Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Hemphill

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)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.950 ppb43ND - 1.70 ppb
20191.15 ppb43ND - 2.30 ppb
20201.08 ppb441.000 ppb - 1.30 ppb
20210.375 ppb41ND - 1.50 ppb
2022ND40ND
20230.625 ppb42ND - 1.30 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
2018-02-21Q18076190031.000 ppb
2018-06-13Q18238200011.70 ppb
2018-08-27Q18343660011.10 ppb
2018-12-12Q1851663001ND
2019-01-09Q19014140092.30 ppb
2019-04-04Q19138670011.20 ppb
2019-07-01Q1941622003ND
2019-10-08Q19720520011.10 ppb
2020-01-23Q20028040051.30 ppb
2020-04-06Q20140000011.000 ppb
2020-08-06Q20312030031.000 ppb
2020-12-07Q20486190011.000 ppb
2021-03-16Q2106924005ND
2021-05-18Q21129870021.50 ppb
2021-08-23Q2122801003ND
2021-10-27Q2130277001ND
2022-01-24Q2202260009ND
2022-04-18Q2211729001ND
2022-08-01Q2221878004ND
2022-10-11Q2230679001ND
2023-01-05Q2300645005ND
2023-05-10Q2317940001ND
2023-07-25Q23294900031.30 ppb
2023-10-30Q23463700011.20 ppb