The New York State department of health recommends that septic tanks should be pumped every two to three years or when the total depth of sludge and scum exceeds one-third of the liquid depth of the tank. However, a single person household may go longer between pumping and of course a large household of more than four adults may need more frequent septic system pumping.

Garbage disposals use should be avoided with a septic system, as they can produce large amounts of solids which bacteria are incapable of breaking down. Further, they can grind the food particles small enough that they pass through the septic tank into the leaching field, which can cause permanent damage. Regular use of a garbage disposal would shorten the time between pumping to one year.

The New York State department of health says the following about septic tank additives, "Septic tank additives are not recommended. Additives are unnecessary to the proper operation of household systems and may cause the sludge and scum in the septic tank to be discharged into the absorption field, resulting in premature failure . Some additives may actually pollute groundwater."

Waiting for a sign that you need to pump your septic tank is like waiting for a sign from your engine that it needs oil. By the time you see a sign it is to late and serious damage may have been done. Replacing a septic system cost more than replacing a car engine and if you think a bad engine can make a stink! The correct way of doing it is to keep good records of when you have had your septic system pumped or inspected and to have it pumped regularly every two to three years. Okay if you still want some signs then look for the following. You have wet or mushy ground around the tank or the drain field area. Sewage odors. Slow draining of your sinks, tubs, toilets or washing machine. Gurgling sounds from your plumbing. Your grass is greener in one particular area. Toilets, sinks, drains or washing machine are backing up.