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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Yakima Water Division

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

 

194

Samples

0

Samples exceeding legal limit (MCL)

159

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201412.4 ppb3225ND - 26.1 ppb
201511.8 ppb3322ND - 25.1 ppb
201614.5 ppb3224ND - 25.3 ppb
201719.8 ppb32323.00 ppb - 28.2 ppb
201815.1 ppb3227ND - 24.4 ppb
20199.97 ppb3329ND - 18.5 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
2014-02-2608525ND
2014-02-26085261.80 ppb
2014-02-2608532ND
2014-02-26085272.20 ppb
2014-02-2608529ND
2014-02-2608530ND
2014-02-26085312.10 ppb
2014-02-2608528ND
2014-05-21220633.50 ppb
2014-05-2122064ND
2014-05-212206018.7 ppb
2014-05-212205919.8 ppb
2014-05-21220655.10 ppb
2014-05-212206119.3 ppb
2014-05-212206626.1 ppb
2014-05-2122062ND
2014-08-203746719.3 ppb
2014-08-203746217.5 ppb
2014-08-203746517.0 ppb
2014-08-203746822.1 ppb
2014-08-203746111.8 ppb
2014-08-203746417.3 ppb
2014-08-203746616.9 ppb
2014-08-203746311.5 ppb
2014-11-195194020.9 ppb
2014-11-195193820.5 ppb
2014-11-195194221.9 ppb
2014-11-195193720.6 ppb
2014-11-195193618.0 ppb
2014-11-195193920.3 ppb
2014-11-195194121.5 ppb
2014-11-195193520.6 ppb
2015-02-240821025.1 ppb
2015-02-240820623.8 ppb
2015-02-240821124.5 ppb
2015-02-240820723.3 ppb
2015-02-240820524.1 ppb
2015-02-240821224.3 ppb
2015-02-240820820.7 ppb
2015-02-240820922.0 ppb
2015-05-202288623.4 ppb
2015-05-20228824.00 ppb
2015-05-202288723.1 ppb
2015-05-20228833.10 ppb
2015-05-20228811.90 ppb
2015-05-202288023.5 ppb
2015-05-20228842.10 ppb
2015-05-20228851.80 ppb
2015-06-0325294ND
2015-08-193910117.4 ppb
2015-08-1939103ND
2015-08-193910017.7 ppb
2015-08-1939104ND
2015-08-1939102ND
2015-08-193909917.4 ppb
2015-08-1939105ND
2015-08-1939106ND
2015-11-245702121.8 ppb
2015-11-2457017ND
2015-11-245702222.1 ppb
2015-11-2457018ND
2015-11-2457019ND
2015-11-245702321.4 ppb
2015-11-2457020ND
2015-11-2457016ND
2016-02-249.00 ppb
2016-02-2422.9 ppb
2016-02-2415.6 ppb
2016-02-243.10 ppb
2016-02-24ND
2016-02-2424.0 ppb
2016-02-2417.8 ppb
2016-02-2417.8 ppb
2016-05-2520.5 ppb
2016-05-25ND
2016-05-2516.6 ppb
2016-05-2524.7 ppb
2016-05-25ND
2016-05-2524.7 ppb
2016-05-259.20 ppb
2016-05-2525.3 ppb
2016-08-2424.9 ppb
2016-08-24ND
2016-08-24ND
2016-08-2424.0 ppb
2016-08-24ND
2016-08-24ND
2016-08-24ND
2016-08-2424.6 ppb
2016-11-1620.3 ppb
2016-11-1621.4 ppb
2016-11-1619.2 ppb
2016-11-1619.5 ppb
2016-11-1617.5 ppb
2016-11-1620.1 ppb
2016-11-1620.5 ppb
2016-11-1619.2 ppb
2017-02-2712.5 ppb
2017-02-2720.7 ppb
2017-02-2723.5 ppb
2017-02-2719.1 ppb
2017-02-2712.8 ppb
2017-02-2718.7 ppb
2017-02-2722.6 ppb
2017-02-2713.5 ppb
2017-06-1325.2 ppb
2017-06-1320.5 ppb
2017-06-1321.9 ppb
2017-06-1321.2 ppb
2017-06-1327.4 ppb
2017-06-1328.2 ppb
2017-06-1323.4 ppb
2017-06-1327.9 ppb
2017-09-1916.5 ppb
2017-09-1920.9 ppb
2017-09-1917.5 ppb
2017-09-1922.3 ppb
2017-09-1917.1 ppb
2017-09-1917.7 ppb
2017-09-1915.6 ppb
2017-09-1921.2 ppb
2017-12-0520.5 ppb
2017-12-0521.3 ppb
2017-12-0521.5 ppb
2017-12-0521.6 ppb
2017-12-0521.6 ppb
2017-12-0512.5 ppb
2017-12-053.00 ppb
2017-12-0522.1 ppb
2018-03-0622.6 ppb
2018-03-0623.9 ppb
2018-03-0620.7 ppb
2018-03-0619.6 ppb
2018-03-0620.6 ppb
2018-03-0624.4 ppb
2018-03-0622.8 ppb
2018-03-0623.6 ppb
2018-05-159.90 ppb
2018-05-15ND
2018-05-15ND
2018-05-15ND
2018-05-15ND
2018-05-1510.9 ppb
2018-05-15ND
2018-05-159.70 ppb
2018-08-2119.4 ppb
2018-08-2115.8 ppb
2018-08-2117.7 ppb
2018-08-2115.4 ppb
2018-08-2116.6 ppb
2018-08-2120.4 ppb
2018-08-2119.7 ppb
2018-08-2115.5 ppb
2018-11-2716.7 ppb
2018-11-2715.7 ppb
2018-11-2719.4 ppb
2018-11-2716.4 ppb
2018-11-2715.5 ppb
2018-11-2718.7 ppb
2018-11-2714.3 ppb
2018-11-2716.2 ppb
2019-03-1913.8 ppb
2019-03-1912.5 ppb
2019-03-1911.7 ppb
2019-03-1913.8 ppb
2019-03-1914.7 ppb
2019-03-1913.1 ppb
2019-03-1911.0 ppb
2019-03-1913.1 ppb
2019-06-246.60 ppb
2019-06-246.40 ppb
2019-06-245.80 ppb
2019-06-2411.0 ppb
2019-06-245.50 ppb
2019-06-246.30 ppb
2019-06-2413.2 ppb
2019-06-2413.8 ppb
2019-08-13ND
2019-08-13ND
2019-08-1317.9 ppb
2019-08-13ND
2019-08-132.70 ppb
2019-08-1317.5 ppb
2019-08-132.40 ppb
2019-08-1318.5 ppb
2019-11-06ND
2019-12-1017.9 ppb
2019-12-101.20 ppb
2019-12-1010.9 ppb
2019-12-1012.0 ppb
2019-12-1010.4 ppb
2019-12-1017.8 ppb
2019-12-1011.0 ppb
2019-12-1016.5 ppb