Know Your Environment. Protect Your Health.

Monochloroacetic acid

Arlington Water Department

Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.263 ppb81ND - 2.10 ppb
2019ND80ND
2020N/A00N/A
20210.450 ppb81ND - 3.60 ppb
20220.350 ppb81ND - 2.80 ppb
20230.375 ppb81ND - 3.00 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a public health goal. This health guideline protects against change to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-13ND
2018-02-13ND
2018-05-15ND
2018-05-15ND
2018-08-212.10 ppb
2018-08-21ND
2018-11-19ND
2018-11-19ND
2019-02-19ND
2019-02-19ND
2019-05-20ND
2019-05-20ND
2019-08-19ND
2019-08-19ND
2019-11-18ND
2019-11-18ND
2021-02-184078076ND
2021-02-184078074ND
2021-05-184118961ND
2021-05-184118959ND
2021-08-174166173ND
2021-08-1741636893.60 ppb
2021-11-174210652ND
2021-11-174210654ND
2022-02-154246180ND
2022-02-154246178ND
2022-05-184296771ND
2022-05-184296773ND
2022-08-154339553ND
2022-08-1543395502.80 ppb
2022-11-154379471ND
2022-11-154379463ND
2023-02-214417101ND
2023-02-214417098ND
2023-05-164457501ND
2023-05-164457507ND
2023-08-2145070433.00 ppb
2023-08-214507045ND
2023-11-214562902ND
2023-11-214562900ND