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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Nacogdoches

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
20140.763 ppb164ND - 4.40 ppb
20151.05 ppb164ND - 5.40 ppb
20160.413 ppb162ND - 3.70 ppb
20170.619 ppb163ND - 6.10 ppb
20180.688 ppb167ND - 1.90 ppb
20190.506 ppb166ND - 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
2014-03-04Q14067810122.30 ppb
2014-03-04Q14067810112.00 ppb
2014-03-04Q1406781010ND
2014-03-04Q1406781009ND
2014-06-09Q1419946004ND
2014-06-09Q1419946003ND
2014-06-09Q1419946002ND
2014-06-09Q1419946001ND
2014-09-18Q1445817003ND
2014-09-18Q1445817002ND
2014-09-18Q14458170043.50 ppb
2014-09-18Q14458170054.40 ppb
2014-12-05Q1458868004ND
2014-12-05Q1458868003ND
2014-12-05Q1458868002ND
2014-12-05Q1458868001ND
2015-03-13Q1509587007ND
2015-03-13Q1509587006ND
2015-03-13Q1509587005ND
2015-03-13Q1509587004ND
2015-05-04Q1516197001ND
2015-05-04Q1516197002ND
2015-05-04Q15161970042.00 ppb
2015-05-04Q1516197003ND
2015-08-12Q1531877004ND
2015-08-12Q15318770034.70 ppb
2015-08-12Q1531877002ND
2015-08-12Q1531877001ND
2015-11-20Q15463150044.70 ppb
2015-11-20Q15463150035.40 ppb
2015-11-20Q1546315002ND
2015-11-20Q1546315001ND
2016-02-23Q1607697008ND
2016-02-23Q1607697007ND
2016-02-23Q16076970093.70 ppb
2016-02-23Q16076970102.90 ppb
2016-06-21Q1625026004ND
2016-06-21Q1625026003ND
2016-06-21Q1625026002ND
2016-06-21Q1625026001ND
2016-09-08Q1636320006ND
2016-09-08Q1636320005ND
2016-09-08Q1636320004ND
2016-09-08Q1636320003ND
2016-12-02Q1652666001ND
2016-12-02Q1652666004ND
2016-12-02Q1652666002ND
2016-12-02Q1652666003ND
2017-02-08Q17056260081.30 ppb
2017-02-08Q1705626007ND
2017-02-08Q1705626006ND
2017-02-08Q1705626005ND
2017-04-24Q17165640042.50 ppb
2017-04-24Q17165640036.10 ppb
2017-04-24Q1716564002ND
2017-04-24Q1716564001ND
2017-08-01Q1731839004ND
2017-08-01Q1731839003ND
2017-08-01Q1731839005ND
2017-08-01Q1731839006ND
2017-10-25Q1754902010ND
2017-10-25Q1754902002ND
2017-10-25Q1754902009ND
2017-10-25Q1754902001ND
2018-01-30Q1803538008ND
2018-01-30Q1803538003ND
2018-01-30Q1803538007ND
2018-01-30Q1803538006ND
2018-04-18Q18159970071.20 ppb
2018-04-18Q1815997002ND
2018-04-18Q18159970031.80 ppb
2018-04-18Q18159970081.90 ppb
2018-07-26Q18297920061.70 ppb
2018-07-26Q18297920051.70 ppb
2018-07-26Q1829792004ND
2018-07-26Q1829792003ND
2018-10-31Q18438870031.60 ppb
2018-10-31Q18438870041.10 ppb
2018-10-31Q1843887002ND
2018-10-31Q1843887001ND
2019-01-17Q1902680007ND
2019-01-17Q1902680016ND
2019-01-17Q19026800172.30 ppb
2019-01-17Q19026800081.000 ppb
2019-04-24Q1916505002ND
2019-04-24Q19165050041.20 ppb
2019-04-24Q1916505001ND
2019-04-24Q1916505003ND
2019-08-06Q1951518006ND
2019-08-06Q1951518005ND
2019-08-06Q1951518004ND
2019-08-06Q1951518003ND
2019-10-17Q1972973001ND
2019-10-17Q19729730041.50 ppb
2019-10-17Q19729730031.10 ppb
2019-10-17Q19729730021.000 ppb