Know Your Environment. Protect Your Health.

Monochloroacetic acid

Westhaven Community Services 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.550 ppb41ND - 2.20 ppb
2020ND30ND
2021ND40ND
2022ND30ND
20231.23 ppb42ND - 2.60 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
2019-03-27CA1210024_DST_901-201903271410ND
2019-05-22CA1210024_DST_901-201905221220ND
2019-06-27CA1210024_DST_901-2019062711002.20 ppb
2019-09-16CA1210024_DST_901-201909161245ND
2020-03-12CA1210024_DST_901-202003121600ND
2020-09-23CA1210024_DST_901-202009231245ND
2020-12-02CA1210024_DST_901-202012021150ND
2021-03-03CA1210024_DST_901-202103031155ND
2021-06-16CA1210024_DST_901-202106161130ND
2021-09-15CA1210024_DST_901-202109151145ND
2021-12-15CA1210024_DST_901-202112151015ND
2022-03-09CA1210024_DST_901-202203091325ND
2022-06-08CA1210024_DST_901-202206081045ND
2022-09-15CA1210024_DST_901-202209151110ND
2023-03-08CA1210024_DST_901-2023030811202.60 ppb
2023-06-14CA1210024_DST_901-202306141035ND
2023-09-11CA1210024_DST_901-202309111120ND
2023-12-13CA1210024_DST_901-2023121311052.30 ppb