Septic tanks require pump-outs when the solids that accumulate in the tank begin to reach the tank’s storage capacity. The tank should be pumped when total solid accumulation is between 30% and 50% of the total capacity. We recommend pumping your septic tank every 3-5 years, more often if you have a garbage disposal.
Note the liquid level of the tank in relation to the tank’s outlet pipe. A liquid level below the outlet pipe usually indicates a tank leak. A liquid level above the outlet pipe can indicate a problem with the pipe to the drain field or the drain field itself.
Pump the tank from the end lids or manhole. Pumping from inspection ports may damage tees and baffles and may result in a less than complete pump-out. Watch for back-flow from the tank outlet pipe. Significant back-flow indicates a drain field system backup. A small amount of back-flow can indicate a sag in the pipe to the drain field. Pump the tank thoroughly. Use specialized cleaning tools and back-flush to loosen the sludge in the corners of the tank.
Check the empty tank and note any signs of structural damage such as an open weep hole, leaking midseam, damaged baffles, or cracks. Leave site in a sanitary condition.