Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Santa Rosa

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND30ND
2021ND40ND
20221.28 ppb41ND - 5.10 ppb
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
2018-01-31AE11558ND
2018-04-27AE24377ND
2018-07-27AE34918ND
2018-10-12AE43446ND
2019-02-28AE56557ND
2019-05-09AE65691ND
2019-07-19AE75316ND
2019-10-21AE87059ND
2020-03-19AF03782ND
2020-07-24AF20666ND
2020-10-06AF29670ND
2021-03-11AF46705ND
2021-05-10AF52971ND
2021-09-22AF70802ND
2021-12-08AF78329ND
2022-01-31AF82549ND
2022-04-13AF93355ND
2022-09-28AG15248ND
2022-12-05AG206865.10 ppb
2023-03-10AG32654ND
2023-03-10AG32659ND
2023-05-19AG41484ND
2023-05-19AG41485ND
2023-07-19AG49269ND
2023-07-19AG49273ND
2023-10-18AG60250ND
2023-10-18AG60251ND