Know Your Environment. Protect Your Health.

Monochloroacetic acid

Staff Water Supply Corporation Lacasa Area

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
20184.20 ppb442.10 ppb - 8.60 ppb
20192.83 ppb43ND - 5.20 ppb
20201.80 ppb43ND - 2.70 ppb
20210.925 ppb42ND - 2.50 ppb
20220.350 ppb41ND - 1.40 ppb
20232.15 ppb441.40 ppb - 2.80 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
2018-03-01Q18087200013.70 ppb
2018-05-23Q18209870018.60 ppb
2018-08-29Q18347200012.40 ppb
2018-11-27Q18483080022.10 ppb
2019-01-16Q19028180013.90 ppb
2019-05-22Q19281590022.20 ppb
2019-09-17Q19666110015.20 ppb
2019-12-16Q1980352001ND
2020-03-04Q20084370012.50 ppb
2020-06-01Q20214040012.70 ppb
2020-09-08Q20354110012.00 ppb
2020-11-19Q2046044001ND
2021-03-16Q21067800012.50 ppb
2021-05-19Q21130840011.20 ppb
2021-09-20Q2125646002ND
2021-11-23Q2132721001ND
2022-03-01Q22068710021.40 ppb
2022-05-10Q2213904001ND
2022-08-03Q2222260001ND
2022-11-03Q2233459001ND
2023-01-12Q23019670012.80 ppb
2023-04-04Q23123060021.80 ppb
2023-07-25Q23295130012.60 ppb
2023-10-09Q23428850011.40 ppb