Know Your Environment. Protect Your Health.

Trichloroacetic acid

Watertown Water & Sewer Authority

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201831.4 ppb161620.2 ppb - 39.7 ppb
201926.3 ppb161618.1 ppb - 31.1 ppb
202027.7 ppb161618.9 ppb - 35.8 ppb
202132.1 ppb161620.5 ppb - 38.1 ppb
202224.5 ppb161615.4 ppb - 28.3 ppb
202327.9 ppb161616.4 ppb - 36.1 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
2018-03-07DBP 20048953425.6 ppb
2018-03-07DBP 20048953528.9 ppb
2018-03-07DBP 20048953629.6 ppb
2018-03-07DBP 20048953329.7 ppb
2018-06-06DBP 20049632839.7 ppb
2018-06-06DBP 20049632938.7 ppb
2018-06-06DBP 20049633038.1 ppb
2018-06-06DBP 20049633136.4 ppb
2018-09-05DBP 20050406131.7 ppb
2018-09-05DBP 20050406237.2 ppb
2018-09-05DBP 20050406331.7 ppb
2018-09-05DBP 20050406431.1 ppb
2018-12-05DBP 20051498026.7 ppb
2018-12-05DBP 20051498228.7 ppb
2018-12-05DBP 20051498127.6 ppb
2018-12-05DBP 20051497820.2 ppb
2019-03-06DBP 20052370828.9 ppb
2019-03-06DBP 20052370923.9 ppb
2019-03-06DBP 20052371025.6 ppb
2019-03-06DBP 20052371118.6 ppb
2019-06-05DBP 20053506831.1 ppb
2019-06-05DBP 20053506931.1 ppb
2019-06-05DBP 20053507025.7 ppb
2019-06-05DBP 20053507130.7 ppb
2019-09-05DBP 20054763729.6 ppb
2019-09-05DBP 20054764026.3 ppb
2019-09-05DBP 20054763928.6 ppb
2019-09-05DBP 20054763627.2 ppb
2019-12-05DBP 20055914718.1 ppb
2019-12-05DBP 20055914826.8 ppb
2019-12-05DBP 20055914921.4 ppb
2019-12-05DBP 20055914627.2 ppb
2020-03-04DBP 20056819727.6 ppb
2020-03-04DBP 20056819818.9 ppb
2020-03-04DBP 20056819925.7 ppb
2020-03-04DBP 20056820019.5 ppb
2020-06-03DBP 20057785530.1 ppb
2020-06-03DBP 20057785630.2 ppb
2020-06-03DBP 20057785426.8 ppb
2020-06-03DBP 20057785331.7 ppb
2020-09-02DBP 20058867928.6 ppb
2020-09-02DBP 20058868027.4 ppb
2020-09-02DBP 20058868124.4 ppb
2020-09-02DBP 20058868228.1 ppb
2020-12-02DBP 20059979135.8 ppb
2020-12-02DBP 20059979225.6 ppb
2020-12-02DBP 20059979331.4 ppb
2020-12-02DBP 20059979431.0 ppb
2021-03-10DBP 20060934931.4 ppb
2021-03-10DBP 20060934630.5 ppb
2021-03-10DBP 20060934720.5 ppb
2021-03-10DBP 20060934828.6 ppb
2021-06-02DBP 20061913726.2 ppb
2021-06-02DBP 20061913929.8 ppb
2021-06-02DBP 20061914031.9 ppb
2021-06-02DBP 20061913635.6 ppb
2021-09-08300053894 30005389530.2 ppb
2021-09-08300053900 30005390134.0 ppb
2021-09-08300053903 30005390433.3 ppb
2021-09-22300065698 30006569937.0 ppb
2021-12-01D300110687 30011068838.1 ppb
2021-12-01D300110684 30011068537.3 ppb
2021-12-01D300110681 30011068232.4 ppb
2021-12-01D300110678 30011067936.6 ppb
2022-03-02D300151783 30015178428.3 ppb
2022-03-02D300151786 30015178727.1 ppb
2022-03-02D300151789 30015179025.4 ppb
2022-03-02D300151792 30015179328.3 ppb
2022-06-01D300192098 30019209927.9 ppb
2022-06-01D300192101 30019210222.6 ppb
2022-06-01D300192104 30019210526.8 ppb
2022-06-01D300192107 30019210827.5 ppb
2022-09-14D300244033 30024403419.9 ppb
2022-09-14D300244027 30024402815.4 ppb
2022-09-14D300244024 30024402518.7 ppb
2022-09-14D300244030 30024403118.1 ppb
2022-12-07D300282718 30028271926.9 ppb
2022-12-07D300282721 30028272224.4 ppb
2022-12-07D300282724 30028272527.3 ppb
2022-12-07D300282727 30028272827.8 ppb
2023-03-16D300321892 30032189323.3 ppb
2023-03-16D300321895 30032189616.4 ppb
2023-03-16D300321898 30032189925.7 ppb
2023-03-16D300321901 30032190218.1 ppb
2023-06-14D300365450 30036545124.1 ppb
2023-06-14D300365456 30036545728.4 ppb
2023-06-14D300365453 30036545428.8 ppb
2023-06-14D300365447 30036544830.8 ppb
2023-09-06D300410877 30041087834.0 ppb
2023-09-06D300410880 30041088133.9 ppb
2023-09-06D300410883 30041088434.2 ppb
2023-09-06D300410886 30041088736.1 ppb
2023-12-07D300456855 30045685626.9 ppb
2023-12-07D300456858 30045685923.6 ppb
2023-12-07D300456861 30045686230.5 ppb
2023-12-07D300456864 30045686531.0 ppb