Know Your Environment. Protect Your Health.

Chloroform

Prairie Hill Water Supply Corporation

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
2018-02-28Q1808375001ND
2018-05-16Q1820016001ND
2018-05-16Q1820016004ND
2019-03-06Q1909672004ND
2019-06-18Q1937231003ND
2019-06-18Q1937231004ND
2020-02-04Q2004537001ND
2020-07-27Q2029176003ND
2020-07-27Q2029176004ND
2021-02-01Q2102880009ND
2021-05-18Q2112934003ND
2021-05-18Q2112934004ND
2022-08-22Q2224811003ND
2022-08-22Q2224811004ND
2022-12-14Q2237889001ND
2023-05-30Q2319930003ND
2023-05-30Q2319930004ND
2023-09-19Q2340255002ND