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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Kempner WSC

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.

 

93

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.10 ppb135ND - 9.70 ppb
20130.819 ppb166ND - 2.60 ppb
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND

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
2012-02-09AB80672ND
2012-05-10AB89446ND
2012-05-10AB89445ND
2012-05-10AB89444ND
2012-05-10AB89443ND
2012-08-07AB973854.90 ppb
2012-08-07AB973845.50 ppb
2012-08-07AB973885.00 ppb
2012-08-07AB973899.70 ppb
2012-11-151211567006ND
2012-11-151211567005ND
2012-11-1512115670072.20 ppb
2012-11-151211567008ND
2013-01-241301693015ND
2013-01-2413016930142.20 ppb
2013-01-2413016930132.00 ppb
2013-01-2413016930122.60 ppb
2013-05-081305345011ND
2013-05-081305345010ND
2013-05-081305345009ND
2013-05-081305345008ND
2013-08-01Q13048010032.10 ppb
2013-08-01Q13048010012.10 ppb
2013-08-01Q1304801002ND
2013-08-01Q1304801004ND
2013-10-14Q13088320042.10 ppb
2013-10-14Q1308832003ND
2013-10-14Q1308832002ND
2013-10-14Q1308832001ND
2014-02-10AC42076ND
2014-02-10AC42079ND
2014-02-10AC42080ND
2014-02-10AC42078ND
2014-04-30AC52493ND
2014-04-30AC52491ND
2014-04-30AC52492ND
2014-04-30AC52490ND
2014-08-05AC62195ND
2014-08-05AC62201ND
2014-08-05AC62198ND
2014-08-05AC62196ND
2014-11-12AC71905ND
2014-11-12AC71904ND
2014-11-12AC71902ND
2014-11-12AC71901ND
2015-03-24AC85835ND
2015-03-24AC85843ND
2015-03-24AC85841ND
2015-03-24AC85836ND
2015-05-18AC92282ND
2015-05-18AC92274ND
2015-05-18AC92292ND
2015-05-18AC92275ND
2015-08-20AD04830ND
2015-08-20AD04831ND
2015-08-20AD04828ND
2015-08-20AD04829ND
2015-10-05AD09404ND
2015-10-05AD09395ND
2015-10-05AD09396ND
2015-10-05AD09397ND
2016-01-14AD18195ND
2016-01-14AD18191ND
2016-01-14AD18189ND
2016-01-14AD18193ND
2016-04-06AD32023ND
2016-04-06AD32060ND
2016-04-06AD32022ND
2016-04-06AD32024ND
2016-08-05AD47231ND
2016-08-05AD47229ND
2016-08-05AD47232ND
2016-08-05AD47230ND
2016-10-11AD52961ND
2016-10-11AD52965ND
2016-10-11AD52964ND
2016-10-11AD52966ND
2017-01-30AD67499ND
2017-01-30AD67501ND
2017-01-30AD67497ND
2017-01-30AD67494ND
2017-04-06AD78738ND
2017-04-06AD78735ND
2017-04-06AD78742ND
2017-04-06AD78739ND
2017-07-12AD89059ND
2017-07-12AD89060ND
2017-07-12AD89063ND
2017-07-12AD89062ND
2017-11-21AE05540ND
2017-11-21AE05541ND
2017-11-21AE05542ND
2017-11-21AE05539ND