New home installation – Pumping the tank should occur within 6 to 12 months of start-up. Often wastewater from a new home contains residues from painting, varnishing, staining and cleaning which reduce bacterial activity and increase the risk of solids damaging your soil dispersal system.
Established home – Pumping will be needed on a regular basis under normal use. When the tank is pumped, be present to observe the level of sludge and scum so you can adjust your cleaning schedule. Sludge should not rise higher than one-third the depth of your tank.
Septic tanks require bacterial action in order to function properly. Pumping your tank out every twelve months or less will negatively impact the efficiency of your system. If you must pump your tank more often than every 12 months you should increase your system capacity or decrease the wastewater sent to the system.
Seasonal Use – If the septic system receives little or no use during the cold months, do not pump the tank dry. It is best to leave about one foot of liquid in the tank to maintain the bacterial action that produces heat which reduces the risk of damage from freezing.