Do not cook it in water.
But I really do not understand your issue. Butter? Ground beef has plenty of fat...just fry it, season it and eat it. You don't have to drain it, though I do...its a little fatty even for me and that is a pretty high bar. Throw in some onions and minced garlic as it cooks. Or make a nice chili or taco salad with it.
But stay away from the water. Please. That cow died for you. Treat it with respect.