Know Your Environment. Protect Your Health.

Trichloroacetic acid

Cape San Juan Water District

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.375 ppb41ND - 1.50 ppb
2020N/A00N/A
2021ND40ND
20220.367 ppb31ND - 1.10 ppb
2023ND40ND

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
2018-03-26ND
2018-06-18ND
2018-09-26ND
2018-12-26ND
2019-03-06ND
2019-06-25ND
2019-09-231.50 ppb
2019-12-18ND
2021-03-244094736ND
2021-06-074166286ND
2021-09-214186806ND
2021-12-214227212ND
2022-03-234261529ND
2022-06-204302575ND
2022-09-2743570011.10 ppb
2023-03-164432440ND
2023-06-134468909ND
2023-09-184521644ND
2023-12-104561778ND