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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Covina Irrigating Company

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

 

163

Samples

0

Samples exceeding legal limit (MCL)

131

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20146.47 ppb2514ND - 18.0 ppb
20153.43 ppb2314ND - 41.0 ppb
20162.23 ppb2721ND - 4.00 ppb
20177.43 ppb28284.50 ppb - 14.0 ppb
20182.41 ppb28281.60 ppb - 4.30 ppb
20192.44 ppb3226ND - 5.00 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
2014-04-259588-800-0950ND
2014-04-259588-801-1000ND
2014-04-259588-802-1015ND
2014-04-259588-803-1030ND
2014-04-259588-804-0930ND
2014-04-259588-805-09205.00 ppb
2014-04-259588-806-09405.10 ppb
2014-04-259588-807-09105.10 ppb
2014-05-239588-804-08006.90 ppb
2014-07-259588-800-1005ND
2014-07-259588-801-1025ND
2014-07-259588-802-1040ND
2014-07-259588-803-1055ND
2014-07-259588-804-101511.0 ppb
2014-07-259588-805-094513.0 ppb
2014-07-259588-806-095512.0 ppb
2014-07-259588-807-091512.0 ppb
2014-10-249588-800-09159.60 ppb
2014-10-249588-801-093518.0 ppb
2014-10-249588-802-1030ND
2014-10-249588-803-0955ND
2014-10-249588-804-092516.0 ppb
2014-10-249588-805-085515.0 ppb
2014-10-249588-806-090518.0 ppb
2014-10-249588-807-083015.0 ppb
2015-03-199588-804-101541.0 ppb
2015-04-249588-800-0920ND
2015-04-249588-801-0930ND
2015-04-249588-802-0945ND
2015-04-249588-803-0955ND
2015-05-189588-804-12301.10 ppb
2015-05-189588-806-12151.20 ppb
2015-05-189588-807-11401.40 ppb
2015-07-249588-800-09354.30 ppb
2015-07-249588-801-09554.20 ppb
2015-07-249588-802-1005ND
2015-07-249588-803-1015ND
2015-07-249588-804-09453.30 ppb
2015-07-249588-806-09254.80 ppb
2015-07-249588-807-09154.50 ppb
2015-10-239588-801-09354.60 ppb
2015-10-239588-804-09252.50 ppb
2015-10-239588-805-09001.80 ppb
2015-10-239588-806-09102.20 ppb
2015-10-239588-807-08401.90 ppb
2015-12-189588-800-0755ND
2015-12-189588-802-0810ND
2015-12-189588-803-0825ND
2016-01-259588-800-0950ND
2016-01-259588-801-1010ND
2016-01-259588-802-1025ND
2016-01-259588-804-1000ND
2016-01-259588-806-0940ND
2016-01-259588-807-0925ND
2016-04-259588-800-09353.30 ppb
2016-04-259588-801-09553.80 ppb
2016-04-259588-802-10053.00 ppb
2016-04-259588-804-09453.50 ppb
2016-04-259588-805-09202.70 ppb
2016-04-259588-806-09302.50 ppb
2016-04-259588-807-09002.10 ppb
2016-07-259588-800-09553.70 ppb
2016-07-259588-801-10153.80 ppb
2016-07-259588-802-10304.00 ppb
2016-07-259588-804-10053.80 ppb
2016-07-259588-805-09403.50 ppb
2016-07-259588-806-09503.50 ppb
2016-07-259588-807-09303.50 ppb
2016-10-259588-800-10002.00 ppb
2016-10-259588-801-10151.90 ppb
2016-10-259588-802-10301.90 ppb
2016-10-259588-804-10102.00 ppb
2016-10-259588-805-09451.90 ppb
2016-10-259588-806-09501.90 ppb
2016-10-259588-807-09351.90 ppb
