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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Avoyelles Parish Waterworks District 1

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND80ND
20170.983 ppb126ND - 3.50 ppb
20180.188 ppb162ND - 1.50 ppb
20190.750 ppb168ND - 1.90 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
2014-05-051298676ND
2014-05-051298675ND
2014-05-051298676ND
2014-05-051298675ND
2015-05-211397083ND
2015-05-211397084ND
2015-05-211397084ND
2015-05-211397083ND
2016-05-051489434ND
2016-05-051489435ND
2016-05-051489435ND
2016-05-051489434ND
2016-05-201493264ND
2016-05-201493265ND
2016-05-201493265ND
2016-05-201493264ND
2017-05-11353119870011.40 ppb
2017-05-11353119870021.000 ppb
2017-05-11353119870011.40 ppb
2017-05-11353119870021.000 ppb
2017-08-1035329837013ND
2017-08-10353298370143.50 ppb
2017-08-1035329837013ND
2017-08-10353298370143.50 ppb
2017-11-1635349530001ND
2017-11-1635349530002ND
2017-11-1635349530001ND
2017-11-1635349530002ND
2018-02-0935374047002ND
2018-02-0935374047001ND
2018-02-0935374047002ND
2018-02-0935374047001ND
2018-05-0235389937002ND
2018-05-0235389937001ND
2018-05-0235389937002ND
2018-05-0235389937001ND
2018-08-2835414232002ND
2018-08-2835414232001ND
2018-08-2835414232002ND
2018-08-2835414232001ND
2018-11-02354282150011.50 ppb
2018-11-0235428215002ND
2018-11-02354282150011.50 ppb
2018-11-0235428215002ND
2019-02-1435448499002ND
2019-02-14354484990011.40 ppb
2019-02-14354484990011.40 ppb
2019-02-1435448499002ND
2019-05-0635467657002ND
2019-05-0635467657002ND
2019-05-0635467657001ND
2019-05-0635467657001ND
2019-08-06354884020021.70 ppb
2019-08-06354884020011.90 ppb
2019-08-06354884020011.90 ppb
2019-08-06354884020021.70 ppb
2019-11-14355126480011.000 ppb
2019-11-1435512648002ND
2019-11-14355126480011.000 ppb
2019-11-1435512648002ND