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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Dan River Water Inc

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

 

94

Samples

0

Samples exceeding legal limit (MCL)

79

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.39 ppb1410ND - 5.20 ppb
20152.60 ppb1611ND - 8.40 ppb
20164.51 ppb1614ND - 10.00 ppb
20174.86 ppb16162.40 ppb - 10.00 ppb
20184.54 ppb1613ND - 8.00 ppb
20192.85 ppb1615ND - 5.90 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
2014-02-0392188351002-21.40 ppb
2014-02-0392188351003-21.40 ppb
2014-02-0392188351004-2ND
2014-02-0392188351001-23.40 ppb
2014-05-0592199767001DIS-23.30 ppb
2014-05-0592199767002DIS-2ND
2014-05-0592199767003DIS-23.10 ppb
2014-05-0592199767004DIS-23.60 ppb
2014-08-0492211765003TTHND
2014-08-0492211765004TTH2.40 ppb
2014-11-0492223970005ND
2014-11-04922239700044.50 ppb
2014-11-04922239700065.20 ppb
2014-11-0492223970002TTH5.10 ppb
2015-02-022.10 ppb
2015-02-021.40 ppb
2015-02-02ND
2015-02-021.90 ppb
2015-05-043.40 ppb
2015-05-042.90 ppb
2015-05-043.40 ppb
2015-05-04ND
2015-08-032.00 ppb
2015-08-03ND
2015-08-03ND
2015-08-033.90 ppb
2015-11-098.00 ppb
2015-11-09ND
2015-11-098.40 ppb
2015-11-094.20 ppb
2016-02-0192284798005TTH-23.30 ppb
2016-02-0192284798006TTH-25.50 ppb
2016-02-0192284798007TTH-22.50 ppb
2016-02-0192284798008TTH-2ND
2016-05-0392296089004TTH-24.80 ppb
2016-05-0392296089003TTH-24.30 ppb
2016-05-0392296089002TTH-24.60 ppb
2016-05-0392296089001TTH-24.80 ppb
2016-08-0192307126001TTH-23.00 ppb
2016-08-0192307126002TTH-2ND
2016-08-0192307126003TTH-210.00 ppb
2016-08-0192307126004TTH-29.30 ppb
2016-11-0492318526001TTH-25.30 ppb
2016-11-0492318526002TTH-24.40 ppb
2016-11-0492318526003TTH-25.90 ppb
2016-11-0492318526004TTH-24.50 ppb
2017-02-0992329367003TTH2.60 ppb
2017-02-0992329367001TTH2.90 ppb
2017-02-0992329367004TTH2.80 ppb
2017-02-0992329367005TTH2.40 ppb
2017-05-1592340581002TTH9.70 ppb
2017-05-1592340581003TTH10.00 ppb
2017-05-1592340581001TTH6.00 ppb
2017-05-1592340581004TTH8.20 ppb
2017-08-2192352238001TTH3.10 ppb
2017-08-2192352238002TTH4.20 ppb
2017-08-2192352238003TTH4.40 ppb
2017-08-2192352238004TTH4.20 ppb
2017-11-1392363061001TTH4.50 ppb
2017-11-1392363061002TTH4.20 ppb
2017-11-1392363061003TTH4.20 ppb
2017-11-1392363061004TTH4.30 ppb
2018-02-1292373033004TTH ND
2018-02-1292373033003TTH ND
2018-02-1292373033002TTH 1.40 ppb
2018-02-1292373033001TTH ND
2018-05-0792383676004TTH 5.70 ppb
2018-05-0792383676001TTH 5.90 ppb
2018-05-0792383676002TTH 5.50 ppb
2018-05-0792383676003TTH 3.60 ppb
2018-08-0692394553004TTH 8.00 ppb
2018-08-0692394553003TTH 7.50 ppb
2018-08-0692394553002TTH 5.60 ppb
2018-08-0692394553001TTH 7.30 ppb
2018-11-0592405940001TTH 4.10 ppb
2018-11-0592405940002TTH 6.10 ppb
2018-11-0592405940003TTH 5.10 ppb
2018-11-0592405940004TTH 6.80 ppb
2019-02-0492416334001_37702.70 ppb
2019-02-0492416334002_37702.80 ppb
2019-02-0492416334003_37702.90 ppb
2019-02-0492416334004_37702.70 ppb
2019-05-0692427980001_37704.40 ppb
2019-05-0692427980005_37703.70 ppb
2019-05-0692427980004_37703.70 ppb
2019-05-0692427980002_37705.10 ppb
2019-08-0592439952002_37701.20 ppb
2019-08-0592439952004_3770ND
2019-08-0592439952003_37705.90 ppb
2019-08-0592439952001_37701.90 ppb
2019-11-0492452111004_37701.50 ppb
2019-11-0492452111003_37702.70 ppb
2019-11-0492452111002_37701.90 ppb
2019-11-0492452111001_37702.50 ppb