Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Darbonne Ws 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

 

68

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND80ND
2017ND180ND
20180.341 ppb1810ND - 0.770 ppb
2019ND160ND

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
2014-07-081315655ND
2014-07-081315654ND
2014-07-081315655ND
2014-07-081315654ND
2015-07-071408337ND
2015-07-071408338ND
2015-07-071408338ND
2015-07-071408337ND
2016-08-151516442ND
2016-08-151516443ND
2016-08-151516443ND
2016-08-151516442ND
2016-11-081539767ND
2016-11-081539768ND
2016-11-081539768ND
2016-11-081539767ND
2017-02-0235292874003ND
2017-02-0235292874004ND
2017-02-0235292874004ND
2017-02-0235292874003ND
2017-05-1535312642001ND
2017-05-1535312642002ND
2017-05-1535312642002ND
2017-05-1535312642001ND
2017-08-1035329805004ND
2017-08-1035329805003ND
2017-08-1035329805004ND
2017-08-1035329805003ND
2017-12-2135365016003ND
2017-12-2135365016002ND
2017-12-2135365016001ND
2017-12-2135365016001ND
2017-12-2135365016002ND
2017-12-2135365016003ND
2018-02-2635376598001ND
2018-02-26353765980020.520 ppb
2018-02-26353765980030.660 ppb
2018-02-2635376598001ND
2018-02-26353765980020.520 ppb
2018-02-26353765980030.660 ppb
2018-05-29353952120010.730 ppb
2018-05-29353952120020.770 ppb
2018-05-29353952120010.730 ppb
2018-05-29353952120020.770 ppb
2018-08-16354120630020.390 ppb
2018-08-1635412063001ND
2018-08-1635412063001ND
2018-08-16354120630020.390 ppb
2018-11-1935432389001ND
2018-11-1935432389002ND
2018-11-1935432389001ND
2018-11-1935432389002ND
2019-02-2535450964002ND
2019-02-2535450964001ND
2019-02-2535450964001ND
2019-02-2535450964002ND
2019-05-2035470222002ND
2019-05-2035470222002ND
2019-05-2035470222001ND
2019-05-2035470222001ND
2019-08-1935492404002ND
2019-08-1935492404001ND
2019-08-1935492404001ND
2019-08-1935492404002ND
2019-11-1935514075001ND
2019-11-1935514075002ND
2019-11-1935514075001ND
2019-11-1935514075002ND