Place your cat-hole site is at least 200 feet from any source of water Don’t dig in an area where water visibly flows (rain water run-off etc) Disperse the cat holes over a wide area if possible. If possible, setup your cat hole in an area that gets a lot of sunlight (this will aid decomposition) Again, remember water runoff. Your every thought should be on preventing feces from reaching any water source — be it underground well water, your water table, rivers, lakes, springs, and creeks.
For a longer-term sanitation solution, you’ll want to build yourself a trench latrine. A trench latrine is basically an oversized cat hole that is used multiple times. With the exception of dispersing it over a wide area, the same rules above apply to trench latrines as well.
Ensuring Clean Water Supply and Adequate Disposal of Waste Water through Professional Plumbers Infographic.
Food Waste is a major problem. Here's a tip: Use a Vacuum Sealer and refrigerate or freeze your leftovers and bulk buys. And be sure to label them! Vacuum sealing will dramatically increase the freshness of your foods. You will still have to be proactive and keep tabs on your fridge and freezer.