If you are installing the tank yourself you need to excavate the hole for the septic tank approx. 24" longer and wider than the tank dimensions. The septic tank must be installed on a level, stable base that will not settle. The bottom of the hole must be level. If there are rocks visible then sand or pea gravel should be used to bed the tank hole.

When backfilling around the tank, the soil should be backfilled slowly and evenly around all four sides to insure the tank does not move. Backfill material should be clean and free of large rocks and debris. Special care should be taken backfilling around the concrete riser. Do not drive over the riser, it is not traffic approved.

Inlet and outlet fittings are pre-installed in the septic tank. Flex couplings are provided to attach to your inlet and outlet pipes. The septic tank must be installed with a watertight manhole riser extending to the ground surface or above. Risers and lids are pre-installed on the septic tank prior to delivery, so call in advance to order the size you require.

If the septic tank will be installed in an area with high ground water, the tank must be properly installed and weighted or provided with an anti-buoyancy device to prevent flotation.

Our dosing septic tank is designed to accept an "Orenco Pump and Vault Assembly" only. We can pre-install the pump assembly in the tank prior to delivery.

Quality Counts!  Don't let this happen to you. 

Collapsed tanks - Plastic on the left and metal on the right.