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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

West Travis County Regional WS

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
2014ND160ND
20150.456 ppb162ND - 4.20 ppb
20160.800 ppb165ND - 3.30 ppb
20171.23 ppb164ND - 5.70 ppb
2018ND160ND
20190.806 ppb162ND - 7.00 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
2014-03-17AC47126ND
2014-03-17AC47127ND
2014-03-17AC47125ND
2014-03-17AC47122ND
2014-06-25AC58083ND
2014-06-25AC58085ND
2014-06-25AC58082ND
2014-06-25AC58088ND
2014-08-25AC65124ND
2014-08-25AC65121ND
2014-08-25AC65122ND
2014-08-25AC65123ND
2014-12-02AC73333ND
2014-12-02AC73324ND
2014-12-02AC73325ND
2014-12-02AC73322ND
2015-03-16AC84389ND
2015-03-16AC84392ND
2015-03-16AC84393ND
2015-03-16AC84397ND
2015-05-19AC925333.10 ppb
2015-05-19AC92526ND
2015-05-19AC92529ND
2015-05-19AC92527ND
2015-08-20AD04825ND
2015-08-20AD04823ND
2015-08-20AD04824ND
2015-08-20AD04826ND
2015-11-02AD12184ND
2015-11-02AD12175ND
2015-11-02AD12163ND
2015-11-02AD121794.20 ppb
2016-03-14AD284483.30 ppb
2016-03-14AD28447ND
2016-03-14AD284452.80 ppb
2016-03-14AD28443ND
2016-05-25AD382772.30 ppb
2016-05-25AD38229ND
2016-05-25AD38224ND
2016-05-25AD382722.30 ppb
2016-08-01AD46383ND
2016-08-01AD46382ND
2016-08-01AD46380ND
2016-08-01AD46411ND
2016-10-25AD54578ND
2016-10-25AD545812.10 ppb
2016-10-25AD54579ND
2016-10-25AD54580ND
2017-03-13AD746255.70 ppb
2017-03-13AD74619ND
2017-03-13AD746244.40 ppb
2017-03-13AD74618ND
2017-06-07AD867494.60 ppb
2017-06-07AD867504.90 ppb
2017-06-07AD86753ND
2017-06-07AD86751ND
2017-08-23AD93965ND
2017-08-23AD93964ND
2017-08-23AD93963ND
2017-08-23AD93966ND
2017-11-21AE05544ND
2017-11-21AE05546ND
2017-11-21AE05545ND
2017-11-21AE05543ND
2018-02-15AE14017ND
2018-02-15AE14018ND
2018-02-15AE14007ND
2018-02-15AE14016ND
2018-05-03AE24992ND
2018-05-03AE24998ND
2018-05-03AE25000ND
2018-05-03AE25025ND
2018-07-23AE34131ND
2018-07-23AE34074ND
2018-07-23AE34081ND
2018-07-23AE34075ND
2018-10-04AE42674ND
2018-10-04AE42673ND
2018-10-04AE42672ND
2018-10-04AE42671ND
2019-01-23AE50884ND
2019-01-23AE50883ND
2019-01-23AE50885ND
2019-01-23AE50886ND
2019-04-30AE64062ND
2019-04-30AE640635.90 ppb
2019-04-30AE64064ND
2019-04-30AE64065ND
2019-08-21AE79778ND
2019-08-21AE79779ND
2019-08-21AE79784ND
2019-08-21AE79780ND
2019-10-22AE87173ND
2019-10-22AE87178ND
2019-10-22AE87176ND
2019-10-22AE871717.00 ppb