Know Your Environment. Protect Your Health.

Monochloroacetic acid

Highway 513 Water Supply

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.

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.33 ppb168ND - 13.2 ppb
20190.575 ppb168ND - 1.30 ppb
20201.74 ppb881.20 ppb - 3.10 ppb
20212.01 ppb86ND - 3.70 ppb
20221.09 ppb84ND - 2.40 ppb
20234.76 ppb10102.90 ppb - 8.70 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
2018-01-1035368365001ND
2018-01-1035368365002ND
2018-01-1035368365002ND
2018-01-1035368365001ND
2018-04-1935387664002ND
2018-04-1935387664001ND
2018-04-1935387664002ND
2018-04-1935387664001ND
2018-07-25354070480019.60 ppb
2018-07-253540704800213.2 ppb
2018-07-25354070480019.60 ppb
2018-07-253540704800213.2 ppb
2018-10-18354254830012.10 ppb
2018-10-18354254830012.10 ppb
2018-10-18354254830021.70 ppb
2018-10-18354254830021.70 ppb
2019-01-22354439090011.10 ppb
2019-01-22354439090021.10 ppb
2019-01-22354439090011.10 ppb
2019-01-22354439090021.10 ppb
2019-04-1135463085001ND
2019-04-1135463085002ND
2019-04-1135463085001ND
2019-04-1135463085002ND
2019-07-0235479720002ND
2019-07-0235479720001ND
2019-07-0235479720001ND
2019-07-0235479720002ND
2019-10-18355062440011.30 ppb
2019-10-18355062440021.10 ppb
2019-10-18355062440021.10 ppb
2019-10-18355062440011.30 ppb
2020-01-02355219290021.20 ppb
2020-01-02355219290011.20 ppb
2020-04-08355426920012.90 ppb
2020-04-08355426920023.10 ppb
2020-07-10355624220011.50 ppb
2020-07-10355624220021.20 ppb
2020-10-27355883070021.20 ppb
2020-10-27355883070011.60 ppb
2021-01-28356080610013.10 ppb
2021-01-28356080610023.70 ppb
2021-04-28356297880013.30 ppb
2021-04-28356297880022.60 ppb
2021-07-0935646542001ND
2021-07-0935646542002ND
2021-11-05356766720011.10 ppb
2021-11-05356766720022.30 ppb
2022-01-13356908620012.40 ppb
2022-01-13356908620022.40 ppb
2022-04-22357127190012.00 ppb
2022-04-22357127190021.90 ppb
2022-07-0635732104002ND
2022-07-0635732104001ND
2022-10-1435753708001ND
2022-10-1435753708002ND
2023-01-06357709850015.60 ppb
2023-01-06357709850028.70 ppb
2023-01-30357767570013.80 ppb
2023-01-30357767570023.60 ppb
2023-04-18357937240012.90 ppb
2023-04-18357937240022.90 ppb
2023-07-26358161340015.80 ppb
2023-07-26358161340025.60 ppb
2023-10-25358374630014.30 ppb
2023-10-25358374630024.40 ppb