Know Your Environment. Protect Your Health.

Monochloroacetic acid

Richmond, 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.800 ppb31ND - 2.40 ppb
20191.000 ppb42ND - 2.00 ppb
20200.767 ppb31ND - 2.30 ppb
20211.25 ppb42ND - 2.60 ppb
2022ND30ND
20232.90 ppb112.90 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
2018-03-149383522.40 ppb
2018-05-23974381ND
2018-08-221029447ND
2019-02-261126014ND
2019-05-301157835ND
2019-08-2912309982.00 ppb
2019-11-2512796052.00 ppb
2020-02-2513304962.30 ppb
2020-11-181666631ND
2020-12-021690153ND
2021-03-101792728ND
2021-05-1218378822.60 ppb
2021-09-2219659852.40 ppb
2021-11-172029642ND
2022-02-262211617ND
2022-05-302267408ND
2022-08-082329376ND
2023-08-0925524272.90 ppb