Know Your Environment. Protect Your Health.

Monochloroacetic acid

Westbound Water Supply Corporation Cisco Source

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.13 ppb86ND - 3.70 ppb
20192.35 ppb84ND - 8.80 ppb
20200.875 ppb82ND - 4.00 ppb
20210.383 ppb61ND - 2.30 ppb
20221.000 ppb84ND - 2.80 ppb
20232.61 ppb881.20 ppb - 7.90 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
2018-03-01Q1808718002ND
2018-03-01Q1808718001ND
2018-05-24Q18209910022.80 ppb
2018-05-24Q18209910013.70 ppb
2018-08-29Q18347180012.90 ppb
2018-08-29Q18347180023.10 ppb
2018-11-28Q18483120092.20 ppb
2018-11-28Q18483120102.30 ppb
2019-01-17Q19028150013.20 ppb
2019-01-17Q19028150023.10 ppb
2019-05-23Q19281630018.80 ppb
2019-05-23Q19281630023.70 ppb
2019-09-18Q1966615001ND
2019-09-18Q1966615002ND
2019-12-17Q1980357010ND
2019-12-17Q1980357011ND
2020-03-05Q2008443001ND
2020-03-05Q2008443002ND
2020-06-04Q2022359011ND
2020-06-04Q2022359012ND
2020-09-14Q2036344001ND
2020-09-14Q2036344002ND
2020-11-09Q20436310024.00 ppb
2020-11-09Q20436310013.00 ppb
2021-02-09Q2103863009ND
2021-02-09Q2103863010ND
2021-05-10Q2111901001ND
2021-05-10Q2111901002ND
2021-09-21Q2125792001ND
2021-09-21Q21257920022.30 ppb
2022-02-16Q22057650102.10 ppb
2022-02-16Q22057650112.80 ppb
2022-05-03Q2213114001ND
2022-05-03Q22131140022.10 ppb
2022-08-11Q2223340001ND
2022-08-11Q22233400021.000 ppb
2022-10-18Q2231745001ND
2022-10-18Q2231745002ND
2023-02-07Q23046710041.40 ppb
2023-02-07Q23046710054.00 ppb
2023-04-18Q23142730011.40 ppb
2023-04-18Q23142730021.40 ppb
2023-07-12Q23273470122.20 ppb
2023-07-12Q23273470137.90 ppb
2023-12-05Q23516440011.20 ppb
2023-12-05Q23516440021.40 ppb