Similar term(s): trichloromethane, methyl trichloride.
CHCl3: Chloroform is an organic compound part of the trihalomethane. It is colorless and has a pleasant, nonirritating odor with a slightly sweet taste. Chloroform evaporates easily into the air and dissolves easily in water.
It is derived primarily from various industrial and chemical processes, or as a by-product of disinfecting water with chlorine. Chloroform is largely present in drinking water. Although it is both a man-made and a naturally occurring compound, human activity is responsible for most of the chloroform found in the environment.
For more information about chloroform and its potential effect on the health see:
WHO Guidelines for drinking water quality
Chlorine - Natural organic matter - Water disinfection by-product(s)