Know Your Environment. Protect Your Health.

Bromochloroacetic acid

King County Water District #49

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.276 ppb163ND - 1.87 ppb
20190.197 ppb162ND - 1.62 ppb
2020N/A00N/A
20210.0719 ppb161ND - 1.15 ppb
2022ND160ND
2023ND160ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.02 ppb

The EWG Health Guideline of 0.02 ppb for bromochloroacetic 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
2018-03-14ND
2018-03-14ND
2018-03-14ND
2018-03-141.50 ppb
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-131.87 ppb
2018-09-13ND
2018-09-13ND
2018-09-13ND
2018-09-13ND
2018-12-121.04 ppb
2018-12-12ND
2018-12-12ND
2018-12-12ND
2019-03-14ND
2019-03-14ND
2019-03-14ND
2019-03-14ND
2019-06-19ND
2019-06-191.53 ppb
2019-06-19ND
2019-06-19ND
2019-09-12ND
2019-09-12ND
2019-09-121.62 ppb
2019-09-12ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2021-03-114088961ND
2021-03-114088958ND
2021-03-114088959ND
2021-03-114088960ND
2021-06-1741307691.15 ppb
2021-06-174130771ND
2021-06-174130768ND
2021-06-174130770ND
2021-09-164172373ND
2021-09-164172372ND
2021-09-164172371ND
2021-09-164172374ND
2021-12-154215953ND
2021-12-154215951ND
2021-12-154215950ND
2021-12-154215952ND
2022-03-094258168ND
2022-03-094258167ND
2022-03-094258169ND
2022-03-094258166ND
2022-06-144295029ND
2022-06-144295031ND
2022-06-144295030ND
2022-06-144295028ND
2022-09-194343557ND
2022-09-194343554ND
2022-09-194343556ND
2022-09-194343555ND
2022-12-204385543ND
2022-12-204385545ND
2022-12-204385542ND
2022-12-204385544ND
2023-03-154426498ND
2023-03-154426500ND
2023-03-154426499ND
2023-03-154426501ND
2023-06-154468642ND
2023-06-154468645ND
2023-06-154468644ND
2023-06-154468643ND
2023-09-144514504ND
2023-09-144514506ND
2023-09-144514507ND
2023-09-144514505ND
2023-12-144557008ND
2023-12-144557010ND
2023-12-144557009ND
2023-12-144557007ND