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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Rockingham County - 220 Corridor

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

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
20172.28 ppb41ND - 9.10 ppb
20181.13 ppb42ND - 2.30 ppb
20191.28 ppb52ND - 3.70 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
2014-03-1392193154001DIS-2ND
2014-06-1392205272001DIS-2ND
2014-09-1792217717001TTH-2ND
2014-12-1392229626001TTH-2ND
2015-03-10ND
2015-06-10ND
2015-09-08ND
2015-12-30ND
2016-03-1792290438001TTH-2ND
2016-06-0992300831002TTHND
2016-09-1492312299002TTHND
2016-12-1592323449001TTH-2ND
2017-03-1492333381001TTHND
2017-06-2192345182001TTH-29.10 ppb
2017-09-2192356045001TTHND
2017-12-1492367070001TTHND
2018-03-1392376578002TTH 2.30 ppb
2018-06-1492388478001TTH ND
2018-09-1192398875001TTH ND
2018-12-1392410603001 2.20 ppb
2019-02-1492417694001_3770ND
2019-03-2292422429001_37702.70 ppb
2019-06-1392432915001_3770ND
2019-10-1792449976001_37703.70 ppb
2019-12-1692457514001_3770ND