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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Town of Christiansburg

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
2013N/A00N/A
20140.538 ppb165ND - 2.30 ppb
20150.450 ppb164ND - 2.00 ppb
20160.919 ppb168ND - 2.20 ppb
20170.888 ppb1610ND - 2.30 ppb
20180.375 ppb165ND - 1.30 ppb
2019ND160ND

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
2014-01-22E140102025ND
2014-01-22E140102023ND
2014-01-22E140102028ND
2014-01-22E140102029ND
2014-04-22E140401172ND
2014-04-22E140401180ND
2014-04-22E140401165ND
2014-04-22E140401183ND
2014-07-21E1407005971.40 ppb
2014-07-21E1407005951.70 ppb
2014-07-21E1407006021.80 ppb
2014-07-21E1407005982.30 ppb
2014-10-20E141000179ND
2014-10-20E141000175ND
2014-10-20E141000174ND
2014-10-20E1410001801.40 ppb
2015-01-22VA010-DCLSND
2015-01-22VA010-DCLSND
2015-01-22VA010-DCLSND
2015-01-22VA010-DCLSND
2015-04-20VA010-DCLSND
2015-04-20VA010-DCLSND
2015-04-20VA010-DCLSND
2015-04-20VA010-DCLSND
2015-07-22VA010-DCLS1.90 ppb
2015-07-22VA010-DCLS2.00 ppb
2015-07-22VA010-DCLS1.50 ppb
2015-07-22VA010-DCLS1.80 ppb
2015-10-19VA010-DCLSND
2015-10-19VA010-DCLSND
2015-10-19VA010-DCLSND
2015-10-19VA010-DCLSND
2016-01-20E151202653ND
2016-01-20E151202655ND
2016-01-20E151202651ND
2016-01-20E151202650ND
2016-04-21E160302015ND
2016-04-21E160302016ND
2016-04-21E160302014ND
2016-04-21E160302018ND
2016-07-18E1607005951.40 ppb
2016-07-18E1607005961.80 ppb
2016-07-18E1607005992.00 ppb
2016-07-18E1607005932.20 ppb
2016-10-17E1609070012.20 ppb
2016-10-17E1609069961.80 ppb
2016-10-17E1609069991.70 ppb
2016-10-17E1609069981.60 ppb
2017-01-18E170101584ND
2017-01-18E161206554ND
2017-01-18E161206560ND
2017-01-18E1612065571.000 ppb
2017-04-17E1703052261.000 ppb
2017-04-17E170305227ND
2017-04-17E170305230ND
2017-04-17E1703052281.40 ppb
2017-07-19E1707025602.30 ppb
2017-07-19E170702563ND
2017-07-19E1707025661.40 ppb
2017-07-19E1707025512.20 ppb
2017-10-16E1710003821.000 ppb
2017-10-16E1710003851.20 ppb
2017-10-16E1710003791.30 ppb
2017-10-16E1710003801.40 ppb
2018-01-22E180101010ND
2018-01-22E180101008ND
2018-01-22E180101006ND
2018-01-22E180101004ND
2018-04-23E1803062851.30 ppb
2018-04-23E1803062791.20 ppb
2018-04-23E1803062811.10 ppb
2018-04-23E1803062831.20 ppb
2018-07-16E180608856ND
2018-07-16E180608855ND
2018-07-16E1806088511.20 ppb
2018-07-16E180608850ND
2018-10-22E181002431ND
2018-10-22E181002433ND
2018-10-22E181002435ND
2018-10-22E181002436ND
2019-01-23E181206350ND
2019-01-23E181206352ND
2019-01-23E181206356ND
2019-01-23E181206357ND
2019-04-23E190303074ND
2019-04-23E190303079ND
2019-04-23E190303078ND
2019-04-23E190303076ND
2019-07-24E190700200ND
2019-07-24E190700205ND
2019-07-24E190700203ND
2019-07-24E190700199ND
2019-10-21E191003675ND
2019-10-21E191003674ND
2019-10-21E191003673ND
2019-10-21E191003672ND