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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Little Thompson WD

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.506 ppb83ND - 1.88 ppb
20161.28 ppb1611ND - 2.86 ppb
20171.79 ppb1613ND - 3.00 ppb

ppb = parts per billion

All test results

Date Result
2015-08-181.88 ppb
2015-08-18ND
2015-08-18ND
2015-08-18ND
2015-11-041.11 ppb
2015-11-04ND
2015-11-04ND
2015-11-041.06 ppb
2016-02-242.00 ppb
2016-02-242.48 ppb
2016-02-241.87 ppb
2016-02-241.25 ppb
2016-05-03ND
2016-05-031.72 ppb
2016-05-032.86 ppb
2016-05-031.42 ppb
2016-08-171.50 ppb
2016-08-17ND
2016-08-172.10 ppb
2016-08-17ND
2016-11-17ND
2016-11-171.40 ppb
2016-11-171.90 ppb
2016-11-17ND
2017-02-082.00 ppb
2017-02-083.00 ppb
2017-02-082.90 ppb
2017-02-081.40 ppb
2017-05-241.70 ppb
2017-05-243.00 ppb
2017-05-243.00 ppb
2017-05-242.10 ppb
2017-08-081.20 ppb
2017-08-08ND
2017-08-082.20 ppb
2017-08-081.40 ppb
2017-11-14ND
2017-11-141.80 ppb
2017-11-14ND
2017-11-143.00 ppb