Just how green are garbage disposals anyway? Theoretically, garbage disposals grind up food waste in little bits which gets returned to nature, and all is well. Apparently, that's not exactly how the process works. According to The Grinning Planet, garbage disposals tend to do more harm to the environment: wasting water and adding more volume to sewage treatment facilities (which, in turn, removes any of the food that could be beneficial to nature).
[ Photo from Curbly.com ]
The Grinning Planet also advises that if you're intent on giving back to nature, the much more effective solution is composting. But if that's not conducive where you live (or how you live), then try to put as much food waste in the garbage can.
Read more about it on their site.