Know Your Environment. Protect Your Health.

Trichloroacetic acid

Woodward Resource Center

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201812.4 ppb10104.00 ppb - 22.0 ppb
20196.13 ppb884.00 ppb - 9.00 ppb
20209.25 ppb881.000 ppb - 18.0 ppb
20211.38 ppb83ND - 6.00 ppb
2022ND80ND
20230.250 ppb41ND - 1.000 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-15OE62333721.0 ppb
2018-02-15OE62333622.0 ppb
2018-04-23OE64866313.0 ppb
2018-04-23OE64866212.0 ppb
2018-05-23OE6614129.00 ppb
2018-05-23OE66141316.0 ppb
2018-08-08OE6955554.00 ppb
2018-08-08OE6955567.00 ppb
2018-11-19OE74156412.0 ppb
2018-11-19OE7415658.00 ppb
2019-02-13OE7704299.00 ppb
2019-02-13OE7704308.00 ppb
2019-05-20OE8101034.00 ppb
2019-05-20OE8101044.00 ppb
2019-08-22OE8549375.00 ppb
2019-08-22OE8549385.00 ppb
2019-11-20OE8960877.00 ppb
2019-11-20OE8960887.00 ppb
2020-02-26OE9333638.00 ppb
2020-02-26OE9333648.00 ppb
2020-05-14OE10082681.000 ppb
2020-05-14OE10082697.00 ppb
2020-08-18OE11829618.00 ppb
2020-08-18OE11829337.00 ppb
2020-11-18OE143504217.0 ppb
2020-11-18OE143504318.0 ppb
2021-02-23OE15994556.00 ppb
2021-02-23OE15994564.00 ppb
2021-05-17OE16987661.000 ppb
2021-05-17OE1698767ND
2021-08-09OE1788578ND
2021-08-09OE1788579ND
2021-11-03OE1918693ND
2021-11-03OE1918694ND
2022-02-15OE2045226ND
2022-02-15OE2045227ND
2022-05-18OE2101783ND
2022-05-18OE2101784ND
2022-08-23OE2159431ND
2022-08-23OE2159432ND
2022-11-17OE2206983ND
2022-11-17OE2206984ND
2023-02-15OE2242410ND
2023-05-11OE2279124ND
2023-08-21OE23250891.000 ppb
2023-11-20OE2365472ND