Know Your Environment. Protect Your Health.

Monochloroacetic acid

Crofton, City of

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb41ND - 2.00 ppb
20190.630 ppb41ND - 2.52 ppb
20200.530 ppb41ND - 2.12 ppb
2021ND40ND
20221.20 ppb41ND - 4.80 ppb
2023ND40ND

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
2018-01-08532358ND
2018-04-09543831ND
2018-07-09561963ND
2018-10-105783512.00 ppb
2019-01-07590633ND
2019-04-096005422.52 ppb
2019-07-08622426ND
2019-10-15638250ND
2020-01-14651246ND
2020-04-146670552.12 ppb
2020-07-13681684ND
2020-10-13701071ND
2021-01-11716874ND
2021-04-12727253ND
2021-07-12746446ND
2021-10-13765663ND
2022-01-10780988ND
2022-05-098021024.80 ppb
2022-07-11812692ND
2022-10-11830086ND
2023-01-31842478ND
2023-04-25858517ND
2023-07-17874377ND
2023-10-23891384ND