Know Your Environment. Protect Your Health.

Trichloroacetic acid

CTWC - Unionville System

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.

 

97

Samples

0

Samples exceeding legal limit (MCL)

95

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201822.1 ppb161616.0 ppb - 25.7 ppb
201919.5 ppb16162.80 ppb - 32.2 ppb
202015.9 ppb16160.800 ppb - 28.3 ppb
202122.4 ppb17173.70 ppb - 39.2 ppb
202220.0 ppb1614ND - 42.0 ppb
202323.2 ppb16166.60 ppb - 34.0 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
2018-01-16BZ73287HAA519.0 ppb
2018-01-16BZ73288HAA522.0 ppb
2018-01-16BZ73289HAA525.0 ppb
2018-01-16BZ73286HAA521.0 ppb
2018-04-27CA37381HAA520.0 ppb
2018-04-27CA37382HAA522.0 ppb
2018-04-27CA37383HAA524.0 ppb
2018-04-27CA37384HAA523.0 ppb
2018-07-24CA9673422.0 ppb
2018-07-24CA9673521.0 ppb
2018-07-24CA9673625.0 ppb
2018-07-24CA9673716.0 ppb
2018-10-02DBP 20050766617.8 ppb
2018-10-02DBP 20050802025.7 ppb
2018-10-02DBP 20050766725.1 ppb
2018-10-02DBP 20050766524.6 ppb
2019-01-08DBP 20051813028.0 ppb
2019-01-08DBP 20051813615.1 ppb
2019-01-08DBP 20051813927.2 ppb
2019-01-08DBP 20051814332.2 ppb
2019-04-09DBP 2005278464.10 ppb
2019-04-09DBP 2005278472.80 ppb
2019-04-09DBP 20052784828.8 ppb
2019-04-09DBP 2005278493.50 ppb
2019-07-02DBP 20053898724.4 ppb
2019-07-02DBP 20053898924.0 ppb
2019-07-02DBP 20053898824.3 ppb
2019-07-02DBP 20053898625.4 ppb
2019-10-08DBP 20055201317.5 ppb
2019-10-08DBP 20055201417.0 ppb
2019-10-08DBP 20055201517.5 ppb
2019-10-08DBP 20055201220.2 ppb
2020-01-16DBP 20056340019.4 ppb
2020-01-16DBP 20056340122.3 ppb
2020-01-16DBP 20056340217.7 ppb
2020-01-16DBP 20056340323.9 ppb
2020-04-16DBP 20057292028.3 ppb
2020-04-16DBP 20057292219.2 ppb
2020-04-16DBP 20057291821.1 ppb
2020-04-16DBP 20057291719.0 ppb
2020-07-13DBP 20058248123.6 ppb
2020-07-13DBP 2005824820.800 ppb
2020-07-13DBP 20058248319.6 ppb
2020-07-14DBP 20058284118.6 ppb
2020-10-19DBP 2005944691.40 ppb
2020-10-20DBP 20059484714.4 ppb
2020-10-20DBP 2005948481.60 ppb
2020-10-20DBP 2005948494.00 ppb
2021-01-08DBP 2006034133.70 ppb
2021-01-08DBP 20060341012.2 ppb
2021-01-08DBP 20060341111.6 ppb
2021-01-08DBP 2006034128.40 ppb
2021-04-15DBP 20061365822.4 ppb
2021-04-15DBP 20061365914.9 ppb
2021-04-15DBP 20061366021.4 ppb
2021-04-15DBP 20061366121.9 ppb
2021-07-15DBP 20062513525.6 ppb
2021-07-15DBP 20062513625.7 ppb
2021-07-15DBP 20062513727.4 ppb
2021-07-15DBP 20062513814.4 ppb
2021-07-29DBP 20062667823.0 ppb
2021-10-11H300079421 30007942739.2 ppb
2021-10-11H300079423 30007943134.8 ppb
2021-10-11H300079422 30007942938.8 ppb
2021-10-11H300079420 30007942535.7 ppb
2022-01-13CK1552242.0 ppb
2022-01-13CK1552311.0 ppb
2022-01-13CK1552442.0 ppb
2022-01-13CK1552532.0 ppb
2022-04-08CL0614827.0 ppb
2022-04-08CL06149ND
2022-04-08CL06150ND
2022-04-08CL061518.00 ppb
2022-07-11CL7532730.0 ppb
2022-07-11CL7533026.0 ppb
2022-07-11CL753284.60 ppb
2022-07-11CL7532925.0 ppb
2022-10-07CM5882018.0 ppb
2022-10-07CM5882118.0 ppb
2022-10-07CM5882216.0 ppb
2022-10-07CM5882321.0 ppb
2023-01-16CN2447924.0 ppb
2023-01-16CN2448012.0 ppb
2023-01-16CN2448121.0 ppb
2023-01-16CN244826.60 ppb
2023-04-07CN807917.80 ppb
2023-04-07CN8079312.0 ppb
2023-04-07CN8079222.0 ppb
2023-04-07CN8079023.0 ppb
2023-07-18CO5303427.0 ppb
2023-07-18CO5303534.0 ppb
2023-07-18CO5303624.0 ppb
2023-07-18CO5303728.0 ppb
2023-10-04CP1781133.0 ppb
2023-10-04CP1781234.0 ppb
2023-10-04CP1781333.0 ppb
2023-10-04CP1781430.0 ppb