If you are not on a sewer system, then you are likely on a septic system. As with most things, a little maintenance can go a long way and help prevent potentially expensive (and smelly) problems. A still pertinent ten-year-old article by the National Environmental Services Center says, “Septic system maintenance is often compared to automobile maintenance because only a little effort on a regular basis can save a lot of money and significantly prolong the life of the system.” See their comprehensive Homeowners Guide to Maintaining Your Septic System.