Know Your Environment. Protect Your Health.

Bromochloroacetic acid

Arlington Water Department

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.700 ppb85ND - 1.30 ppb
20190.588 ppb84ND - 1.20 ppb
2020N/A00N/A
20210.413 ppb83ND - 1.10 ppb
20220.575 ppb84ND - 1.50 ppb
20230.588 ppb84ND - 1.20 ppb

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
2018-02-13ND
2018-02-131.10 ppb
2018-05-15ND
2018-05-151.000 ppb
2018-08-211.10 ppb
2018-08-211.10 ppb
2018-11-191.30 ppb
2018-11-19ND
2019-02-19ND
2019-02-191.20 ppb
2019-05-20ND
2019-05-201.10 ppb
2019-08-191.20 ppb
2019-08-19ND
2019-11-181.20 ppb
2019-11-18ND
2021-02-184078076ND
2021-02-184078074ND
2021-05-184118959ND
2021-05-1841189611.10 ppb
2021-08-174166173ND
2021-08-1741636891.10 ppb
2021-11-1742106541.10 ppb
2021-11-174210652ND
2022-02-1542461781.10 ppb
2022-02-154246180ND
2022-05-184296773ND
2022-05-1842967711.50 ppb
2022-08-1543395531.000 ppb
2022-08-1543395501.000 ppb
2022-11-154379463ND
2022-11-154379471ND
2023-02-214417098ND
2023-02-214417101ND
2023-05-1644575071.20 ppb
2023-05-164457501ND
2023-08-2145070431.20 ppb
2023-08-2145070451.20 ppb
2023-11-2145629021.10 ppb
2023-11-214562900ND