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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Amherst County Service Authority (ACSA)

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
20141.36 ppb1612ND - 2.90 ppb
20151.49 ppb1610ND - 3.10 ppb
20161.56 ppb1612ND - 2.90 ppb
20171.04 ppb169ND - 2.80 ppb
20181.24 ppb1612ND - 2.70 ppb
20191.01 ppb1610ND - 2.60 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
2014-02-12E131208519ND
2014-02-12E1312085231.10 ppb
2014-02-12E1312084661.20 ppb
2014-02-12E1312085211.60 ppb
2014-05-21E1403040692.70 ppb
2014-05-21E1403040712.90 ppb
2014-05-21E1403040651.80 ppb
2014-05-21E1403040732.60 ppb
2014-08-13E1406059851.70 ppb
2014-08-13E1406059821.60 ppb
2014-08-13E1406059871.90 ppb
2014-08-13E140605977ND
2014-11-19E1409026251.50 ppb
2014-11-19E1409025661.10 ppb
2014-11-19E140902618ND
2014-11-19E140902620ND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-05-13VA010-DCLS2.40 ppb
2015-05-13VA010-DCLS2.90 ppb
2015-05-13VA010-DCLS2.80 ppb
2015-05-13VA010-DCLS2.00 ppb
2015-08-12VA010-DCLS2.50 ppb
2015-08-12VA010-DCLS2.70 ppb
2015-08-12VA010-DCLS2.40 ppb
2015-08-12VA010-DCLS3.10 ppb
2015-11-18VA010-DCLS1.70 ppb
2015-11-18VA010-DCLS1.40 ppb
2015-11-18VA010-DCLSND
2015-11-18VA010-DCLSND
2016-02-10E151206719ND
2016-02-10E151206668ND
2016-02-10E1512067211.40 ppb
2016-02-10E151206670ND
2016-05-18E1603039881.50 ppb
2016-05-18E1603039892.10 ppb
2016-05-18E1603039832.50 ppb
2016-05-18E1603039852.70 ppb
2016-08-10E1606010352.40 ppb
2016-08-10E1606010292.80 ppb
2016-08-10E1606010332.90 ppb
2016-08-10E1606010342.90 ppb
2016-11-16E1609055221.20 ppb
2016-11-16E1609055201.000 ppb
2016-11-16E1609055211.60 ppb
2016-11-16E160905531ND
2017-02-08E161204501ND
2017-02-08E161204558ND
2017-02-08E161204502ND
2017-02-08E1612045511.30 ppb
2017-05-17E1703083081.70 ppb
2017-05-17E170308312ND
2017-05-17E170308248ND
2017-05-17E170308310ND
2017-08-16E1706072901.80 ppb
2017-08-16E1706072922.00 ppb
2017-08-16E1706072952.80 ppb
2017-08-16E1706072942.80 ppb
2017-11-15E1709033061.20 ppb
2017-11-15E1709033051.80 ppb
2017-11-15E170903303ND
2017-11-15E1709033701.20 ppb
2018-02-21E1712058961.20 ppb
2018-02-21E1712058941.40 ppb
2018-02-21E1712058921.70 ppb
2018-02-21E1712058902.00 ppb
2018-05-16E1803073742.10 ppb
2018-05-16E1803073152.00 ppb
2018-05-16E180307371ND
2018-05-16E180307373ND
2018-08-15E180605228ND
2018-08-15E1806052231.10 ppb
2018-08-15E1806052212.70 ppb
2018-08-15E1806052192.10 ppb
2018-11-14E180902601ND
2018-11-14E1809026121.40 ppb
2018-11-14E1809026131.10 ppb
2018-11-14E1809026641.000 ppb
2019-02-19E181207072ND
2019-02-19E181207074ND
2019-02-19E181207078ND
2019-02-19E181207133ND
2019-05-15E190305351ND
2019-05-15E1903053541.10 ppb
2019-05-15E1903053531.10 ppb
2019-05-15E1903053521.50 ppb
2019-09-17E1906094881.70 ppb
2019-09-17E1906094901.10 ppb
2019-09-17E1906094891.70 ppb
2019-09-17E1906094872.60 ppb
2019-11-20E1909019441.80 ppb
2019-11-20E1909019431.70 ppb
2019-11-20E1909019421.80 ppb
2019-11-20E190901941ND