Bromoform

City of Crosbyton

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	1.13 ppb	4	1	ND - 4.50 ppb
2015	0.172 ppb	6	1	ND - 1.03 ppb
2016	0.300 ppb	5	1	ND - 1.50 ppb
2017	0.214 ppb	5	1	ND - 1.07 ppb
2018	2.11 ppb	5	2	ND - 8.34 ppb
2019	ND	5	0	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
2014-02-13	Q1404505003	ND
2014-05-13	Q1415767002	ND
2014-08-12	Q1435523002	ND
2014-11-25	Q1457358002	4.50 ppb
2015-03-03	Q1507855020	ND
2015-03-03	Q1507855006	ND
2015-03-03	Q1507855004	ND
2015-06-03	Q1520300007	ND
2015-09-24	Q1537708007	1.03 ppb
2015-11-09	Q1543974007	ND
2016-02-25	Q1608054004	1.50 ppb
2016-02-25	Q1608054001	ND
2016-05-31	Q1621353002	ND
2016-09-22	Q1639764002	ND
2016-11-30	Q1652034002	ND
2017-03-07	Q1709465007	ND
2017-03-07	Q1709465001	ND
2017-05-09	Q1718996002	ND
2017-08-08	Q1733516002	1.07 ppb
2017-11-02	Q1756405001	ND
2018-02-06	Q1804611008	ND
2018-02-06	Q1804611010	ND
2018-04-24	Q1816511001	ND
2018-07-17	Q1828229001	8.34 ppb
2018-11-14	Q1846235002	2.19 ppb
2019-02-12	Q1906200005	ND
2019-02-12	Q1906200003	ND
2019-05-01	Q1917586002	ND
2019-08-06	Q1951421002	ND
2019-10-09	Q1972065002	ND