Know Your Environment. Protect Your Health.

Trichloroacetic acid

Harris County MUD 490

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.80 ppb117.80 ppb
20197.50 ppb117.50 ppb
20204.50 ppb114.50 ppb
20219.80 ppb119.80 ppb
2022ND40ND
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
2022-07-27AG06621ND
2022-09-19AG13510ND
2022-09-19AG13551ND
2022-11-22AG19601ND
2023-01-26AG26436ND
2023-04-05AG35554ND
2023-07-10AG47522ND
2023-10-18AG60243ND