I see what you mean but take away all of those things and you aren't left with many, or really any, options. Drinking water and nothing else won't keep you alive.
Steering clear of foods that are processed is a huge step in the right direction, and despite the pesticide notion you can't go wrong with fruit and veg. Let's face it pesticides aside they are still the nutritious foods that your body needs to stay healthy.
You can get meats that are 100% steroid free so you could look into that.
The truth is we can all scare ourselves half to death as to how foods may or may not be slightly inflicted by something, but if they were really that dangerous to you then people would be dropping like flies all around you, and you don't see that happening right?