Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Toyah

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.48 ppb42ND - 3.30 ppb
20191.38 ppb441.000 ppb - 2.40 ppb
20200.975 ppb42ND - 2.00 ppb
20210.325 ppb41ND - 1.30 ppb
20221.60 ppb42ND - 4.90 ppb
20231.05 ppb21ND - 2.10 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
2018-01-25Q1803183002ND
2018-06-14Q1823838001ND
2018-08-30Q18348370012.60 ppb
2018-10-25Q18427360013.30 ppb
2019-02-21Q19077980011.000 ppb
2019-05-02Q19183400061.10 ppb
2019-08-15Q19560590012.40 ppb
2019-10-24Q19736890011.000 ppb
2020-02-06Q2004914001ND
2020-06-04Q20223900051.90 ppb
2020-08-20Q20333980012.00 ppb
2020-10-14Q2040434001ND
2021-03-15Q2106894005ND
2021-05-17Q21128800011.30 ppb
2021-08-16Q2122425001ND
2021-10-25Q2130310001ND
2022-02-07Q2204390010ND
2022-04-25Q2212490001ND
2022-08-22Q22249190011.50 ppb
2022-10-17Q22311800014.90 ppb
2023-02-06Q2304369002ND
2023-05-22Q23193540012.10 ppb