The list is extremely long. For starters, let’s limit it to what is typically tested in water. Navigate to:
http://newenglandtesting.com/publications/methods.htmYou will see at the top that you can view drinking water, wastewater and groundwater.
The parameters under drinking water include organics and are tested as required under the Federal Primary Drinking Water Standard (40CFR149)
The wastewater also includes organics and these are tested under the Clean Water Act.
Finally, groundwater parameters include organics and are tested for a variety of reasons.
These lists are still not complete because they are limited to what this particular lab does.
I recommend you narrow your topic to say drinking water and consult 40CFR149.