ground-penetrating radar septic

A Step-by-Step Guide to Finding the Septic Tank on Your Property

Locating Your Septic System: A Step-by-Step Guide to Finding the Septic Tank on Your Property


One of the first steps in maintaining a septic system is locating the tank itself. Whether you’re a new homeowner or just never had the need to find it before, knowing where your septic tank is buried is crucial for inspections, maintenance, and any necessary repairs.

Understanding the Septic System Layout

  • Consult Property Records: Begin by checking your home’s property records, building plans, or septic system installation reports, which often indicate the location of the septic tank.
  • Follow the Pipes: The main sewer line from your house typically leads straight to the septic tank. Locating this line in your basement or crawl space can provide a direct route to the tank.

Practical Steps to Locate the Tank

  1. Visual Inspection: Look for signs on your property, such as a slightly raised or depressed area, which often signals where the tank might be buried.
  2. Use a Probe Rod: Gently probing the ground along the presumed path of the sewage pipe can help find the tank. Be careful not to damage the tank or pipes.
  3. Seek Professional Help: Septic service companies have specialized tools like electronic locators or ground-penetrating radar to pinpoint the tank’s location without digging.

What Not to Do

  • Avoid Random Digging: Don’t start digging up your yard without a clear indication of where the tank is located. This can cause unnecessary damage to your lawn and septic system components.
  • Don’t Ignore Safety: Never attempt to open a septic tank alone. Toxic gases and the risk of falling in are serious dangers.


Finding your septic tank may require a bit of detective work, but it’s a critical step in effective septic system management. With a combination of home records, visual cues, and some careful probing—or with the help of professionals—you can locate your septic tank without turning your yard into an excavation site.