Know Your Environment. Protect Your Health.

Monochloroacetic acid

Town of Westover Hills

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
20180.800 ppb42ND - 1.90 ppb
20190.925 ppb43ND - 1.50 ppb
20200.350 ppb41ND - 1.40 ppb
20210.775 ppb43ND - 1.10 ppb
20220.525 ppb42ND - 1.10 ppb
20232.60 ppb441.50 ppb - 3.90 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
2018-01-22Q1802290003ND
2018-04-18Q18157360011.90 ppb
2018-08-02Q1830870001ND
2018-10-25Q18427230011.30 ppb
2019-02-06Q19054970041.000 ppb
2019-04-29Q19169080011.50 ppb
2019-09-13Q1965278001ND
2019-11-21Q19777400011.20 ppb
2020-02-18Q2006087001ND
2020-04-30Q20167370011.40 ppb
2020-09-01Q2034835001ND
2020-11-23Q2046946005ND
2021-02-25Q21050390011.10 ppb
2021-04-28Q21107410011.000 ppb
2021-08-03Q21201830011.000 ppb
2021-11-15Q2131781001ND
2022-03-03Q2207361004ND
2022-05-12Q2214287001ND
2022-09-12Q22269520011.000 ppb
2022-11-04Q22335200011.10 ppb
2023-01-18Q23025980013.40 ppb
2023-04-20Q23148840011.60 ppb
2023-09-12Q23391150013.90 ppb
2023-11-16Q23494000031.50 ppb