Bromoform

Labette County Rural Water District 6

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	0.363 ppb	4	2	ND - 0.740 ppb
2015	0.498 ppb	4	2	ND - 1.10 ppb
2016	0.475 ppb	4	1	ND - 1.90 ppb
2017	0.500 ppb	4	1	ND - 2.00 ppb
2018	1.05 ppb	4	2	ND - 2.40 ppb
2019	ND	4	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
2014-01-06	28141	0.712 ppb
2014-04-21	99363	0.740 ppb
2014-07-21	155064	ND
2014-10-15	214052	ND
2015-01-12	260544	ND
2015-04-13	312170	0.890 ppb
2015-09-09	403456	ND
2015-12-02	420837	1.10 ppb
2016-01-13	475795	ND
2016-04-04	519148	1.90 ppb
2016-07-12	580915	ND
2016-10-04	635259	ND
2017-01-23	679438	2.00 ppb
2017-04-11	740069	ND
2017-07-17	798373	ND
2017-10-02	851235	ND
2018-01-22	907380	1.80 ppb
2018-04-30	937854	2.40 ppb
2018-07-30	1013757	ND
2018-10-22	1064060	ND
2019-01-14	1104852	ND
2019-04-15	1138489	ND
2019-07-22	1207781	ND
2019-11-25	1279619	ND