Know Your Environment. Protect Your Health.

Monochloroacetic acid

Williamson County Municipal Utility District 11

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.525 ppb81ND - 4.20 ppb
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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
2018-01-31AE11548ND
2018-04-13AE22376ND
2018-07-12AE33123ND
2018-10-03AE42486ND
2019-03-20AE59199ND
2019-03-20AE59205ND
2019-05-09AE656404.20 ppb
2019-05-09AE65644ND
2019-07-23AE75495ND
2019-07-23AE75496ND
2019-12-06AE91544ND
2019-12-06AE91547ND
2020-03-10AF01961ND
2020-03-10AF01963ND
2020-04-16AF06970ND
2020-04-16AF06972ND
2020-08-03AF21520ND
2020-08-03AF21523ND
2020-10-28AF32384ND
2020-10-28AF32390ND
2021-01-28AF41542ND
2021-01-28AF41544ND
2021-04-15AF50272ND
2021-04-15AF50274ND
2021-07-14AF61866ND
2021-07-14AF61869ND
2021-11-15AF76518ND
2021-11-15AF76519ND
2022-03-07AF87626ND
2022-03-07AF87631ND
2022-04-14AF93345ND
2022-05-10AF96202ND
2022-07-14AG04690ND
2022-07-14AG04685ND
2022-10-06AG16260ND
2022-10-06AG16263ND
2023-01-12AG24345ND
2023-01-12AG24349ND
2023-04-11AG36246ND
2023-04-11AG36267ND
2023-09-06AG55024ND
2023-09-06AG55027ND
2023-11-06AG62351ND
2023-11-06AG62369ND