Know Your Environment. Protect Your Health.

Monochloroacetic acid

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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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.05 ppb43ND - 3.30 ppb
20191.65 ppb42ND - 3.60 ppb
20200.625 ppb41ND - 2.50 ppb
20212.88 ppb43ND - 4.40 ppb
20225.10 ppb442.00 ppb - 10.00 ppb
20231.20 ppb42ND - 2.60 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
2018-02-129070172.20 ppb
2018-05-149708872.70 ppb
2018-08-131025538ND
2018-11-1310772123.30 ppb
2019-02-111120278ND
2019-05-1311573253.60 ppb
2019-08-111221593ND
2019-11-1212748143.00 ppb
2020-02-111325161ND
2020-05-1113750602.50 ppb
2020-08-101485384ND
2020-11-161665024ND
2021-02-0817690384.40 ppb
2021-05-1718416223.30 ppb
2021-08-161920672ND
2021-11-1520277453.80 ppb
2022-02-1421948294.10 ppb
2022-05-0922554094.30 ppb
2022-08-0823293482.00 ppb
2022-11-07239411310.00 ppb
2023-02-1324502852.60 ppb
2023-05-082497889ND
2023-08-072551721ND
2023-11-1326106812.20 ppb