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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Harris County FWSD 51

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
20152.38 ppb167ND - 8.50 ppb
20161.45 ppb167ND - 4.30 ppb
2017ND160ND
2018ND160ND
20193.06 ppb169ND - 12.6 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
2014-02-21AC44221ND
2014-02-21AC44255ND
2014-02-21AC44253ND
2014-02-21AC44224ND
2014-05-22AC55109ND
2014-05-22AC55091ND
2014-05-22AC55088ND
2014-05-22AC55087ND
2014-08-15AC64101ND
2014-08-15AC64177ND
2014-08-15AC64099ND
2014-08-15AC64176ND
2014-11-14AC72176ND
2014-11-14AC72113ND
2014-11-14AC72116ND
2014-11-14AC72148ND
2015-01-21AC77187ND
2015-01-21AC77181ND
2015-01-21AC77172ND
2015-01-21AC77167ND
2015-04-15AC883302.60 ppb
2015-04-15AC883388.50 ppb
2015-04-15AC883477.70 ppb
2015-04-15AC883447.30 ppb
2015-07-29AD014753.70 ppb
2015-07-29AD01484ND
2015-07-29AD01489ND
2015-07-29AD01486ND
2015-12-04AD15713ND
2015-12-04AD156543.90 ppb
2015-12-04AD15660ND
2015-12-04AD156534.40 ppb
2016-01-25AD19626ND
2016-01-25AD19657ND
2016-01-25AD196582.80 ppb
2016-01-25AD196522.60 ppb
2016-04-20AD336162.80 ppb
2016-04-20AD33600ND
2016-04-20AD33604ND
2016-04-20AD33615ND
2016-07-15AD445174.30 ppb
2016-07-15AD445073.40 ppb
2016-07-15AD445063.80 ppb
2016-07-15AD444903.50 ppb
2016-12-16AD62559ND
2016-12-16AD62561ND
2016-12-16AD62564ND
2016-12-16AD62554ND
2017-02-06AD68696ND
2017-02-06AD68709ND
2017-02-06AD68708ND
2017-02-06AD68695ND
2017-04-28AD81806ND
2017-04-28AD81811ND
2017-04-28AD81810ND
2017-04-28AD81809ND
2017-07-07AD88620ND
2017-07-07AD88626ND
2017-07-07AD88628ND
2017-07-07AD88621ND
2017-10-27AE02675ND
2017-10-27AE02674ND
2017-10-27AE02680ND
2017-10-27AE02673ND
2018-02-08AE12961ND
2018-02-08AE12972ND
2018-02-08AE12966ND
2018-02-08AE12975ND
2018-05-07AE25266ND
2018-05-07AE25290ND
2018-05-07AE25287ND
2018-05-07AE25292ND
2018-08-23AE38403ND
2018-08-23AE38400ND
2018-08-23AE38401ND
2018-08-23AE38402ND
2018-10-25AE44603ND
2018-10-25AE44597ND
2018-10-25AE44601ND
2018-10-25AE44604ND
2019-01-14AE495453.60 ppb
2019-01-14AE49543ND
2019-01-14AE4954612.6 ppb
2019-01-14AE495443.10 ppb
2019-04-23AE63371ND
2019-04-23AE63374ND
2019-04-23AE63378ND
2019-04-23AE633502.40 ppb
2019-07-22AE752527.60 ppb
2019-07-22AE75246ND
2019-07-22AE75248ND
2019-07-22AE75250ND
2019-10-03AE856344.30 ppb
2019-10-03AE856405.00 ppb
2019-10-03AE856626.40 ppb
2019-10-03AE856603.90 ppb