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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Roma

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)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.319 ppb164ND - 1.40 ppb
2015ND160ND
2016ND160ND
20170.181 ppb161ND - 2.90 ppb
20180.0813 ppb161ND - 1.30 ppb
20190.225 ppb163ND - 1.30 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
2014-02-26AC44703ND
2014-02-26AC446991.10 ppb
2014-02-26AC447301.40 ppb
2014-02-26AC44732ND
2014-06-10AC56432ND
2014-06-10AC56453ND
2014-06-10AC56451ND
2014-06-10AC56459ND
2014-08-18AC64162ND
2014-08-18AC641471.40 ppb
2014-08-18AC64163ND
2014-08-18AC641601.20 ppb
2014-12-03AC73527ND
2014-12-03AC73553ND
2014-12-03AC73555ND
2014-12-03AC73558ND
2015-02-11AC80203ND
2015-02-11AC80181ND
2015-02-11AC80183ND
2015-02-11AC80180ND
2015-06-08AC94851ND
2015-06-08AC94861ND
2015-06-08AC94870ND
2015-06-08AC94850ND
2015-09-24AD08463ND
2015-09-24AD08464ND
2015-09-24AD08461ND
2015-09-24AD08460ND
2015-11-05AD12759ND
2015-11-05AD12764ND
2015-11-05AD12767ND
2015-11-05AD12768ND
2016-02-25AD25695ND
2016-02-25AD25728ND
2016-02-25AD25727ND
2016-02-25AD25681ND
2016-05-12AD36585ND
2016-05-12AD36595ND
2016-05-12AD36589ND
2016-05-12AD36588ND
2016-09-20AD50351ND
2016-09-20AD50350ND
2016-09-20AD50352ND
2016-09-20AD50348ND
2016-10-27AD55114ND
2016-10-27AD55095ND
2016-10-27AD55094ND
2016-10-27AD55115ND
2017-03-10AD74637ND
2017-03-10AD74643ND
2017-03-10AD74640ND
2017-03-10AD74635ND
2017-04-27AD81461ND
2017-04-27AD81453ND
2017-04-27AD81460ND
2017-04-27AD81456ND
2017-08-03AD92125ND
2017-08-03AD92133ND
2017-08-03AD92141ND
2017-08-03AD92131ND
2017-11-09AE043122.90 ppb
2017-11-09AE04310ND
2017-11-09AE04313ND
2017-11-09AE04315ND
2018-03-09AE17813ND
2018-03-09AE17823ND
2018-03-09AE17819ND
2018-03-09AE17822ND
2018-05-17AE26764ND
2018-05-17AE26736ND
2018-05-17AE26760ND
2018-05-17AE26759ND
2018-08-30AE38922ND
2018-08-30AE38917ND
2018-08-30AE38914ND
2018-08-30AE38919ND
2018-12-03AE47762ND
2018-12-03AE47760ND
2018-12-03AE477511.30 ppb
2018-12-03AE47766ND
2019-02-07AE53436ND
2019-02-07AE53426ND
2019-02-07AE53419ND
2019-02-07AE53427ND
2019-06-10AE69969ND
2019-06-10AE69970ND
2019-06-10AE69967ND
2019-06-10AE69984ND
2019-09-13AE835281.000 ppb
2019-09-13AE835261.30 ppb
2019-09-13AE83524ND
2019-09-13AE835311.30 ppb
2019-12-06AE91863ND
2019-12-06AE91867ND
2019-12-06AE91864ND
2019-12-06AE91861ND