In some instances it may be possible to move the septic tank out of the way if you are installing an inground pool. The best person to advise on this would be a septic system inspector or installer familiar with your area and state regulations.
It is important to do your research and get the necessary permits and approvals before beginning any major construction or excavation on your property.
Here is a general idea of the steps involved:
1. Make a plan. A septic system is complex and if it is not done properly it could create a health hazard. If you choose to do the work yourself, first obtain detailed diagrams and installation instructions for your specific septic system. If necessary, hire a licensed engineer or septic professional to design and oversee your project.
2. Locate your septic tank and drainfield. Digging to locate your tank and drainfield can be dangerous. First, call your local utility company to mark all hidden lines. The septic tank is usually the largest item in the septic system and is either made of concrete or polyethylene. The drainfield is a network of perforated pipes buried in the ground.
3. Calculate how far the septic tank and drainfield need to be moved. This will depend on your property and the size of your pool.
4. Remove existing pipes and wires.
5. Disconnect the septic tank from the house.
6. Excavate the septic tank and drainfield.
7. Transport the septic tank and drainfield to their new location.
8. Reinstall the septic tank and drainfield and reconnect the plumbing system.
5. Install the new septic tank and drainfield in the desired location.
6. Backfill the area around the septic tank and drainfield.
7. Landscape and restore the area.
This procedure requires excavation equipment, detailed knowledge of drainage and sewage, plumbing skills and a familiarity with local regulations. Hiring a professional to move a septic tank is almost always a better option.