Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Country Estates Water System North

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

 

74

Samples

0

Samples exceeding legal limit (MCL)

42

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
20158.88 ppb84ND - 18.7 ppb
2016ND120ND
20172.89 ppb1812ND - 12.8 ppb
20182.48 ppb1614ND - 6.20 ppb
20191.25 ppb1612ND - 2.90 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
2014-08-121325220ND
2014-08-121325219ND
2014-08-121325220ND
2014-08-121325219ND
2015-08-26142223916.8 ppb
2015-08-26142224018.7 ppb
2015-08-26142224018.7 ppb
2015-08-26142223916.8 ppb
2015-11-301447682ND
2015-11-301447683ND
2015-11-301447683ND
2015-11-301447682ND
2016-05-301496263ND
2016-05-301496264ND
2016-05-301496264ND
2016-05-301496263ND
2016-08-181518355ND
2016-08-181518356ND
2016-08-181518356ND
2016-08-181518355ND
2016-11-161542214ND
2016-11-161542215ND
2016-11-161542215ND
2016-11-161542214ND
2017-02-0135292582011ND
2017-02-0135292582012ND
2017-02-0135292582012ND
2017-02-0135292582011ND
2017-05-05353106180142.20 ppb
2017-05-053531061801312.8 ppb
2017-05-053531061801312.8 ppb
2017-05-05353106180142.20 ppb
2017-08-02353280020081.000 ppb
2017-08-0235328002007ND
2017-08-0235328002007ND
2017-08-02353280020081.000 ppb
2017-11-02353461640013.10 ppb
2017-11-02353461640021.10 ppb
2017-11-02353461640013.10 ppb
2017-11-02353461640021.10 ppb
2017-12-05353614760015.80 ppb
2017-12-05353614760015.80 ppb
2018-02-02353720380022.20 ppb
2018-02-0235372038001ND
2018-02-0235372038001ND
2018-02-02353720380022.20 ppb
2018-05-10353919410016.20 ppb
2018-05-10353919410021.90 ppb
2018-05-10353919410016.20 ppb
2018-05-10353919410021.90 ppb
2018-08-02354085930023.30 ppb
2018-08-02354085930011.70 ppb
2018-08-02354085930011.70 ppb
2018-08-02354085930023.30 ppb
2018-11-09354301990010.560 ppb
2018-11-09354301990024.00 ppb
2018-11-09354301990010.560 ppb
2018-11-09354301990024.00 ppb
2019-02-0135445744002ND
2019-02-0135445744001ND
2019-02-0135445744001ND
2019-02-0135445744002ND
2019-05-15354693680021.30 ppb
2019-05-15354693680021.30 ppb
2019-05-15354693680010.850 ppb
2019-05-15354693680010.850 ppb
2019-08-02354872330022.00 ppb
2019-08-02354872330010.360 ppb
2019-08-02354872330010.360 ppb
2019-08-02354872330022.00 ppb
2019-11-14355125530012.60 ppb
2019-11-14355125530022.90 ppb
2019-11-14355125530012.60 ppb
2019-11-14355125530022.90 ppb