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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Magna Water District

Trichloroacetic 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.

 

92

Samples

0

Samples exceeding legal limit (MCL)

62

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.03 ppb128ND - 6.92 ppb
20132.80 ppb1612ND - 6.46 ppb
20145.06 ppb1612ND - 13.3 ppb
20157.44 ppb1610ND - 18.1 ppb
20163.61 ppb168ND - 12.4 ppb
20174.17 ppb1612ND - 10.3 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for trichloroacetic acid was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Result
2012-05-294.26 ppb
2012-05-29ND
2012-05-293.65 ppb
2012-05-295.60 ppb
2012-08-28ND
2012-08-286.92 ppb
2012-08-284.88 ppb
2012-08-28ND
2012-11-26ND
2012-11-262.90 ppb
2012-11-265.40 ppb
2012-11-262.80 ppb
2013-02-264.66 ppb
2013-02-26ND
2013-02-263.16 ppb
2013-02-264.80 ppb
2013-05-283.26 ppb
2013-05-285.43 ppb
2013-05-282.20 ppb
2013-05-28ND
2013-08-262.83 ppb
2013-08-262.13 ppb
2013-08-261.11 ppb
2013-08-26ND
2013-11-255.31 ppb
2013-11-256.46 ppb
2013-11-253.43 ppb
2013-11-25ND
2014-02-25ND
2014-02-255.74 ppb
2014-02-256.79 ppb
2014-02-255.69 ppb
2014-05-2010.1 ppb
2014-05-204.21 ppb
2014-05-20ND
2014-05-2013.3 ppb
2014-08-255.43 ppb
2014-08-254.78 ppb
2014-08-255.24 ppb
2014-08-25ND
2014-11-184.73 ppb
2014-11-18ND
2014-11-189.85 ppb
2014-11-185.11 ppb
2015-02-238.68 ppb
2015-02-2411.7 ppb
2015-02-2411.7 ppb
2015-02-24ND
2015-05-26ND
2015-05-269.58 ppb
2015-05-2615.0 ppb
2015-05-268.92 ppb
2015-08-26ND
2015-08-2610.1 ppb
2015-08-268.28 ppb
2015-08-26ND
2015-11-23ND
2015-11-2317.0 ppb
2015-11-23ND
2015-11-2318.1 ppb
2016-02-23ND
2016-02-23ND
2016-02-235.89 ppb
2016-02-23ND
2016-05-31ND
2016-05-31ND
2016-05-317.33 ppb
2016-05-317.60 ppb
2016-08-23ND
2016-08-23ND
2016-08-2312.4 ppb
2016-08-238.55 ppb
2016-11-219.49 ppb
2016-11-213.46 ppb
2016-11-213.01 ppb
2016-11-21ND
2017-02-225.68 ppb
2017-02-22ND
2017-02-224.87 ppb
2017-02-222.93 ppb
2017-05-2210.3 ppb
2017-05-228.73 ppb
2017-05-229.86 ppb
2017-05-22ND
2017-08-216.24 ppb
2017-08-213.44 ppb
2017-08-216.63 ppb
2017-08-21ND
2017-11-20ND
2017-11-202.22 ppb
2017-11-202.95 ppb
2017-11-202.81 ppb