Know Your Environment. Protect Your Health.

Monochloroacetic acid

Beacon Hill Water & Sewer District

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND160ND
20190.138 ppb161ND - 2.20 ppb
2020N/A00N/A
2021ND30ND
2022ND20ND
2023ND20ND

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
2018-03-07ND
2018-03-07ND
2018-03-07ND
2018-03-07ND
2018-06-12ND
2018-06-12ND
2018-06-12ND
2018-06-12ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-12-03ND
2018-12-03ND
2018-12-03ND
2018-12-03ND
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-06-17ND
2019-06-172.20 ppb
2019-06-17ND
2019-06-17ND
2019-08-26ND
2019-08-26ND
2019-08-26ND
2019-08-26ND
2019-12-04ND
2019-12-04ND
2019-12-04ND
2019-12-04ND
2021-07-064136268ND
2021-07-064136266ND
2021-07-064136267ND
2022-09-014363477ND
2022-09-014363476ND
2023-11-274556164ND
2023-11-274556166ND