Know Your Environment. Protect Your Health.

Trichloroacetic acid

Town of Westlake

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
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
2018-01-11Q1801597001ND
2018-04-05Q1814143001ND
2018-07-02Q1826219001ND
2018-10-01Q1839294001ND
2019-02-13Q1906588002ND
2019-04-11Q1914730001ND
2019-08-01Q1950108001ND
2019-11-21Q1977743001ND
2020-03-03Q2007953001ND
2020-05-21Q2020448001ND
2020-09-01Q2034839001ND
2020-11-04Q2042942001ND
2021-02-08Q2103716001ND
2021-04-27Q2110661001ND
2021-08-02Q2120008001ND
2021-10-04Q2127133001ND
2022-01-06Q2200432002ND
2022-04-07Q2210851001ND
2022-07-11Q2219179001ND
2022-10-03Q2229802001ND
2023-01-26Q2303746001ND
2023-04-24Q2315259002ND
2023-08-17Q2334675001ND
2023-10-25Q2346055001ND