Chlorodibromoacetic acid

Harrison County Public Water Supply District 1

Chlorodibromoacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

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	5.53 ppb	2	2	5.41 ppb - 5.65 ppb
2015	5.70 ppb	4	2	ND - 14.0 ppb
2016	2.89 ppb	8	7	ND - 4.95 ppb
2017	ND	8	0	ND
2018	3.11 ppb	4	3	ND - 4.60 ppb
2019	ND	2	0	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chlorodibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-07-29	AC30700	5.41 ppb
2014-07-29	AC30699	5.65 ppb
2015-07-22	AC54315	ND
2015-07-22	AC54314	ND
2015-10-20	AC61229	14.0 ppb
2015-10-20	AC61230	8.80 ppb
2016-01-26	AC65037	4.95 ppb
2016-01-26	AC65036	4.10 ppb
2016-05-16	AC69395	ND
2016-05-16	AC69396	4.54 ppb
2016-07-27	AC79712	1.62 ppb
2016-07-27	AC79713	1.93 ppb
2016-11-07	AC86304	2.76 ppb
2016-11-07	AC86303	3.22 ppb
2017-03-06	AC91976	ND
2017-03-06	AC91977	ND
2017-07-17	AD01424	ND
2017-07-17	AD01425	ND
2017-08-28	AD05856	ND
2017-08-28	AD05855	ND
2017-10-23	AD07909	ND
2017-10-23	AD07910	ND
2018-02-26	AD11351	ND
2018-02-26	AD11352	4.60 ppb
2018-07-24	AD29200	4.25 ppb
2018-07-24	AD29201	3.57 ppb
2019-08-06	AD51818	ND
2019-08-06	AD51819	ND