Bromoform

Peabody Water Department (MWRA)

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

362

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	2	0	ND
2015	0.373 ppb	72	32	ND - 1.24 ppb
2016	0.174 ppb	74	20	ND - 0.990 ppb
2017	ND	70	0	ND
2018	0.0694 ppb	66	8	ND - 0.640 ppb
2019	0.267 ppb	78	20	ND - 1.40 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	Result
2014-07-07	ND
2014-07-07	ND
2015-01-12	ND
2015-01-12	ND
2015-01-12	ND
2015-01-12	ND
2015-01-12	ND
2015-01-12	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	0.560 ppb
2015-05-13	0.560 ppb
2015-05-13	0.550 ppb
2015-05-13	0.550 ppb
2015-05-13	0.580 ppb
2015-05-13	0.580 ppb
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-07-14	ND
2015-07-14	ND
2015-08-13	ND
2015-08-13	ND
2015-08-13	ND
2015-08-13	ND
2015-08-13	0.800 ppb
2015-08-13	0.800 ppb
2015-08-13	0.940 ppb
2015-08-13	0.940 ppb
2015-08-13	0.840 ppb
2015-08-13	0.840 ppb
2015-08-13	0.870 ppb
2015-08-13	0.870 ppb
2015-08-13	0.880 ppb
2015-08-13	0.880 ppb
2015-08-13	0.970 ppb
2015-08-13	0.970 ppb
2015-11-16	0.620 ppb
2015-11-16	0.620 ppb
2015-11-16	ND
2015-11-16	ND
2015-11-16	0.780 ppb
2015-11-16	0.780 ppb
2015-11-16	1.24 ppb
2015-11-16	1.24 ppb
2015-11-16	0.570 ppb
2015-11-16	0.570 ppb
2015-11-16	1.19 ppb
2015-11-16	1.19 ppb
2015-11-16	1.04 ppb
2015-11-16	1.04 ppb
2015-11-16	1.01 ppb
2015-11-16	1.01 ppb
2016-01-25	ND
2016-01-25	ND
2016-01-25	ND
2016-01-25	ND
2016-01-25	ND
2016-01-25	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-02-16	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-07-14	0.500 ppb
2016-07-14	0.500 ppb
2016-07-15	ND
2016-07-15	ND
2016-08-16	ND
2016-08-16	ND
2016-08-16	ND
2016-08-16	ND
2016-08-16	0.640 ppb
2016-08-16	0.640 ppb
2016-08-16	0.990 ppb
2016-08-16	0.990 ppb
2016-08-16	0.520 ppb
2016-08-16	0.520 ppb
2016-08-16	ND
2016-08-16	ND
2016-08-16	0.820 ppb
2016-08-16	0.820 ppb
2016-08-16	0.520 ppb
2016-08-16	0.520 ppb
2016-11-15	ND
2016-11-15	ND
2016-11-15	ND
2016-11-15	ND
2016-11-15	0.830 ppb
2016-11-15	0.830 ppb
2016-11-15	ND
2016-11-15	ND
2016-11-15	ND
2016-11-15	ND
2016-11-15	0.520 ppb
2016-11-15	0.520 ppb
2016-11-15	0.510 ppb
2016-11-15	0.510 ppb
2016-11-15	0.580 ppb
2016-11-15	0.580 ppb
2017-01-30	ND
2017-01-30	ND
2017-01-30	ND
2017-01-30	ND
2017-01-30	ND
2017-01-30	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-02-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-08-16	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2017-11-15	ND
2018-02-05	ND
2018-02-05	ND
2018-02-05	ND
2018-02-05	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-02-15	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-05-17	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	0.640 ppb
2018-08-16	0.640 ppb
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-08-16	ND
2018-11-15	ND
2018-11-15	ND
2018-11-15	ND
2018-11-15	ND
2018-11-15	0.620 ppb
2018-11-15	0.620 ppb
2018-11-15	ND
2018-11-15	ND
2018-11-15	0.520 ppb
2018-11-15	0.520 ppb
2018-11-15	ND
2018-11-15	ND
2018-11-15	ND
2018-11-15	ND
2018-11-15	0.510 ppb
2018-11-15	0.510 ppb
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-13	ND
2019-02-21	ND
2019-02-21	ND
2019-02-21	ND
2019-02-21	ND
2019-02-21	ND
2019-02-21	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-08-15	1.02 ppb
2019-08-15	1.02 ppb
2019-08-15	1.40 ppb
2019-08-15	1.40 ppb
2019-08-15	0.580 ppb
2019-08-15	0.580 ppb
2019-08-15	1.17 ppb
2019-08-15	1.17 ppb
2019-08-15	1.01 ppb
2019-08-15	1.01 ppb
2019-08-15	1.23 ppb
2019-08-15	1.23 ppb
2019-08-15	1.18 ppb
2019-08-15	1.18 ppb
2019-08-15	1.09 ppb
2019-08-15	1.09 ppb
2019-08-15	1.14 ppb
2019-08-15	1.14 ppb
2019-08-15	0.600 ppb
2019-08-15	0.600 ppb
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND
2019-11-13	ND