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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Amawalk-shenorock Water District

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

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.188 ppb81ND - 1.50 ppb
2015ND80ND
2016ND80ND
20174.25 ppb84ND - 11.3 ppb
20180.636 ppb104ND - 2.10 ppb
20190.789 ppb84ND - 1.71 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
2014-01-16AQ00910DBPND
2014-01-16AQ00909DBPND
2014-05-19AQ09150DBPND
2014-05-19AQ09149DBPND
2014-08-18AQ17044DBPND
2014-08-18AQ17043DBPND
2014-11-19AQ23911 DBP1.50 ppb
2014-11-19AQ23910 DBPND
2015-01-26AR01735 DBPND
2015-01-26AR01734 DBPND
2015-05-18AR10117 DBPND
2015-05-18AR10116 DBPND
2015-08-19420-94174-1 DBPND
2015-08-19420-94174-2 DBPND
2015-11-16AR24505 DBPND
2015-11-16AR24504 DBPND
2016-01-20AS01177 DBPND
2016-01-20AS01178 DBPND
2016-05-17AS10139 DBPND
2016-05-17AS10140 DBPND
2016-08-17AS17754 DBPND
2016-08-17AS17753 DBPND
2016-11-16AS24347 DBPND
2016-11-16AS24348 DBPND
2017-02-15AT03051 DBP10.3 ppb
2017-02-15AT03050 DBP6.79 ppb
2017-05-08AT08942-DBP211.3 ppb
2017-05-08AT08941-DBP25.61 ppb
2017-08-15AT17189-DBP2ND
2017-08-15AT17188-DBP2ND
2017-11-15AT24048-DBP2ND
2017-11-15AT24047-DBP2ND
2018-02-12AU02917-DBP2ND
2018-02-12AU02917 DBP2ND
2018-02-12AU2918 DBP2ND
2018-02-12AU02918-DBP2ND
2018-05-08AU09380-DBP21.55 ppb
2018-05-08AU09381-DBP22.10 ppb
2018-08-13AU17296-DBP21.48 ppb
2018-08-13AU17300-DBP2ND
2018-11-13AU24507-DBP21.23 ppb
2018-11-13AU24506-DBP2ND
2019-02-12AV02992-DBP21.39 ppb
2019-02-12AV02993-DBP21.71 ppb
2019-05-08AV09343DBP21.66 ppb
2019-05-08AV09342DBP2ND
2019-08-08AV16848-DBP2ND
2019-08-08AV16847-DBP21.55 ppb
2019-11-12AV23856-DBP2ND
2019-11-12AV23857-DBP2ND