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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Central Wy Reg Water Sys Jpb

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

 

171

Samples

0

Samples exceeding legal limit (MCL)

155

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.23 ppb2718ND - 4.30 ppb
20151.29 ppb3633ND - 3.20 ppb
20161.31 ppb3635ND - 3.60 ppb
20171.52 ppb3634ND - 2.50 ppb
20181.41 ppb3635ND - 2.60 ppb
2019N/A00N/A

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
2014-04-08C14040258-001B0.780 ppb
2014-04-08C14040258-002B1.90 ppb
2014-04-08C14040258-003B2.20 ppb
2014-04-08C14040258-004B1.10 ppb
2014-04-08C14040258-005B0.630 ppb
2014-04-08C14040258-006B0.900 ppb
2014-04-08C14040258-007B0.660 ppb
2014-04-08C14040258-008A0.970 ppb
2014-04-08C14040258-010A0.640 ppb
2014-07-08C14070272-001BND
2014-07-08C14070272-002BND
2014-07-08C14070272-003BND
2014-07-08C14070272-004BND
2014-07-08C14070272-005BND
2014-07-08C14070272-006BND
2014-07-08C14070272-007BND
2014-07-08C14070272-008AND
2014-07-08C14070272-010AND
2014-10-07C14100434-001B2.30 ppb
2014-10-07C14100434-002B3.50 ppb
2014-10-07C14100434-003B0.990 ppb
2014-10-07C14100434-004B2.30 ppb
2014-10-07C14100434-005B2.20 ppb
2014-10-07C14100434-006B4.30 ppb
2014-10-07C14100434-007B2.00 ppb
2014-10-07C14100434-008A3.70 ppb
2014-10-07C14100434-010A2.20 ppb
2015-01-06C15010069-001B1.50 ppb
2015-01-06C15010069-002B1.80 ppb
2015-01-06C15010069-003B3.20 ppb
2015-01-06C15010069-004B1.30 ppb
2015-01-06C15010069-005B1.40 ppb
2015-01-06C15010069-006B1.20 ppb
2015-01-06C15010069-007B1.40 ppb
2015-01-06C15010069-008A1.30 ppb
2015-01-06C15010069-010A1.40 ppb
2015-04-07C15040208-001B1.50 ppb
2015-04-07C15040208-002B1.20 ppb
2015-04-07C15040208-004B1.60 ppb
2015-04-07C15040208-005B1.50 ppb
2015-04-07C15040208-006B1.60 ppb
2015-04-07C15040208-007B1.50 ppb
2015-04-07C15040208-008A1.60 ppb
2015-04-07C15040208-010A1.60 ppb
2015-04-15C15040496-001A2.20 ppb
2015-07-07C15070202-001B1.000 ppb
2015-07-07C15070202-002B1.20 ppb
2015-07-07C15070202-003BND
2015-07-07C15070202-004B1.000 ppb
2015-07-07C15070202-005B1.20 ppb
2015-07-07C15070202-006BND
2015-07-07C15070202-007B0.700 ppb
2015-07-07C15070202-008AND
2015-07-07C15070202-010A0.860 ppb
2015-10-06C15100213-001B1.90 ppb
2015-10-06C15100213-002B1.40 ppb
2015-10-06C15100213-003B0.670 ppb
2015-10-06C15100213-004B2.40 ppb
2015-10-06C15100213-005B0.760 ppb
2015-10-06C15100213-006B1.000 ppb
2015-10-06C15100213-007B1.30 ppb
2015-10-06C15100213-008A0.870 ppb
2015-10-06C15100213-010A1.20 ppb
2016-01-05C16010071-001B1.30 ppb
2016-01-05C16010071-002B1.60 ppb
2016-01-05C16010071-003BND
2016-01-05C16010071-004B1.30 ppb
2016-01-05C16010071-005B1.50 ppb
2016-01-05C16010071-006B1.40 ppb
2016-01-05C16010071-007B1.30 ppb
2016-01-05C16010071-008A1.60 ppb
2016-01-05C16010071-010A1.30 ppb
2016-04-05C16040146-001B1.40 ppb
2016-04-05C16040146-002B1.30 ppb
2016-04-05C16040146-003B1.40 ppb
2016-04-05C16040146-004B1.40 ppb
2016-04-05C16040146-005B1.40 ppb
2016-04-05C16040146-006B1.20 ppb
2016-04-05C16040146-007B1.20 ppb
