Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Northwestern W and SD - Toledo Svce Area

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)

51

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.77 ppb1615ND - 12.2 ppb
20151.03 ppb168ND - 3.00 ppb
20160.338 ppb164ND - 1.70 ppb
20171.04 ppb168ND - 3.90 ppb
20181.56 ppb168ND - 6.50 ppb
20192.11 ppb128ND - 4.60 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
2014-02-12AG644914.50 ppb
2014-02-12AG644904.50 ppb
2014-02-12AG644894.30 ppb
2014-02-12AG644884.10 ppb
2014-05-08AG703376.10 ppb
2014-05-08AG7033812.2 ppb
2014-05-08AG703409.40 ppb
2014-05-08AG703395.10 ppb
2014-08-12AG77626ND
2014-08-12AG776271.10 ppb
2014-08-12AG776282.40 ppb
2014-08-12AG776291.90 ppb
2014-11-13AG856171.000 ppb
2014-11-13AG856181.30 ppb
2014-11-13AG856161.20 ppb
2014-11-13AG856151.20 ppb
2015-02-10AG905461.50 ppb
2015-02-10AG90547ND
2015-02-10AG905481.70 ppb
2015-02-10AG905492.10 ppb
2015-05-13AG96368ND
2015-05-13AG96369ND
2015-05-13AG963701.20 ppb
2015-05-13AG96371ND
2015-08-12AH035943.00 ppb
2015-08-12AH035972.50 ppb
2015-08-12AH035952.30 ppb
2015-08-12AH035962.20 ppb
2015-11-12AH10030ND
2015-11-12AH10031ND
2015-11-12AH10032ND
2015-11-12AH10033ND
2016-02-10AH153031.000 ppb
2016-02-10AH15304ND
2016-02-10AH153051.70 ppb
2016-02-10AH153061.70 ppb
2016-05-11AH21651ND
2016-05-11AH21654ND
2016-05-11AH21653ND
2016-05-11AH21652ND
2016-08-10AH28218ND
2016-08-10AH28219ND
2016-08-10AH28221ND
2016-08-11AH28220ND
2016-11-10AH35780ND
2016-11-10AH357791.000 ppb
2016-11-10AH35777ND
2016-11-10AH35778ND
2017-02-08AH430001.000 ppb
2017-02-08AH430012.00 ppb
2017-02-08AH430022.10 ppb
2017-02-08AH429991.10 ppb
2017-05-11AH496482.50 ppb
2017-05-11AH496492.00 ppb
2017-05-11AH496503.90 ppb
2017-05-11AH496512.10 ppb
2017-08-09AH57027ND
2017-08-09AH57026ND
2017-08-09AH57025ND
2017-08-09AH57024ND
2017-11-08AH64199ND
2017-11-08AH64200ND
2017-11-08AH64201ND
2017-11-08AH64202ND
2018-02-08AH698331.80 ppb
2018-02-08AH698341.80 ppb
2018-02-08AH698361.70 ppb
2018-02-12AH698352.10 ppb
2018-05-08AH758586.50 ppb
2018-05-08AH758562.60 ppb
2018-05-08AH758552.60 ppb
2018-05-08AH758575.80 ppb
2018-08-09AH82889ND
2018-08-09AH82890ND
2018-08-09AH82891ND
2018-08-09AH82892ND
2018-11-13AH90151ND
2018-11-13AH90152ND
2018-11-13AH90153ND
2018-11-13AH90154ND
2019-02-13AH959032.90 ppb
2019-02-13AH959052.50 ppb
2019-02-13AH959042.80 ppb
2019-02-13AH959022.80 ppb
2019-05-09AI020342.50 ppb
2019-05-09AI020352.60 ppb
2019-05-09AI020364.60 ppb
2019-05-09AI020374.60 ppb
2019-08-09AI08719ND
2019-08-09AI08720ND
2019-08-09AI08721ND
2019-08-09AI08722ND