14-0826-03	ND
2014-04-08	P14-0826-04	ND
2014-04-08	P14-0826-01	ND
2014-07-08	P14-2172-03	ND
2014-07-08	P14-2172-04	ND
2014-07-08	P14-2172-02	ND
2014-07-08	P14-2172-01	ND
2014-10-06	P14-3814-02	0.580 ppb
2014-10-06	P14-3814-03	0.630 ppb
2014-10-06	P14-3814-04	0.630 ppb
2014-10-06	P14-3814-01	0.610 ppb
2015-01-05	P15-0027-04	ND
2015-01-05	P15-0027-02	ND
2015-01-05	P15-0027-03	ND
2015-01-05	P15-0027-01	ND
2015-04-01	P15-1121-01	ND
2015-04-01	P15-1121-03	ND
2015-04-01	P15-1121-02	ND
2015-04-01	P15-1121-04	ND
2015-07-02	P15-3057-01	ND
2015-07-02	P15-3057-03	ND
2015-07-02	P15-3057-02	ND
2015-07-02	P15-3057-04	ND
2015-10-13	P15-5502-02	ND
2015-10-13	P15-5502-03	ND
2015-10-13	P15-5502-04	ND
2015-10-13	P15-5502-01	ND
2016-01-26	P16-0324-04	ND
2016-01-26	P16-0324-03	ND
2016-01-26	P16-0324-01	ND
2016-01-26	P16-0324-02	ND
2016-04-12	P16-1575-04	ND
2016-04-12	P16-1575-03	ND
2016-04-12	P16-1575-02	ND
2016-04-12	P16-1575-01	ND
2016-07-05	P16-3512-04	ND
2016-07-05	P16-3512-03	0.500 ppb
2016-07-05	P16-3512-02	ND
2016-07-05	P16-3512-01	ND
2016-10-11	P16-5872-01	0.650 ppb
2016-10-11	P16-5872-04	ND
2016-10-11	P16-5872-02	0.710 ppb
2016-10-11	P16-5872-03	0.860 ppb
2017-01-24	P17-0319-01	ND
2017-01-24	P17-0319-03	ND
2017-01-24	P17-0319-04	0.640 ppb
2017-01-24	P17-0319-02	ND
2017-04-25	P17-1836-04	ND
2017-04-25	P17-1836-03	1.09 ppb
2017-04-25	P17-1836-02	0.760 ppb
2017-04-25	P17-1836-01	0.820 ppb
2017-07-25	P17-4224-04	0.860 ppb
2017-07-25	P17-4224-01	0.750 ppb
2017-07-25	P17-4224-03	1.000 ppb
2017-07-25	P17-4224-02	0.830 ppb
2017-10-24	P17-6299-04	0.740 ppb
2017-10-24	P17-6299-01	0.210 ppb
2017-10-24	P17-6299-03	0.520 ppb
2017-10-24	P17-6299-02	ND
2018-01-23	P18-0280-04	0.380 ppb
2018-01-23	P18-0280-01	0.330 ppb
2018-01-23	P18-0280-03	1.23 ppb
2018-01-23	P18-0280-02	0.320 ppb
2018-04-24	P18-1693-01	0.500 ppb
2018-04-24	P18-1693-04	0.400 ppb
2018-04-24	P18-1693-02	0.400 ppb
2018-04-24	P18-1693-03	0.610 ppb
2018-07-31	P18-5278-01	0.280 ppb
2018-07-31	P18-5278-04	0.280 ppb
2018-07-31	P18-5278-03	0.660 ppb
2018-07-31	P18-5278-02	0.350 ppb
2018-10-09	P18-7567-03	0.230 ppb
2018-10-09	P18-7567-04	0.480 ppb
2018-10-09	P18-7567-01	ND
2018-10-09	P18-7567-02	0.150 ppb
2019-01-15	P19-0244-01	ND
2019-01-15	P19-0244-02	ND
2019-01-15	P19-0244-03	ND
2019-01-15	P19-0244-04	ND
2019-04-09	P19-2225-02	ND
2019-04-09	P19-2225-03	ND
2019-04-09	P19-2225-04	ND
2019-04-09	P19-2225-01	ND
2019-07-23	P19-6667-01	ND
2019-07-23	P19-6667-02	ND
2019-07-23	P19-6667-04	0.610 ppb
2019-07-23	P19-6667-03	ND
2019-10-08	P19-9845-02	ND
2019-10-08	P19-9845-04	ND
2019-10-08	P19-9845-03	ND
2019-10-08	P19-9845-01	ND