Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Town of Little Elm

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

 

93

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.10 ppb137ND - 6.60 ppb
20150.488 ppb161ND - 7.80 ppb
20161.88 ppb168ND - 4.30 ppb
20170.669 ppb161ND - 10.7 ppb
20181.32 ppb1610ND - 3.10 ppb
20191.01 ppb168ND - 2.30 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
2014-02-11Q1404049001ND
2014-04-09Q14112880042.60 ppb
2014-04-09Q14112880032.60 ppb
2014-04-09Q14112880022.70 ppb
2014-04-09Q14112880012.70 ppb
2014-07-11Q1428143004ND
2014-07-11Q1428143003ND
2014-07-11Q1428143002ND
2014-07-11Q1428143001ND
2014-11-12Q14556820056.60 ppb
2014-11-12Q1455682004ND
2014-11-12Q14556820025.70 ppb
2014-11-12Q14556820034.40 ppb
2015-02-19Q1506786004ND
2015-02-19Q1506786003ND
2015-02-19Q1506786002ND
2015-02-19Q1506786001ND
2015-05-01Q1516227004ND
2015-05-01Q1516227003ND
2015-05-01Q1516227002ND
2015-05-01Q1516227001ND
2015-07-31Q1529989002ND
2015-07-31Q1529989001ND
2015-07-31Q15299890037.80 ppb
2015-07-31Q1529989004ND
2015-10-15Q1540523004ND
2015-10-15Q1540523003ND
2015-10-15Q1540523002ND
2015-10-15Q1540523001ND
2016-02-02Q1604385004ND
2016-02-02Q1604385003ND
2016-02-02Q1604385002ND
2016-02-02Q1604385001ND
2016-04-19Q16153350033.70 ppb
2016-04-19Q16153350013.30 ppb
2016-04-19Q16153350023.40 ppb
2016-04-19Q16153350043.50 ppb
2016-08-02Q16317970044.00 ppb
2016-08-02Q16317970033.90 ppb
2016-08-02Q16317970023.90 ppb
2016-08-02Q16317970014.30 ppb
2016-10-18Q1644224002ND
2016-10-18Q1644224004ND
2016-10-18Q1644224001ND
2016-10-18Q1644224003ND
2017-01-26Q1703696003ND
2017-01-26Q1703696004ND
2017-01-26Q1703696002ND
2017-01-26Q1703696001ND
2017-05-01Q1717613004ND
2017-05-01Q1717613003ND
2017-05-01Q1717613002ND
2017-05-01Q171761300110.7 ppb
2017-07-26Q1730863002ND
2017-07-26Q1730863003ND
2017-07-26Q1730863001ND
2017-07-26Q1730863004ND
2017-10-31Q1756024002ND
2017-10-31Q1756024001ND
2017-10-31Q1756024003ND
2017-10-31Q1756024004ND
2018-01-29Q1803507002ND
2018-01-29Q1803507004ND
2018-01-29Q1803507001ND
2018-01-29Q1803507003ND
2018-05-07Q18182370032.70 ppb
2018-05-07Q18182370023.00 ppb
2018-05-07Q18182370042.70 ppb
2018-05-07Q18182370013.10 ppb
2018-08-07Q18313000051.000 ppb
2018-08-07Q1831300002ND
2018-08-07Q1831300003ND
2018-08-07Q18313000041.70 ppb
2018-10-24Q18430100041.70 ppb
2018-10-24Q18430100031.60 ppb
2018-10-24Q18430100021.60 ppb
2018-10-24Q18430100012.00 ppb
2019-01-24Q19037020012.30 ppb
2019-01-24Q19037020032.20 ppb
2019-01-24Q19037020042.20 ppb
2019-01-24Q19037020022.10 ppb
2019-05-13Q19239330042.10 ppb
2019-05-13Q19239330032.10 ppb
2019-05-13Q19239330022.10 ppb
2019-05-13Q1923933001ND
2019-08-22Q1958340002ND
2019-08-22Q1958340001ND
2019-08-22Q1958340004ND
2019-08-22Q19583400031.10 ppb
2019-10-16Q1972951003ND
2019-10-16Q1972951004ND
2019-10-16Q1972951005ND
2019-10-16Q1972951002ND