Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Trichloroacetic acid

Hamler Village

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.367 ppb31ND - 1.10 ppb
20132.94 ppb551.000 ppb - 4.60 ppb
20141.29 ppb96ND - 3.40 ppb
20151.79 ppb86ND - 3.40 ppb
20160.938 ppb84ND - 2.80 ppb
20170.563 ppb84ND - 1.20 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
2012-07-3012-19135-01ND
2012-07-3012-19135-02ND
2012-07-3012-19135-031.10 ppb
2013-09-0913-22174-014.60 ppb
2013-09-0913-22174-022.80 ppb
2013-10-0813-23672-012.80 ppb
2013-12-1613-26840-013.50 ppb
2013-12-1613-26840-021.000 ppb
2014-03-1014-12951-02ND
2014-03-1014-12951-011.30 ppb
2014-06-0914-17402-011.80 ppb
2014-06-0914-17402-02ND
2014-06-2414-18179-011.40 ppb
2014-09-0914-22272-021.000 ppb
2014-09-0914-22272-012.70 ppb
2014-12-0814-26771-01ND
2014-12-0814-26771-023.40 ppb
2015-03-0915-12939-02ND
2015-03-0915-12939-01ND
2015-06-0815-17725-013.20 ppb
2015-06-0815-17725-022.50 ppb
2015-09-0815-23103-022.20 ppb
2015-09-0815-23103-013.40 ppb
2015-12-0815-27970-011.50 ppb
2015-12-0815-27970-021.50 ppb
2016-03-1416-13839-02ND
2016-03-1416-13839-01ND
2016-06-1316-18867-012.80 ppb
2016-06-1316-18867-022.20 ppb
2016-09-1316-25469-01ND
2016-09-1316-25469-021.10 ppb
2016-12-2716-31583-02ND
2016-12-2716-31583-011.40 ppb
2017-03-1317-14485-011.000 ppb
2017-03-1317-14485-021.10 ppb
2017-06-1217-20535-011.20 ppb
2017-06-1217-20535-021.20 ppb
2017-09-1117-27503-01ND
2017-09-1117-27503-02ND
2017-12-1117-33825-01ND
2017-12-1117-33825-02ND