Know Your Environment. Protect Your Health.

Chloroform

Terrell County Water Control and Improvement District 1

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was based on 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 fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-08-22AE38149ND
2018-08-22AE38153ND
2018-08-22AE38059ND
2019-05-09AE65653ND
2019-05-09AE65705ND
2019-05-09AE65707ND
2020-09-17AF27726ND
2020-09-17AF27757ND
2020-09-17AF27759ND
2021-07-20AF62627ND
2021-07-20AF62673ND
2021-07-20AF62667ND
2022-05-19AF97680ND
2022-05-19AF97762ND
2022-05-19AF97768ND
2023-09-20AG57047ND
2023-09-20AG57080ND
2023-09-20AG57086ND