Know Your Environment. Protect Your Health.

Monochloroacetic acid

Long Beach 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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.98 ppb84ND - 18.0 ppb
20197.23 ppb87ND - 17.0 ppb
2020N/A00N/A
20212.94 ppb85ND - 9.70 ppb
20221.74 ppb82ND - 9.80 ppb
20231.24 ppb83ND - 4.00 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
2018-02-13ND
2018-02-13ND
2018-05-08ND
2018-05-08ND
2018-08-0713.0 ppb
2018-08-0718.0 ppb
2018-11-264.90 ppb
2018-11-263.90 ppb
2019-02-25ND
2019-02-252.90 ppb
2019-06-252.20 ppb
2019-06-252.20 ppb
2019-08-2714.0 ppb
2019-08-274.50 ppb
2019-11-1817.0 ppb
2019-11-1815.0 ppb
2021-02-1740806312.20 ppb
2021-02-174080632ND
2021-05-044113881ND
2021-05-044113880ND
2021-08-1041942782.10 ppb
2021-08-1041942793.10 ppb
2021-11-0342131846.40 ppb
2021-11-0342131879.70 ppb
2022-02-154246210ND
2022-02-154246209ND
2022-05-174283605ND
2022-05-174283603ND
2022-08-2443593804.10 ppb
2022-08-2443593819.80 ppb
2022-11-084374751ND
2022-11-084374749ND
2023-02-074415289ND
2023-02-074415288ND
2023-05-244465895ND
2023-05-244465896ND
2023-08-1545070822.30 ppb
2023-08-154507081ND
2023-11-0845439933.60 ppb
2023-11-0845439944.00 ppb