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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

City of South Houston

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
2012ND130ND
2013ND160ND
2014ND160ND
20150.650 ppb164ND - 3.20 ppb
20160.956 ppb164ND - 4.70 ppb
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
2012-02-06AB80238ND
2012-05-18AB90295ND
2012-05-18AB90299ND
2012-05-18AB90309ND
2012-05-18AB90296ND
2012-07-06AB94704ND
2012-07-06AB94705ND
2012-07-06AB94687ND
2012-07-06AB94688ND
2012-10-12AC03237ND
2012-10-12AC03225ND
2012-10-12AC03226ND
2012-10-12AC03238ND
2013-01-14AC07594ND
2013-01-14AC07595ND
2013-01-14AC07601ND
2013-01-14AC07600ND
2013-04-02AC15507ND
2013-04-02AC15497ND
2013-04-02AC15500ND
2013-04-02AC15503ND
2013-07-19AC25375ND
2013-07-19AC25370ND
2013-07-19AC25376ND
2013-07-19AC25339ND
2013-10-24AC33260ND
2013-10-24AC33253ND
2013-10-24AC33239ND
2013-10-24AC33238ND
2014-02-14AC43023ND
2014-02-14AC43070ND
2014-02-14AC43068ND
2014-02-14AC43091ND
2014-04-07AC49612ND
2014-04-07AC49615ND
2014-04-07AC49582ND
2014-06-06AC56298ND
2014-08-11AC62901ND
2014-08-11AC62929ND
2014-08-11AC62900ND
2014-08-11AC62902ND
2014-11-24AC72787ND
2014-11-24AC72782ND
2014-11-24AC72720ND
2014-11-24AC72786ND
2015-01-21AC77203ND
2015-01-21AC77209ND
2015-01-21AC77204ND
2015-01-21AC77202ND
2015-06-12AC959072.10 ppb
2015-06-12AC959272.60 ppb
2015-06-12AC959002.50 ppb
2015-06-12AC958993.20 ppb
2015-07-20AD00121ND
2015-07-20AD00077ND
2015-07-20AD00105ND
2015-07-20AD00100ND
2015-10-06AD09590ND
2015-10-06AD09585ND
2015-10-06AD09592ND
2015-10-06AD09581ND
2016-01-14AD18162ND
2016-01-14AD181643.00 ppb
2016-01-14AD18163ND
2016-01-14AD181653.20 ppb
2016-04-08AD32541ND
2016-04-08AD325464.40 ppb
2016-04-08AD32528ND
2016-04-08AD32535ND
2016-07-11AD43555ND
2016-07-11AD43516ND
2016-07-11AD43522ND
2016-07-11AD435154.70 ppb
2016-10-07AD52794ND
2016-10-07AD52796ND
2016-10-07AD52795ND
2016-10-07AD52798ND
2017-01-06AD63561ND
2017-01-06AD63562ND
2017-01-06AD63563ND
2017-01-06AD63560ND
2017-04-07AD78911ND
2017-04-07AD78913ND
2017-04-07AD78912ND
2017-04-07AD78910ND
2017-07-14AD89414ND
2017-07-14AD89419ND
2017-07-14AD89415ND
2017-07-14AD89417ND
2017-10-17AE01071ND
2017-10-17AE01060ND
2017-10-17AE01056ND
2017-10-17AE01059ND