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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Altavista, Town of

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.700 ppb83ND - 2.40 ppb
20152.00 ppb83ND - 9.97 ppb
20161.52 ppb86ND - 2.58 ppb
20172.49 ppb85ND - 11.5 ppb
20181.42 ppb86ND - 2.74 ppb
20190.931 ppb85ND - 2.37 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
2014-03-26E1312036481.10 ppb
2014-03-26E131203650ND
2014-06-10E1403037232.40 ppb
2014-06-10E140303704ND
2014-09-16E1406065202.10 ppb
2014-09-16E140606507ND
2014-12-10E140900884ND
2014-12-10E140900868ND
2015-03-11VA010-DCLSND
2015-03-11VA010-DCLSND
2015-06-03VA010-DCLSND
2015-06-03VA010-DCLSND
2015-09-1000281-REI CONSUL9.97 ppb
2015-09-1000281-REI CONSUL4.97 ppb
2015-12-1000281-REI CONSUL1.03 ppb
2015-12-1000281-REI CONSULND
2016-03-1016031498-10AND
2016-03-1016031498-08A1.76 ppb
2016-06-1616062118-11AND
2016-06-1616062118-10A2.58 ppb
2016-09-0616090419-11A2.16 ppb
2016-09-0616090419-13A1.55 ppb
2016-12-0616121241-03A2.30 ppb
2016-12-0616121241-01A1.82 ppb
2017-03-0717030889-11A1.25 ppb
2017-03-0717030889-12A11.5 ppb
2017-06-0817061284-11A2.00 ppb
2017-06-0817061284-12AND
2017-09-0517090389-15A3.18 ppb
2017-09-0517090389-13AND
2017-12-0517120510-02A1.95 ppb
2017-12-0517120506-03AND
2018-03-0618030916-13A1.46 ppb
2018-03-0618030915-02A1.20 ppb
2018-06-0518060505-02A2.74 ppb
2018-06-0518060506-03A2.39 ppb
2018-09-0418090319-04A2.40 ppb
2018-09-0418090319=02AND
2018-12-0418120531-12AND
2018-12-0418120531-14A1.18 ppb
2019-03-0519030486-01A0.758 ppb
2019-03-0519030486-02A0.877 ppb
2019-06-0419060316-03A2.14 ppb
2019-06-0419060316-04A2.37 ppb
2019-09-0319090136-02AND
2019-09-0319090136-05AND
2019-12-1673118960041.30 ppb
2019-12-167311896002ND