2016-04-05C16040146-008A1.40 ppb
2016-04-05C16040146-010A1.20 ppb
2016-07-05C16070073-001B1.10 ppb
2016-07-05C16070073-002B1.50 ppb
2016-07-05C16070073-003B1.000 ppb
2016-07-05C16070073-004B1.20 ppb
2016-07-05C16070073-005B0.590 ppb
2016-07-05C16070073-006B0.650 ppb
2016-07-05C16070073-007B0.570 ppb
2016-07-05C16070073-008A0.650 ppb
2016-07-05C16070073-010A0.540 ppb
2016-10-05C16100154-001B2.00 ppb
2016-10-05C16100154-002B3.60 ppb
2016-10-05C16100154-003B0.580 ppb
2016-10-05C16100154-004B1.70 ppb
2016-10-05C16100154-005B1.70 ppb
2016-10-05C16100154-006B1.80 ppb
2016-10-05C16100154-007B1.70 ppb
2016-10-05C16100154-008B1.50 ppb
2016-10-05C16100154-010B1.70 ppb
2017-01-04C17010096-001B1.40 ppb
2017-01-04C17010096-002B2.50 ppb
2017-01-04C17010096-003B2.30 ppb
2017-01-04C17010096-004B1.40 ppb
2017-01-04C17010096-005B1.20 ppb
2017-01-04C17010096-006B1.30 ppb
2017-01-04C17010096-007B1.30 ppb
2017-01-04C17010096-008A1.40 ppb
2017-01-04C17010096-010A1.20 ppb
2017-04-04C17040071-001B1.60 ppb
2017-04-04C17040071-002B1.90 ppb
2017-04-04C17040071-003B1.70 ppb
2017-04-04C17040071-004B1.70 ppb
2017-04-04C17040071-005B1.70 ppb
2017-04-04C17040071-006B1.70 ppb
2017-04-04C17040071-007B1.70 ppb
2017-04-04C17040071-008A1.50 ppb
2017-04-04C17040071-010A1.70 ppb
2017-07-05C17070062-001B0.960 ppb
2017-07-05C17070062-002B1.90 ppb
2017-07-05C17070062-003B1.10 ppb
2017-07-05C17070062-004B0.750 ppb
2017-07-05C17070062-005BND
2017-07-05C17070062-008AND
2017-07-05C17070062-009B0.580 ppb
2017-07-05C17070062-010A0.530 ppb
2017-07-05C17070062-011B0.580 ppb
2017-10-03C17100100-001B1.90 ppb
2017-10-03C17100100-002B2.20 ppb
2017-10-03C17100100-003B2.40 ppb
2017-10-03C17100100-004B1.40 ppb
2017-10-03C17100100-005B2.10 ppb
2017-10-03C17100100-008A2.10 ppb
2017-10-03C17100100-009B2.40 ppb
2017-10-03C17100100-010A2.10 ppb
2017-10-03C17100100-011B2.50 ppb
2018-01-09C18010249-009B1.20 ppb
2018-01-09C18010249-001B1.30 ppb
2018-01-09C18010249-011B1.10 ppb
2018-01-09C18010249-010A1.20 ppb
2018-01-09C18010249-002B2.50 ppb
2018-01-09C18010249-008A2.00 ppb
2018-01-09C18010249-005B1.10 ppb
2018-01-09C18010249-004B1.10 ppb
2018-01-09C18010249-003BND
2018-04-03C18040084-009B1.000 ppb
2018-04-03C18040084-010A0.940 ppb
2018-04-03C18040084-011B0.980 ppb
2018-04-03C18040084-001B0.630 ppb
2018-04-03C18040084-008A1.10 ppb
2018-04-03C18040084-003B0.960 ppb
2018-04-03C18040084-004B1.80 ppb
2018-04-03C18040084-005B1.20 ppb
2018-04-03C18040084-002B1.20 ppb
2018-07-03C18070084-002B1.40 ppb
2018-07-03C18070084-001B2.00 ppb
2018-07-03C18070084-011B0.780 ppb
2018-07-03C18070084-010A0.820 ppb
2018-07-03C18070084-009B0.840 ppb
2018-07-03C18070084-008A1.10 ppb
2018-07-03C18070084-005B1.20 ppb
2018-07-03C18070084-003B1.60 ppb
2018-07-03C18070084-004B1.70 ppb
2018-10-10C18100435-001B2.30 ppb
2018-10-10C18100435-002B1.80 ppb
2018-10-10C18100435-003B2.30 ppb
2018-10-10C18100435-004B2.60 ppb
2018-10-10C18100435-005B1.70 ppb
2018-10-10C18100435-008A1.20 ppb
2018-10-10C18100435-009B1.90 ppb
2018-10-10C18100435-010A1.90 ppb
2018-10-10C18100435-011B2.20 ppb