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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Marietta City PWS

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.750 ppb169ND - 1.90 ppb
20150.138 ppb162ND - 1.20 ppb
20161.14 ppb168ND - 3.10 ppb
20170.706 ppb168ND - 1.90 ppb
20180.338 ppb164ND - 1.70 ppb
20190.144 ppb162ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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.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 Lab ID Result
2014-01-0814-10291-07ND
2014-01-0814-10291-06ND
2014-01-0814-10291-051.10 ppb
2014-01-0814-10291-041.000 ppb
2014-04-0814-14179-04ND
2014-04-0814-14179-03ND
2014-04-0814-14179-02ND
2014-04-0814-14179-01ND
2014-07-0814-18856-021.40 ppb
2014-07-0814-18856-011.40 ppb
2014-07-0814-18856-031.40 ppb
2014-07-0814-18856-041.20 ppb
2014-10-0814-23916-011.40 ppb
2014-10-0814-23916-021.90 ppb
2014-10-0814-23916-031.20 ppb
2014-10-0814-23916-04ND
2015-01-1215-10459-04ND
2015-01-1215-10459-01ND
2015-01-1215-10459-02ND
2015-01-1215-10459-03ND
2015-04-0815-14368-04ND
2015-04-0815-14368-03ND
2015-04-0815-14368-02ND
2015-04-0815-14368-01ND
2015-07-0815-19402-03ND
2015-07-0815-19402-021.000 ppb
2015-07-0815-19402-011.20 ppb
2015-07-0815-19402-04ND
2015-10-0815-24833-01ND
2015-10-0815-24833-02ND
2015-10-0815-24833-03ND
2015-10-0815-24833-04ND
2016-01-1316-10733-02ND
2016-01-1316-10733-03ND
2016-01-1416-10733-01ND
2016-01-1416-10733-04ND
2016-04-1216-15290-012.30 ppb
2016-04-1216-15290-022.20 ppb
2016-04-1216-15290-032.00 ppb
2016-04-1216-15290-042.20 ppb
2016-07-1116-20616-013.10 ppb
2016-07-1116-20616-022.50 ppb
2016-07-1116-20616-032.10 ppb
2016-07-1116-20616-041.90 ppb
2016-10-1116-27295-01ND
2016-10-1116-27295-02ND
2016-10-1116-27295-03ND
2016-10-1116-27295-04ND
2017-01-0917-10554-01ND
2017-01-0917-10554-04ND
2017-01-0917-10554-02ND
2017-01-0917-10554-03ND
2017-04-1217-16333-021.90 ppb
2017-04-1217-16333-031.70 ppb
2017-04-1217-16333-041.60 ppb
2017-04-1217-16333-011.80 ppb
2017-07-1017-22489-011.10 ppb
2017-07-1017-22489-021.20 ppb
2017-07-1017-22489-031.000 ppb
2017-07-1017-22489-04ND
2017-10-0917-29596-04ND
2017-10-0917-29596-03ND
2017-10-0917-29596-021.000 ppb
2017-10-0917-29596-01ND
2018-01-0918-10806-01ND
2018-01-0918-10806-02ND
2018-01-0918-10806-03ND
2018-01-0918-10806-04ND
2018-04-0918-16486-011.70 ppb
2018-04-0918-16486-021.40 ppb
2018-04-0918-16486-031.10 ppb
2018-04-0918-16486-04ND
2018-07-0918-23954-04ND
2018-07-0918-23954-021.20 ppb
2018-07-0918-23954-01ND
2018-07-0918-23954-03ND
2018-10-0818-31986-16ND
2018-10-0818-31986-17ND
2018-10-0818-31986-18ND
2018-10-0818-31986-19ND
2019-01-0819-10522-01ND
2019-01-0819-10522-02ND
2019-01-0819-10522-03ND
2019-01-0819-10522-04ND
2019-04-0819-16907-02ND
2019-04-0819-16907-04ND
2019-04-0819-16907-03ND
2019-04-0819-16907-01ND
2019-07-2319-25760-011.10 ppb
2019-07-2319-25760-021.20 ppb
2019-07-2319-25760-03ND
2019-07-2319-25760-04ND
2019-10-0819-32589-01ND
2019-10-0819-32589-02ND
2019-10-0819-32589-03ND
2019-10-0819-32589-04ND