...over at Water Technology Online, the home for Water Technology Magazine. According to the Editor's note:

Starting with this issue, Water Technology® will provide each month basic information about a contaminant found in water sources. The contaminant may not necessarily be found in all geographic locations or situations, or at levels sufficient to raise concern.

Their inaugural column includes, amongst other things, the molecular structure of TCE:



In addition, the article includes details in the following categories:

Chemical formula
Molecular weight
Physical characteristics
Where found
Common uses
Potential health effects
Regulation
Common water treatment methods

It's a quick reference and a good overview. Check it out here.