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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Town of Forest City

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.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201412.9 ppb16165.90 ppb - 20.0 ppb
201511.4 ppb16167.60 ppb - 15.0 ppb
201612.5 ppb16168.60 ppb - 24.0 ppb
201710.4 ppb16163.20 ppb - 16.0 ppb
201813.3 ppb16167.10 ppb - 20.0 ppb
201911.1 ppb16164.70 ppb - 22.0 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
2014-03-20299562110.00 ppb
2014-03-2029956227.90 ppb
2014-03-2029956237.50 ppb
2014-03-2029956247.90 ppb
2014-06-23305094718.0 ppb
2014-06-23305094918.0 ppb
2014-06-23305095117.0 ppb
2014-06-23305094516.0 ppb
2014-09-17310624717.0 ppb
2014-09-17310624918.0 ppb
2014-09-17310625117.0 ppb
2014-09-17310625320.0 ppb
2014-12-1631568575.90 ppb
2014-12-1631568617.70 ppb
2014-12-1631568596.90 ppb
2014-12-16315685512.0 ppb
2015-03-187.60 ppb
2015-03-188.10 ppb
2015-03-188.30 ppb
2015-03-188.10 ppb
2015-06-1615.0 ppb
2015-06-1611.0 ppb
2015-06-1612.0 ppb
2015-06-1614.0 ppb
2015-09-1515.0 ppb
2015-09-1512.0 ppb
2015-09-1512.0 ppb
2015-09-1511.0 ppb
2015-12-1511.0 ppb
2015-12-1511.0 ppb
2015-12-1512.0 ppb
2015-12-1515.0 ppb
2016-03-1534150938.60 ppb
2016-03-1534150959.70 ppb
2016-03-1534150919.00 ppb
2016-03-15341508911.0 ppb
2016-06-21347578416.0 ppb
2016-06-21347578211.0 ppb
2016-06-21347578012.0 ppb
2016-06-21347577811.0 ppb
2016-09-19354882314.0 ppb
2016-09-19354882511.0 ppb
2016-09-19354882712.0 ppb
2016-09-19354882915.0 ppb
2016-12-20360833724.0 ppb
2016-12-20360833910.00 ppb
2016-12-20360834110.00 ppb
2016-12-20360834315.0 ppb
2017-03-23366049611.0 ppb
2017-03-23366049012.0 ppb
2017-03-23366049211.0 ppb
2017-03-23366049411.0 ppb
2017-06-20371762611.0 ppb
2017-06-20371762812.0 ppb
2017-06-20371763012.0 ppb
2017-06-20371763211.0 ppb
2017-09-19378224614.0 ppb
2017-09-19378224411.0 ppb
2017-09-19378224214.0 ppb
2017-09-19378224016.0 ppb
2017-12-2138429677.90 ppb
2017-12-2138429694.30 ppb
2017-12-2138429713.20 ppb
2017-12-2138429734.50 ppb
2018-03-223895989 7.10 ppb
2018-03-223895987 7.50 ppb
2018-03-223895985 7.60 ppb
2018-03-223895983 8.90 ppb
2018-06-193966678 19.0 ppb
2018-06-193966672 20.0 ppb
2018-06-193966674 16.0 ppb
2018-06-193966676 15.0 ppb
2018-09-194061710 17.0 ppb
2018-09-194061708 17.0 ppb
2018-09-194061706 19.0 ppb
2018-09-194061704 17.0 ppb
2018-12-184154654 12.0 ppb
2018-12-184154656 11.0 ppb
2018-12-184154658 9.00 ppb
2018-12-184154660 9.70 ppb
2019-03-264238736 6.10 ppb
2019-03-264238738 4.70 ppb
2019-03-264238740 4.80 ppb
2019-03-264238742 5.20 ppb
2019-06-264337454 14.0 ppb
2019-06-264337460 11.0 ppb
2019-06-264337458 10.00 ppb
2019-06-264337456 8.80 ppb
2019-09-174425181 22.0 ppb
2019-09-174425185 16.0 ppb
2019-09-174425183 17.0 ppb
2019-09-174425179 13.0 ppb
2019-12-114511852 10.00 ppb
2019-12-114511850 7.00 ppb
2019-12-114511848 8.10 ppb
2019-12-114511846 20.0 ppb