Bromoform

Prescott, City of

NOTE: Prescott, City of purchases water from Bourbon County Rural Water District 2c which is required to test for bromoform. Sample information shown below was taken by Bourbon County Rural Water District 2c.

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	Range of results
2014	ND	1	ND
2015	ND	1	ND
2016	ND	1	ND
2017	ND	4	ND
2018	ND	4	ND
2019	ND	4	ND

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
2014-02-10	60153	ND
2014-02-10	60104	ND
2014-05-06	109901	ND
2014-05-06	109900	ND
2014-08-25	179812	ND
2014-08-25	179811	ND
2014-11-18	233347	ND
2014-11-18	233346	ND
2015-08-10	382888	ND
2015-08-11	382889	ND
2016-08-22	608509	ND
2016-08-22	608508	ND
2017-08-08	814692	ND
2017-08-08	814691	ND
2018-01-29	906617	ND
2018-01-29	906616	ND
2018-05-07	966186	ND
2018-05-07	966185	ND
2018-08-13	1025539	ND
2018-08-13	1025536	ND
2018-11-07	1074473	ND
2018-11-07	1074472	ND
2019-02-05	1117695	ND
2019-02-05	1117694	ND
2019-05-14	1157213	ND
2019-06-03	1178377	ND
2019-07-29	1212810	ND
2019-07-29	1212809	ND
2019-11-04	1268026	ND
2019-11-04	1268027	ND