Know Your Environment. Protect Your Health.

Trichloroacetic acid

Kent Water Department

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.

 

80

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.583 ppb165ND - 2.81 ppb
20191.04 ppb169ND - 4.47 ppb
2020N/A00N/A
20210.284 ppb164ND - 1.31 ppb
20221.54 ppb165ND - 6.64 ppb
20230.505 ppb165ND - 2.66 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
2018-03-060.740 ppb
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-06-05ND
2018-06-05ND
2018-06-05ND
2018-06-05ND
2018-09-042.81 ppb
2018-09-041.78 ppb
2018-09-042.42 ppb
2018-09-041.57 ppb
2018-12-04ND
2018-12-04ND
2018-12-04ND
2018-12-04ND
2019-03-05ND
2019-03-052.48 ppb
2019-03-05ND
2019-03-05ND
2019-06-04ND
2019-06-041.21 ppb
2019-06-04ND
2019-06-041.11 ppb
2019-09-031.58 ppb
2019-09-03ND
2019-09-03ND
2019-09-031.37 ppb
2019-12-032.26 ppb
2019-12-034.47 ppb
2019-12-031.21 ppb
2019-12-031.000 ppb
2021-03-024085727ND
2021-03-024085726ND
2021-03-024085729ND
2021-03-024085728ND
2021-06-014126779ND
2021-06-014126778ND
2021-06-014126776ND
2021-06-014126777ND
2021-09-074179847ND
2021-09-074179849ND
2021-09-0741798481.31 ppb
2021-09-074179850ND
2021-12-0742243311.01 ppb
2021-12-0742243301.19 ppb
2021-12-0742243321.04 ppb
2021-12-074224329ND
2022-03-014260764ND
2022-03-014260762ND
2022-03-014260763ND
2022-03-014260765ND
2022-06-0743116326.13 ppb
2022-06-0743116305.28 ppb
2022-06-0743116275.12 ppb
2022-06-0743116296.64 ppb
2022-09-064370630ND
2022-09-0643706281.43 ppb
2022-09-064370629ND
2022-09-064370631ND
2022-12-064395872ND
2022-12-064395874ND
2022-12-064395871ND
2022-12-064395873ND
2023-03-0744360871.95 ppb
2023-03-0744360911.29 ppb
2023-03-074436088ND
2023-03-074436090ND
2023-06-064476297ND
2023-06-0644762962.66 ppb
2023-06-064476294ND
2023-06-064476295ND
2023-09-054525821ND
2023-09-0545258171.18 ppb
2023-09-0545258161.000 ppb
2023-09-054525820ND
2023-12-054569113ND
2023-12-054569116ND
2023-12-054569114ND
2023-12-054569115ND