There are a wide range of opinions about using a garbage disposal if you are on a septic system. These opinions range from those who maintain that garbage disposals should never be used on a septic system to those who believe that garbage disposals actually help septic systems work properly.
It can be a challenge to make sense of these conflicting opinions, but EPA research indicates that garbage disposals place an additional burden on septic systems. The best answer is probably that most properly sized and maintained septic systems can handle this extra load imposed by use of garbage disposals, especially if the homeowner has the septic tank inspected regularly and pumped when needed. About a quarter of the 27 million residential septic systems in use in the United States have garbage disposals and there is no empirical data that shows a significantly higher rate of septic system failure with these systems.
Not surprisingly, most garbage disposal manufacturers take the position that garbage disposals do not harm septic systems. In fact, some disposal manufacturers market garbage disposal models specifically designed for use on septic systems. These disposals work just like conventional garbage disposals except that they have a cartridge attached that injects natural microorganisms into the drain whenever waste is ground.
These microorganisms help break down the food waste and reduce the level of solid material in the septic tank. Other than having to replace the cartridge every few months, these special septic models don’t require any additional maintenance or care than a conventional model. A reputable plumber who handles kitchen repairs can help you choose and install a great new garbage disposal.
