Know Your Environment. Protect Your Health.

Monochloroacetic acid

Shannon Hills Water Department

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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.413 ppb81ND - 3.30 ppb
20191.02 ppb93ND - 3.50 ppb
20201.58 ppb85ND - 2.90 ppb
20211.80 ppb84ND - 4.90 ppb
2022ND60ND
20233.69 ppb87ND - 6.14 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
2018-01-0218004000801ND
2018-01-0218004000901ND
2018-04-0318095018001ND
2018-05-16181360004013.30 ppb
2018-07-0218186018401ND
2018-07-0218186018301ND
2018-10-0218277010701ND
2018-10-0218277010601ND
2019-01-0819011003502ND
2019-01-08190110036022.30 ppb
2019-04-01190940166013.50 ppb
2019-04-01190940165013.40 ppb
2019-07-0919192010901ND
2019-08-1919234003101ND
2019-08-1919234003001ND
2019-10-0119276006801ND
2019-10-0119276006701ND
2020-01-06200090127012.20 ppb
2020-01-0620009012601ND
2020-04-01200940032012.90 ppb
2020-04-01200940033012.90 ppb
2020-07-06201910097012.50 ppb
2020-07-0620191009601ND
2020-10-05202810003012.10 ppb
2020-10-0520281000201ND
2021-01-06210070029013.30 ppb
2021-01-06210070028013.00 ppb
2021-04-05210980024014.90 ppb
2021-04-05210980023013.20 ppb
2021-07-0721189000901ND
2021-07-0721189001001ND
2021-10-0521280011801ND
2021-10-0521280011901ND
2022-01-0422005000801ND
2022-01-0422005000701ND
2022-07-06O199238-HAA-1ND
2022-07-06O199239-HAA-1ND
2022-10-04O202296-HAA-1ND
2022-10-04O202295-HAA-1ND
2023-01-02O204815-HAA-12.27 ppb
2023-01-02O204814-HAA-14.27 ppb
2023-04-04O207310-HAA-15.43 ppb
2023-04-04O207311-HAA-16.14 ppb
2023-07-03O210180-HAA-14.76 ppb
2023-07-03O210181-HAA-14.39 ppb
2023-10-02O212317-HAA-12.23 ppb
2023-10-02O212318-HAA-1ND