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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Plumerville

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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.313 ppb81ND - 2.50 ppb
20150.538 ppb82ND - 2.30 ppb
20160.850 ppb62ND - 2.80 ppb
20171.01 ppb83ND - 3.00 ppb
20181.65 ppb85ND - 3.70 ppb
20192.83 ppb882.00 ppb - 5.10 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
2014-01-2014023006101ND
2014-01-2014023006201ND
2014-04-1514107010301ND
2014-04-1514107010401ND
2014-07-28142100005012.50 ppb
2014-07-2814210000601ND
2014-10-2114295002401ND
2014-10-2114295002301ND
2015-01-2015022003801ND
2015-01-2015022003901ND
2015-04-2015113000101ND
2015-04-2015113000201ND
2015-07-20152030001012.00 ppb
2015-07-2015203000201ND
2015-10-1915295003901ND
2015-10-19152950040012.30 ppb
2016-04-1916112012001ND
2016-04-1916112012101ND
2016-07-1816204000301ND
2016-07-18162040004012.30 ppb
2016-10-18162940066012.80 ppb
2016-10-1816294006701ND
2017-01-1717019006301ND
2017-01-1717019006401ND
2017-05-11171310044012.30 ppb
2017-05-11171310043013.00 ppb
2017-08-07172220084012.80 ppb
2017-08-0717222008301ND
2017-11-1417320005901ND
2017-11-1417320005801ND
2018-01-1718018003401ND
2018-02-1418045001501ND
2018-04-1718109003602ND
2018-05-22181440001012.70 ppb
2018-07-17182000045012.10 ppb
2018-07-17182000046013.70 ppb
2018-10-17182900034012.60 ppb
2018-12-03183390019012.10 ppb
2019-02-13190450007012.00 ppb
2019-02-13190450009012.40 ppb
2019-04-22191150063012.20 ppb
2019-04-22191150064012.40 ppb
2019-07-22192060061025.10 ppb
2019-07-22192060062014.10 ppb
2019-10-14192900006012.20 ppb
2019-10-14192900005012.20 ppb