Bromodichloroacetic acid

Nelson PWS

Bromodichloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloroacetic acid and other 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	14.2 ppb	3	3	12.0 ppb - 17.9 ppb
2015	13.6 ppb	4	3	ND - 23.4 ppb
2016	10.9 ppb	4	4	9.22 ppb - 12.7 ppb
2017	9.46 ppb	4	4	7.12 ppb - 15.4 ppb
2018	6.08 ppb	4	4	4.49 ppb - 8.95 ppb
2019	1.77 ppb	8	4	ND - 7.73 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for bromodichloroacetic 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
2014-06-19	AC28667	12.8 ppb
2014-09-18	AC35648	12.0 ppb
2014-12-15	AC39513	17.9 ppb
2015-03-18	AC43592	11.3 ppb
2015-06-22	AC51261	ND
2015-09-16	AC59533	23.4 ppb
2015-12-16	AC63963	19.5 ppb
2016-03-23	AC67664	9.22 ppb
2016-06-20	AC74906	12.7 ppb
2016-09-15	AC83885	9.77 ppb
2016-12-14	AC88476	12.0 ppb
2017-03-21	AC92162	15.4 ppb
2017-06-19	AC98503	7.95 ppb
2017-09-12	AD06479	7.12 ppb
2017-12-16	AD10631	7.38 ppb
2018-03-17	AD16509	5.60 ppb
2018-06-18	AD27321	5.26 ppb
2018-09-12	AD32945	8.95 ppb
2018-11-23	AD36574	4.49 ppb
2019-03-14	AD40539	ND
2019-03-26	AD45985	ND
2019-06-17	AD49134	3.46 ppb
2019-06-17	AD49135	7.73 ppb
2019-09-10	AD55219	ND
2019-09-10	AD55220	ND
2019-12-16	AD59126	1.34 ppb
2019-12-16	AD59127	1.64 ppb