Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Puyallup

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.

 

76

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.406 ppb324ND - 3.80 ppb
20190.989 ppb204ND - 8.94 ppb
2020N/A00N/A
20213.03 ppb84ND - 10.3 ppb
20222.09 ppb84ND - 5.42 ppb
20232.48 ppb84ND - 5.55 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
2018-02-063.10 ppb
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-05-03ND
2018-05-033.80 ppb
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-072.50 ppb
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-273.60 ppb
2019-02-05ND
2019-02-05ND
2019-02-054.13 ppb
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-093.26 ppb
2019-05-09ND
2019-08-01ND
2019-08-013.44 ppb
2019-11-068.94 ppb
2019-11-06ND
2021-02-0440737293.88 ppb
2021-02-044073728ND
2021-04-2941094913.99 ppb
2021-04-294109490ND
2021-08-0541592746.08 ppb
2021-08-054159273ND
2021-11-124207496ND
2021-11-12420749910.3 ppb
2022-02-0142417925.00 ppb
2022-02-014241793ND
2022-05-104286858ND
2022-05-1042868592.96 ppb
2022-08-114363964ND
2022-08-1143639693.34 ppb
2022-11-0343747785.42 ppb
2022-11-034374777ND
2023-02-014411903ND
2023-02-0144119044.83 ppb
2023-05-0244527904.63 ppb
2023-05-024452791ND
2023-08-024507128ND
2023-08-0245071294.85 ppb
2023-11-024548887ND
2023-11-0245488845.55 ppb