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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Summerville

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

73

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201413.2 ppb1612ND - 32.0 ppb
201518.6 ppb1612ND - 63.0 ppb
201615.1 ppb1612ND - 44.0 ppb
201720.7 ppb1613ND - 60.0 ppb
201829.7 ppb1612ND - 80.0 ppb
201916.2 ppb1612ND - 75.0 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
2014-02-18AI2820622.0 ppb
2014-02-18AI2820532.0 ppb
2014-02-18AI2820416.0 ppb
2014-02-18AI28203ND
2014-05-12AI4034315.0 ppb
2014-05-12AI4034214.0 ppb
2014-05-12AI4034111.0 ppb
2014-05-12AI40340ND
2014-08-12AI4943613.0 ppb
2014-08-12AI49435ND
2014-08-12AI4943712.0 ppb
2014-08-12AI4943813.0 ppb
2014-11-12AI59472ND
2014-11-12AI5947117.0 ppb
2014-11-12AI5947018.0 ppb
2014-11-12AI5946928.0 ppb
2015-02-12AI6490614.0 ppb
2015-02-12AI6490513.0 ppb
2015-02-12AI6490412.0 ppb
2015-02-12AI64903ND
2015-05-12AI76962ND
2015-05-12AI7696317.0 ppb
2015-05-12AI7696526.0 ppb
2015-05-12AI7696421.0 ppb
2015-08-11AI85985ND
2015-08-11AI8598412.0 ppb
2015-08-11AI8598313.0 ppb
2015-08-11AI8598212.0 ppb
2015-11-12AJ00978ND
2015-11-12AJ0097744.0 ppb
2015-11-12AJ0097663.0 ppb
2015-11-12AJ0097551.0 ppb
2016-02-11AJ0636321.0 ppb
2016-02-11AJ06362ND
2016-02-11AJ0636420.0 ppb
2016-02-11AJ0636544.0 ppb
2016-05-09AJ11781ND
2016-05-09AJ1178020.0 ppb
2016-05-09AJ1177914.0 ppb
2016-05-09AJ1177812.0 ppb
2016-08-09AJ21805ND
2016-08-09AJ2180419.0 ppb
2016-08-09AJ2180315.0 ppb
2016-08-09AJ2180214.0 ppb
2016-11-08AJ3298720.0 ppb
2016-11-08AJ32990ND
2016-11-08AJ3298923.0 ppb
2016-11-08AJ3298819.0 ppb
2017-02-06AJ45803ND
2017-02-06AJ4580215.0 ppb
2017-02-06AJ4580126.0 ppb
2017-02-06AJ45800ND
2017-05-09AJ55065ND
2017-05-09AJ5506460.0 ppb
2017-05-09AJ5506338.0 ppb
2017-05-09AJ5506230.0 ppb
2017-08-09AJ6355918.0 ppb
2017-08-09AJ6355823.0 ppb
2017-08-09AJ6356017.0 ppb
2017-08-09AJ635611.90 ppb
2017-11-08AJ7345816.0 ppb
2017-11-08AJ7345736.0 ppb
2017-11-08AJ7345624.0 ppb
2017-11-08AJ7345526.0 ppb
2018-02-13AJ83805ND
2018-02-13AJ8380480.0 ppb
2018-02-13AJ8380370.0 ppb
2018-02-13AJ8380275.0 ppb
2018-05-15AJ8951016.0 ppb
2018-05-15AJ8951121.0 ppb
2018-05-15AJ89513ND
2018-05-15AJ8951218.0 ppb
2018-08-08AJ9718032.0 ppb
2018-08-08AJ97179ND
2018-08-08AJ9717824.0 ppb
2018-08-08AJ9717717.0 ppb
2018-11-14AK06234ND
2018-11-14AK0623332.0 ppb
2018-11-14AK0623256.0 ppb
2018-11-14AK0623134.0 ppb
2019-02-12AK11264ND
2019-02-13AK1126211.0 ppb
2019-02-13AK1126114.0 ppb
2019-02-13AK1126322.0 ppb
2019-05-07AK16673ND
2019-05-07AK1667226.0 ppb
2019-05-07AK1667175.0 ppb
2019-05-07AK1667019.0 ppb
2019-08-13AK25999ND
2019-08-13AK2599811.0 ppb
2019-08-13AK259976.80 ppb
2019-08-13AK259968.00 ppb
2019-11-14AK3686420.0 ppb
2019-11-14AK36867ND
2019-11-14AK3686621.0 ppb
2019-11-14AK3686526.0 ppb