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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Wards Chapel Water System

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

42

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND120ND
2016ND160ND
20171.31 ppb1612ND - 2.40 ppb
20181.74 ppb1614ND - 2.30 ppb
20191.19 ppb16160.510 ppb - 2.00 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
2014-03-121284464ND
2014-03-121284463ND
2014-03-121284464ND
2014-03-121284463ND
2014-06-181310852ND
2014-06-181310853ND
2014-06-181310853ND
2014-06-181310852ND
2014-09-171335098ND
2014-09-171335099ND
2014-09-171335099ND
2014-09-171335098ND
2014-12-101356550ND
2014-12-101356551ND
2014-12-101356551ND
2014-12-101356550ND
2015-03-181380162ND
2015-03-181380163ND
2015-03-181380163ND
2015-03-181380162ND
2015-09-121426792ND
2015-09-121426793ND
2015-09-121426793ND
2015-09-121426792ND
2015-12-091450070ND
2015-12-091450070ND
2015-12-091450069ND
2015-12-091450069ND
2016-03-091473608ND
2016-03-091473609ND
2016-03-091473608ND
2016-03-091473609ND
2016-06-151499875ND
2016-06-151499876ND
2016-06-151499875ND
2016-06-151499876ND
2016-09-211526487ND
2016-09-211526487ND
2016-09-211526486ND
2016-09-211526486ND
2016-12-141548541ND
2016-12-141548541ND
2016-12-141548540ND
2016-12-141548540ND
2017-03-0235298606010ND
2017-03-0235298606009ND
2017-03-0235298606010ND
2017-03-0235298606009ND
2017-06-19353195310071.60 ppb
2017-06-19353195310081.10 ppb
2017-06-19353195310081.10 ppb
2017-06-19353195310071.60 ppb
2017-09-21353374520072.40 ppb
2017-09-21353374520082.40 ppb
2017-09-21353374520082.40 ppb
2017-09-21353374520072.40 ppb
2017-12-18353647120021.60 ppb
2017-12-18353647120011.40 ppb
2017-12-18353647120011.40 ppb
2017-12-18353647120021.60 ppb
2018-03-01353778080012.20 ppb
2018-03-01353778080022.30 ppb
2018-03-01353778080012.20 ppb
2018-03-01353778080022.30 ppb
2018-06-18353998750012.20 ppb
2018-06-1835399875002ND
2018-06-18353998750012.20 ppb
2018-06-1835399875002ND
2018-09-18354194270021.70 ppb
2018-09-18354194270011.80 ppb
2018-09-18354194270011.80 ppb
2018-09-18354194270021.70 ppb
2018-12-17354384940011.80 ppb
2018-12-17354384940021.90 ppb
2018-12-17354384940011.80 ppb
2018-12-17354384940021.90 ppb
2019-03-19354562950022.00 ppb
2019-03-19354562950011.40 ppb
2019-03-19354562950011.40 ppb
2019-03-19354562950022.00 ppb
2019-06-05354739300020.990 ppb
2019-06-05354739300020.990 ppb
2019-06-05354739300010.960 ppb
2019-06-05354739300010.960 ppb
2019-09-18354995450021.60 ppb
2019-09-18354995450011.50 ppb
2019-09-18354995450011.50 ppb
2019-09-18354995450021.60 ppb
2019-12-12355188490010.510 ppb
2019-12-12355188490020.550 ppb
2019-12-12355188490010.510 ppb
2019-12-12355188490020.550 ppb