Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

City of Long Beach

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

 

21

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.333 ppb123ND - 2.00 ppb
2015N/A00N/A
2016ND30ND
2017ND20ND
2018ND20ND
20191.50 ppb21ND - 3.00 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
2014-01-21140122-010HAND
2014-01-21140122-009HA1.000 ppb
2014-01-21140122-004HAND
2014-01-21140122-003HA1.000 ppb
2014-04-21140422-008HAND
2014-04-21140422-007HA2.00 ppb
2014-04-21140422-002HAND
2014-04-21140422-001HAND
2014-08-11140812-013HAND
2014-08-11140812-017HAND
2014-08-11140812-016HAND
2014-08-11140812-012HAND
2016-06-22160623-003HAND
2016-12-05161206-003HAND
2016-12-05161206-002HAND
2017-07-31170801-004HAND
2017-07-31170801-003HAND
2018-06-04180605-009HAND
2018-06-04180605-008HAND
2019-06-03190604-010HA3.00 ppb
2019-12-17191218-012HAND