2017-01-319588-800-11356.60 ppb
2017-01-319588-804-11456.60 ppb
2017-01-319588-805-11156.60 ppb
2017-01-319588-806-11256.60 ppb
2017-01-319588-807-11006.30 ppb
2017-02-039588-801-08206.10 ppb
2017-02-249588-802-090014.0 ppb
2017-04-259588-800-12208.60 ppb
2017-04-259588-801-10407.30 ppb
2017-04-259588-802-10508.80 ppb
2017-04-259588-804-10308.60 ppb
2017-04-259588-805-10008.80 ppb
2017-04-259588-806-10108.90 ppb
2017-04-259588-807-09409.00 ppb
2017-07-259588-800-10109.20 ppb
2017-07-259588-801-10409.20 ppb
2017-07-259588-802-10558.50 ppb
2017-07-259588-804-10258.60 ppb
2017-07-259588-806-10058.60 ppb
2017-07-259588-807-09558.30 ppb
2017-08-019588-805-091010.00 ppb
2017-10-259588-800-10104.70 ppb
2017-10-259588-801-10254.80 ppb
2017-10-259588-802-10354.80 ppb
2017-10-259588-804-10154.80 ppb
2017-10-259588-805-09554.70 ppb
2017-10-259588-806-10054.60 ppb
2017-10-259588-807-09304.50 ppb
2018-01-239588-800-08553.90 ppb
2018-01-239588-801-09153.90 ppb
2018-01-239588-802-09253.70 ppb
2018-01-239588-804-09053.70 ppb
2018-01-239588-806-08454.30 ppb
2018-01-239588-807-08354.30 ppb
2018-02-139588-805-07453.10 ppb
2018-04-259588-800-10052.40 ppb
2018-04-259588-802-10252.30 ppb
2018-04-259588-804-10152.30 ppb
2018-04-259588-805-09452.20 ppb
2018-04-259588-806-09552.40 ppb
2018-04-259588-807-09302.20 ppb
2018-05-079588-801-10001.90 ppb
2018-07-259588-800-09202.00 ppb
2018-07-259588-801-09401.90 ppb
2018-07-259588-802-09551.80 ppb
2018-07-259588-804-09301.80 ppb
2018-07-259588-805-09051.90 ppb
2018-07-259588-806-09101.90 ppb
2018-07-259588-807-08552.00 ppb
2018-10-249588-800-08401.70 ppb
2018-10-249588-801-09001.70 ppb
2018-10-249588-802-09151.60 ppb
2018-10-249588-804-08501.60 ppb
2018-10-249588-805-08201.70 ppb
2018-10-249588-806-08301.60 ppb
2018-10-249588-807-08101.70 ppb
2019-01-239588-800-09301.90 ppb
2019-01-239588-801-09501.90 ppb
2019-01-239588-802-10001.70 ppb
2019-01-239588-804-09401.90 ppb
2019-01-239588-805-09102.00 ppb
2019-01-239588-806-09202.10 ppb
2019-01-239588-807-08351.90 ppb
2019-02-149588-803-1315ND
2019-04-259588-800-0940ND
2019-04-259588-801-10054.00 ppb
2019-04-259588-802-1020ND
2019-04-259588-803-1030ND
2019-04-259588-804-09505.00 ppb
2019-04-259588-805-09254.90 ppb
2019-04-259588-806-09304.60 ppb
2019-04-259588-807-09104.90 ppb
2019-07-259588-800-10003.10 ppb
2019-07-259588-801-10253.10 ppb
2019-07-259588-802-10353.20 ppb
2019-07-259588-803-1045ND
2019-07-259588-804-10103.10 ppb
2019-07-259588-805-09403.10 ppb
2019-07-259588-806-09503.00 ppb
2019-07-259588-807-09153.20 ppb
2019-10-249588-800-08402.50 ppb
2019-10-249588-801-09003.00 ppb
2019-10-249588-802-09103.30 ppb
2019-10-249588-803-0940ND
2019-10-249588-804-08502.60 ppb
2019-10-249588-805-08502.40 ppb
2019-10-249588-806-08303.10 ppb
2019-10-249588-807-08002.60 ppb