There are a lot of variables to how often you pump your septic system, such as the number of people in the home, the amount of water used, garbage disposal use, the size and age of the tank. The size of the septic tank should be determined by the number of bedrooms in the home. For an average home, the following is recommended for pumping your septic tank:
Household with 1 Person: Every 5 years
Household with 2 People: Every 4 years
Household with 3 People: Every 3 years
Household with 4 to 5 People: Every 2 years