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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Possum Kingdom Water Supply Corporation

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.288 ppb81ND - 2.30 ppb
2015ND80ND
2016ND80ND
2017ND80ND
20180.963 ppb83ND - 3.90 ppb
20190.788 ppb84ND - 2.20 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
2014-03-05Q1406963001ND
2014-03-05Q14069630022.30 ppb
2014-06-17Q1421753002ND
2014-06-17Q1421753001ND
2014-09-09Q1442536004ND
2014-09-09Q1442536003ND
2014-12-05Q1458977002ND
2014-12-05Q1458977001ND
2015-03-11Q1509045002ND
2015-03-11Q1509045001ND
2015-06-10Q1521751002ND
2015-06-10Q1521751003ND
2015-09-15Q1536179004ND
2015-09-15Q1536179003ND
2015-12-07Q1548432005ND
2015-12-07Q1548432004ND
2016-03-08Q1610000002ND
2016-03-08Q1610000001ND
2016-06-07Q1622993003ND
2016-06-07Q1622993002ND
2016-09-13Q1637716011ND
2016-09-13Q1637716010ND
2016-11-28Q1651776001ND
2016-11-28Q1651776002ND
2017-02-22Q1707959002ND
2017-02-22Q1707959001ND
2017-05-16Q1720212002ND
2017-05-16Q1720212001ND
2017-08-15Q1736114004ND
2017-08-15Q1736114003ND
2017-11-29Q1760923002ND
2017-11-29Q1760923001ND
2018-02-27Q1808320002ND
2018-02-27Q1808320001ND
2018-05-30Q1821646001ND
2018-05-30Q1821646003ND
2018-08-21Q18337730011.60 ppb
2018-08-21Q18337730072.20 ppb
2018-11-13Q1845786002ND
2018-11-13Q18457860013.90 ppb
2019-02-26Q19080660021.30 ppb
2019-02-26Q19080660011.60 ppb
2019-05-30Q1930099009ND
2019-05-30Q19300990082.20 ppb
2019-09-19Q1967101004ND
2019-09-19Q19671010031.20 ppb
2019-12-02Q1978390001ND
2019-12-02Q1978390002ND