Cold Water Extraction

[GeorgeJung69]

Here is the hypothetical situation:
Say I have 8 hydrocodone pills (5 mg hydrocodone; 500 mg acetaminophen).
I want to use cold water extraction to filter out the 4,000 mg of acetaminophen and leave the 40 mg of hydrocodone in a drinkable solution. Say I used a regular glass of water and added the crushed pills to the water and then poured the solution into another cup with a coffee filter attached to the top. In this example the solution was no good. What could possibly be going wrong? Too much water perhaps? If so how much?