Know Your Environment. Protect Your Health.

Monochloroacetic acid

Glen Rogers Psd

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.350 ppb41ND - 1.40 ppb
20200.372 ppb52ND - 0.960 ppb
202115.3 ppb43ND - 53.3 ppb
202233.2 ppb2219.6 ppb - 46.8 ppb
202380.0 ppb4425.7 ppb - 137.0 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
2018-02-2135376209001ND
2018-05-2335394688001ND
2018-08-2735414397001ND
2018-11-2835434041001ND
2019-02-2535450947001ND
2019-05-22354708640011.40 ppb
2019-08-0535487767001ND
2019-11-2035514470001ND
2020-02-1035530349001ND
2020-02-1036530349001ND
2020-05-1835551276001ND
2020-08-24355733600010.960 ppb
2020-11-16355931140010.900 ppb
2021-02-108892300013.11 ppb
2021-05-1990913000153.3 ppb
2021-08-099260400014.94 ppb
2021-11-1635679569001ND
2022-02-1696588000119.6 ppb
2022-05-2598620000146.8 ppb
2023-02-211044470001137.0 ppb
2023-05-30106503000162.9 ppb
2023-08-29109100000194.4 ppb
2023-11-29110430000125.7 ppb