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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Lakeside Water

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.

MORE ABOUT THIS CONTAMINANT

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND80ND
2016ND70ND
2017ND80ND
20180.325 ppb81ND - 2.60 ppb
20190.975 ppb81ND - 7.80 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-0614008001301ND
2014-01-0614008001601ND
2014-05-2814149002701ND
2014-05-2814149003001ND
2014-08-2714240007501ND
2014-08-2714240007401ND
2014-10-0814282008401ND
2014-10-0814282008601ND
2014-10-2714303001501ND
2014-10-2714303002101ND
2015-01-0515008008401ND
2015-01-0515008008301ND
2015-04-0615099005401ND
2015-04-0615099005601ND
2015-07-0815190009301ND
2015-07-0815190009201ND
2015-10-0715281001201ND
2015-10-0715281001101ND
2016-01-0516007002901ND
2016-01-0516007003001ND
2016-04-0616098007601ND
2016-07-0516189005401ND
2016-07-0516189005901ND
2016-10-0416280002301ND
2016-10-0416280001601ND
2017-01-0317005000101ND
2017-01-0317005000601ND
2017-04-0417095005101ND
2017-04-0417095007101ND
2017-07-0317187002101ND
2017-07-0317187000501ND
2017-10-0217278000401ND
2017-10-0217278000601ND
2018-01-0218004003901ND
2018-01-02180040045012.60 ppb
2018-04-0918101004701ND
2018-04-0918101004601ND
2018-07-1018193002001ND
2018-07-1018193002101ND
2018-10-1618291005001ND
2018-10-1618291005101ND
2019-02-05190380044017.80 ppb
2019-02-0519038004501ND
2019-04-0119094001101ND
2019-04-0119094000701ND
2019-08-2019233002201ND
2019-08-2019233001301ND
2019-10-0119276001501ND
2019-10-0119276000101ND