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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Two Rivers Utilities

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

191

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20146.81 ppb32321.90 ppb - 11.0 ppb
20152.92 ppb3231ND - 4.60 ppb
201610.2 ppb32327.30 ppb - 13.0 ppb
201710.0 ppb32325.10 ppb - 22.0 ppb
201816.3 ppb32325.90 ppb - 25.0 ppb
201918.1 ppb323211.0 ppb - 26.0 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
2014-01-2729636458.00 ppb
2014-01-2729636469.20 ppb
2014-01-2729636479.70 ppb
2014-01-2729636488.90 ppb
2014-01-2729636497.20 ppb
2014-01-2729636509.80 ppb
2014-01-27296365111.0 ppb
2014-01-2729636529.10 ppb
2014-04-23301373211.0 ppb
2014-04-23301373311.0 ppb
2014-04-23301373411.0 ppb
2014-04-23301373511.0 ppb
2014-04-2330137368.60 ppb
2014-04-2330137379.10 ppb
2014-04-23301373811.0 ppb
2014-04-23301373911.0 ppb
2014-07-2230676374.70 ppb
2014-07-2230676385.30 ppb
2014-07-2230676395.10 ppb
2014-07-2230676404.40 ppb
2014-07-2230676414.10 ppb
2014-07-2230676425.90 ppb
2014-07-2230676436.70 ppb
2014-07-2230676445.40 ppb
2014-10-2331281152.50 ppb
2014-10-2331281162.60 ppb
2014-10-2331281172.70 ppb
2014-10-2331281182.20 ppb
2014-10-2331281191.90 ppb
2014-10-2331281202.20 ppb
2014-10-2331281212.80 ppb
2014-10-2331281222.90 ppb
2015-01-222.20 ppb
2015-01-222.70 ppb
2015-01-222.40 ppb
2015-01-222.10 ppb
2015-01-222.00 ppb
2015-01-222.10 ppb
2015-01-222.90 ppb
2015-01-22ND
2015-04-233.80 ppb
2015-04-233.40 ppb
2015-04-233.50 ppb
2015-04-234.00 ppb
2015-04-234.60 ppb
2015-04-234.00 ppb
2015-04-233.70 ppb
2015-04-233.30 ppb
2015-07-234.00 ppb
2015-07-233.40 ppb
2015-07-233.70 ppb
2015-07-233.50 ppb
2015-07-233.00 ppb
2015-07-234.00 ppb
2015-07-234.40 ppb
2015-07-233.50 ppb
2015-10-262.20 ppb
2015-10-262.30 ppb
2015-10-261.90 ppb
2015-10-261.90 ppb
2015-10-261.70 ppb
2015-10-261.80 ppb
2015-10-263.30 ppb
2015-10-262.00 ppb
2016-01-2133894879.40 ppb
2016-01-21338948811.0 ppb
2016-01-21338948910.00 ppb
2016-01-21338949010.00 ppb
2016-01-2133894918.10 ppb
2016-01-2133894929.70 ppb
2016-01-21338949312.0 ppb
2016-01-21338949411.0 ppb
2016-04-21343540311.0 ppb
2016-04-21343540412.0 ppb
2016-04-21343540511.0 ppb
2016-04-2134354069.50 ppb
2016-04-2134354077.80 ppb
2016-04-21343540810.00 ppb
2016-04-21343540913.0 ppb
2016-04-21343541011.0 ppb
2016-07-2135011629.10 ppb
2016-07-21350116310.00 ppb
2016-07-21350116411.0 ppb
2016-07-2135011657.30 ppb
2016-07-21350116611.0 ppb
2016-07-21350116713.0 ppb
2016-07-21350116811.0 ppb
2016-07-21350116910.00 ppb
2016-10-2035693479.70 ppb
2016-10-2035693489.50 ppb
2016-10-20356934911.0 ppb
2016-10-2035693508.40 ppb
