Know Your Environment. Protect Your Health.

Monochloroacetic acid

Marilee Elmont

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
20221.55 ppb221.50 ppb - 1.60 ppb
20231.45 ppb21ND - 2.90 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
2018-09-24Q1838299001ND
2018-09-24Q1838299002ND
2019-09-24Q1968483001ND
2019-09-24Q1968483002ND
2020-06-18Q2024779001ND
2020-06-18Q2024779002ND
2021-06-16Q2115770001ND
2021-06-16Q2115770002ND
2022-06-15Q22166890021.50 ppb
2022-06-15Q22166890031.60 ppb
2023-08-14Q2333684001ND
2023-08-14Q23336840022.90 ppb