Know Your Environment. Protect Your Health.

Bromochloroacetic acid

King County Water District No 90

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)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.362 ppb165ND - 1.40 ppb
20190.150 ppb162ND - 1.27 ppb
2020N/A00N/A
20210.667 ppb168ND - 1.93 ppb
20220.131 ppb162ND - 1.06 ppb
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
2018-03-08ND
2018-03-08ND
2018-03-08ND
2018-03-08ND
2018-06-051.22 ppb
2018-06-051.40 ppb
2018-06-051.02 ppb
2018-06-05ND
2018-09-06ND
2018-09-06ND
2018-09-061.11 ppb
2018-09-06ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-051.04 ppb
2019-03-07ND
2019-03-07ND
2019-03-07ND
2019-03-07ND
2019-06-05ND
2019-06-051.13 ppb
2019-06-05ND
2019-06-05ND
2019-09-05ND
2019-09-05ND
2019-09-05ND
2019-09-05ND
2019-12-051.27 ppb
2019-12-05ND
2019-12-05ND
2019-12-05ND
2021-03-0340889171.02 ppb
2021-03-034088919ND
2021-03-034088916ND
2021-03-0340889181.000 ppb
2021-06-0241307251.22 ppb
2021-06-0241307231.85 ppb
2021-06-0241307241.93 ppb
2021-06-0241307221.38 ppb
2021-09-024172325ND
2021-09-024172327ND
2021-09-024172328ND
2021-09-024172326ND
2021-12-024215907ND
2021-12-0242159061.21 ppb
2021-12-0242159051.06 ppb
2021-12-024215904ND
2022-03-024258126ND
2022-03-024258128ND
2022-03-024258127ND
2022-03-024258129ND
2022-06-024294988ND
2022-06-0242949891.06 ppb
2022-06-0242949901.03 ppb
2022-06-024294991ND
2022-09-064343509ND
2022-09-064343508ND
2022-09-064343511ND
2022-09-064343510ND
2022-12-074385496ND
2022-12-074385498ND
2022-12-074385497ND
2022-12-074385499ND
2023-03-024426461ND
2023-03-024426463ND
2023-03-024426462ND
2023-03-024426460ND
2023-06-014468596ND
2023-06-014468598ND
2023-06-014468595ND
2023-06-014468597ND
2023-09-044514470ND
2023-09-044514468ND
2023-09-044514467ND
2023-09-044514469ND
2023-12-054556971ND
2023-12-054556969ND
2023-12-054556970ND
2023-12-054556972ND