2016-10-2035693518.70 ppb
2016-10-2035693527.60 ppb
2016-10-20356935311.0 ppb
2016-10-20356935410.00 ppb
2017-01-2336257667.60 ppb
2017-01-2336257678.40 ppb
2017-01-2336257688.10 ppb
2017-01-2336257696.90 ppb
2017-01-2336257706.20 ppb
2017-01-2336257716.80 ppb
2017-01-2336257728.40 ppb
2017-01-2336257738.30 ppb
2017-04-2036794616.80 ppb
2017-04-2036794626.80 ppb
2017-04-2036794637.20 ppb
2017-04-2036794646.40 ppb
2017-04-2036794655.10 ppb
2017-04-2036794666.30 ppb
2017-04-2036794678.20 ppb
2017-04-2036794686.60 ppb
2017-07-17373437817.0 ppb
2017-07-17373437918.0 ppb
2017-07-17373438022.0 ppb
2017-07-17373438117.0 ppb
2017-07-17373438218.0 ppb
2017-07-17373438317.0 ppb
2017-07-17373438419.0 ppb
2017-07-17373438518.0 ppb
2017-10-2338054737.40 ppb
2017-10-2338054747.80 ppb
2017-10-2338054757.80 ppb
2017-10-2338054767.10 ppb
2017-10-2338054776.10 ppb
2017-10-2338054788.50 ppb
2017-10-2338054798.80 ppb
2017-10-2338054807.70 ppb
2018-01-243858783 7.20 ppb
2018-01-243858784 11.0 ppb
2018-01-243858785 8.60 ppb
2018-01-243858786 7.00 ppb
2018-01-243858787 5.90 ppb
2018-01-243858788 8.80 ppb
2018-01-243858789 12.0 ppb
2018-01-243858790 9.00 ppb
2018-04-303924228 15.0 ppb
2018-04-303924229 15.0 ppb
2018-04-303924230 17.0 ppb
2018-04-303924231 15.0 ppb
2018-04-303924232 14.0 ppb
2018-04-303924233 17.0 ppb
2018-04-303924234 17.0 ppb
2018-04-303924235 18.0 ppb
2018-07-173991820 22.0 ppb
2018-07-173991821 23.0 ppb
2018-07-173991822 25.0 ppb
2018-07-173991823 21.0 ppb
2018-07-173991824 20.0 ppb
2018-07-173991825 19.0 ppb
2018-07-173991826 25.0 ppb
2018-07-173991827 22.0 ppb
2018-10-084082369 19.0 ppb
2018-10-084082371 21.0 ppb
2018-10-084082373 18.0 ppb
2018-10-084082375 18.0 ppb
2018-10-084082377 18.0 ppb
2018-10-084082379 17.0 ppb
2018-10-084082381 16.0 ppb
2018-10-084082383 19.0 ppb
2019-01-164175589 19.0 ppb
2019-01-164175590 21.0 ppb
2019-01-164175591 16.0 ppb
2019-01-164175592 15.0 ppb
2019-01-164175593 17.0 ppb
2019-01-164175594 19.0 ppb
2019-01-164175595 18.0 ppb
2019-01-164175596 18.0 ppb
2019-04-034248405 17.0 ppb
2019-04-034248406 22.0 ppb
2019-04-034248407 20.0 ppb
2019-04-034248408 15.0 ppb
2019-04-034248409 17.0 ppb
2019-04-034248410 20.0 ppb
2019-04-034248411 19.0 ppb
2019-04-034248412 17.0 ppb
2019-07-104349054 22.0 ppb
2019-07-104349056 26.0 ppb
2019-07-104349058 23.0 ppb
2019-07-104349060 22.0 ppb
2019-07-104349062 22.0 ppb
2019-07-104349064 19.0 ppb
2019-07-104349066 21.0 ppb
2019-07-104349068 20.0 ppb
2019-10-084449400 14.0 ppb
2019-10-084449402 13.0 ppb
2019-10-084449404 18.0 ppb
2019-10-084449406 14.0 ppb
2019-10-084449408 12.0 ppb
2019-10-084449410 11.0 ppb
2019-10-084449412 16.0 ppb
2019-10-084449414 17.0 ppb