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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Paris

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.68 ppb169ND - 4.20 ppb
20152.48 ppb1610ND - 6.20 ppb
20161.11 ppb166ND - 3.70 ppb
20170.419 ppb164ND - 2.10 ppb
20182.96 ppb16161.80 ppb - 3.90 ppb
20191.96 ppb1615ND - 2.90 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
2014-03-20Q14091360042.30 ppb
2014-03-20Q1409136003ND
2014-03-20Q1409136002ND
2014-03-20Q1409136001ND
2014-04-21Q14125120022.60 ppb
2014-04-21Q14125120012.40 ppb
2014-04-25Q14136420022.50 ppb
2014-04-25Q14136420012.40 ppb
2014-07-22Q1430088004ND
2014-07-22Q1430088003ND
2014-07-22Q1430088005ND
2014-07-22Q1430088006ND
2014-10-14Q14523360043.30 ppb
2014-10-14Q14523360033.90 ppb
2014-10-14Q14523360024.20 ppb
2014-10-14Q14523360013.20 ppb
2015-01-26Q15027310083.00 ppb
2015-01-26Q15027310073.00 ppb
2015-01-26Q15027310063.00 ppb
2015-01-26Q15027310053.20 ppb
2015-04-13Q15135620015.40 ppb
2015-04-13Q1513562002ND
2015-04-13Q15135620045.10 ppb
2015-04-13Q15135620035.30 ppb
2015-07-27Q1529087004ND
2015-07-27Q15290870036.20 ppb
2015-07-27Q1529087002ND
2015-07-27Q1529087001ND
2015-11-24Q15467910042.40 ppb
2015-11-24Q1546791003ND
2015-11-24Q15467910023.00 ppb
2015-11-24Q1546791001ND
2016-01-13Q1601286009ND
2016-01-13Q1601286008ND
2016-01-13Q1601286010ND
2016-01-13Q1601286011ND
2016-05-12Q1619028004ND
2016-05-12Q1619028003ND
2016-05-12Q16190280022.20 ppb
2016-05-12Q16190280012.00 ppb
2016-07-18Q1629012006ND
2016-07-18Q1629012005ND
2016-07-18Q1629012004ND
2016-07-18Q1629012003ND
2016-11-02Q16471850013.40 ppb
2016-11-02Q16471850033.70 ppb
2016-11-02Q16471850043.40 ppb
2016-11-02Q16471850023.00 ppb
2017-01-19Q17025710022.10 ppb
2017-01-19Q17025710041.60 ppb
2017-01-19Q17025710011.50 ppb
2017-01-19Q17025710031.50 ppb
2017-05-02Q1718032004ND
2017-05-02Q1718032003ND
2017-05-02Q1718032002ND
2017-05-02Q1718032001ND
2017-07-19Q1729694001ND
2017-07-19Q1729694003ND
2017-07-19Q1729694004ND
2017-07-19Q1729694002ND
2017-11-09Q1757625004ND
2017-11-09Q1757625007ND
2017-11-09Q1757625003ND
2017-11-09Q1757625006ND
2018-01-29Q18032630083.60 ppb
2018-01-29Q18032630063.40 ppb
2018-01-29Q18032630073.30 ppb
2018-01-29Q18032630053.40 ppb
2018-04-04Q18139450033.10 ppb
2018-04-04Q18139450013.90 ppb
2018-04-04Q18139450043.80 ppb
2018-04-04Q18139450023.10 ppb
2018-07-10Q18270610061.80 ppb
2018-07-10Q18270610052.60 ppb
2018-07-10Q18270610042.40 ppb
2018-07-10Q18270610032.00 ppb
2018-11-27Q18480220042.60 ppb
2018-11-27Q18480220032.70 ppb
2018-11-27Q18480220022.80 ppb
2018-11-27Q18480220012.80 ppb
2019-01-30Q19045140101.70 ppb
2019-01-30Q19045140091.70 ppb
2019-01-30Q19045140111.60 ppb
2019-01-30Q19045140121.90 ppb
2019-04-10Q19144400042.90 ppb
2019-04-10Q19144400032.60 ppb
2019-04-10Q19144400022.80 ppb
2019-04-10Q19144400012.60 ppb
2019-07-29Q19482890041.10 ppb
2019-07-29Q19482890032.90 ppb
2019-07-29Q19482890022.10 ppb
2019-07-29Q19482890012.80 ppb
2019-10-07Q19713490011.80 ppb
2019-10-07Q1971349004ND
2019-10-07Q19713490031.60 ppb
2019-10-07Q19713490021.20 ppb