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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of La Villa

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

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND70ND
2017ND80ND
20180.613 ppb81ND - 4.90 ppb
2019ND80ND

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
2014-01-28AC40436ND
2014-04-23AC51511ND
2014-07-10AC59290ND
2014-12-08AC73883ND
2015-01-22AC77328ND
2015-06-09AC95131ND
2015-08-05AD02631ND
2015-10-21AD11308ND
2016-01-28AD20698ND
2016-04-28AD34617ND
2016-04-28AD34616ND
2016-07-12AD43997ND
2016-07-12AD44012ND
2016-12-05AD60279ND
2016-12-05AD60288ND
2017-02-08AD69547ND
2017-02-08AD69537ND
2017-04-20AD80348ND
2017-04-20AD80331ND
2017-08-01AD91567ND
2017-08-01AD91557ND
2017-11-01AE03189ND
2017-11-01AE03174ND
2018-01-31AE11480ND
2018-01-31AE11499ND
2018-04-12AE22282ND
2018-05-16AE265584.90 ppb
2018-08-14AE36862ND
2018-08-14AE36861ND
2018-10-09AE42942ND
2018-10-09AE42939ND
2019-03-01AE56873ND
2019-03-01AE56869ND
2019-05-23AE67946ND
2019-05-23AE67940ND
2019-08-22AE80165ND
2019-08-22AE80157ND
2019-10-01AE85318ND
2019-10-01AE85324ND