Know Your Environment. Protect Your Health.

Monochloroacetic acid

Oak Manor Water Association

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
2018ND20ND
2019ND60ND
2020ND80ND
20210.313 ppb81ND - 2.50 ppb
2022ND80ND
2023ND80ND

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
2018-06-0418158001201ND
2018-06-0418158001301ND
2019-06-1719171001501ND
2019-06-1719171001401ND
2019-09-0919255000301ND
2019-09-0919255000401ND
2019-12-0219339002001ND
2019-12-0219339002101ND
2020-03-0220064001801ND
2020-03-0220064001701ND
2020-06-0820163001601ND
2020-06-0820163001701ND
2020-09-0820254003201ND
2020-09-0820254003401ND
2020-12-0720345002501ND
2020-12-0720345002601ND
2021-03-0821070008701ND
2021-03-0821070008601ND
2021-06-0921161002001ND
2021-06-0921161002101ND
2021-09-06212520036012.50 ppb
2021-09-0621252003701ND
2021-12-0721343001901ND
2021-12-0721343001801ND
2022-03-01O195922-HAA-1ND
2022-03-01O195923-HAA-1ND
2022-06-06O198858-HAA-1ND
2022-06-28O199114-HAA-1ND
2022-09-06O201439-HAA-1ND
2022-09-06O201438-HAA-1ND
2022-12-05O204262-HAA-1ND
2022-12-05O204261-HAA-1ND
2023-03-06O206920-HAA-1ND
2023-03-06O206919-HAA-1ND
2023-06-13O209997-HAA-1ND
2023-06-13O209998-HAA-1ND
2023-09-06O211820-HAA-1ND
2023-09-06O211821-HAA-1ND
2023-12-04O214333-HAA-1ND
2023-12-04O214332-HAA-1ND