DIY Septic Tank Detection: A Step-by-Step Guide Using a Metal Detector

Finding a septic tank can be a daunting task, but with the right tools and techniques, it can be a straightforward process. One effective method for locating septic tanks is using a metal detector. Metal detectors detect metallic objects buried underground, making them ideal for finding septic tanks, which typically have metal components.

Materials Required

• Metal detector
• Shovel
• Measuring tape
• Stakes or flags
• Safety gear (gloves, safety glasses)

Step-by-Step Guide to Finding Septic Tank with Metal Detector

1. Determine the General Location

Before you start detecting, gather information about the property’s history and layout. Check with the local building department or previous owners to determine the approximate location of the septic tank.

2. Scan the Area

With the metal detector turned on, start sweeping the ground in a grid pattern. Hold the detector parallel to the ground, about 2-3 inches above the surface. Listen for a consistent beep or signal that indicates the presence of metal.

3. Mark Potential Locations

As you detect positive signals, mark the locations with stakes or flags. These will help you narrow down the search area.

4. Dig Shallow Test Holes

Using a shovel, dig shallow holes (about 6-12 inches deep) at each marked location. Check the soil for any signs of a septic tank, such as pipes, concrete, or gravel.

5. Probe for Tank Depth

If you find evidence of a septic tank, use a long metal rod or probe to determine the depth of the tank. Carefully insert the probe into the hole and push it down until you feel resistance. Measure the depth of the probe to estimate the tank’s depth.

6. Determine Tank Size

Using the probe, explore the perimeter of the tank to determine its size. Mark the corners or edges of the tank with stakes or flags.

7. Expose the Tank

Once you have located and outlined the septic tank, use the shovel to carefully remove the soil covering it. Expose the tank’s lid or access point for further inspection.

Tips for Success

• Use a high-quality metal detector with good sensitivity.
• Sweep the ground slowly and thoroughly to avoid missing any signals.
• Dig test holes even if the metal detector doesn’t indicate the presence of metal, as some tanks may be buried deeper.
• Be patient and persistent. Finding a septic tank can take time and effort.
• Always wear safety gear when digging or handling heavy equipment.

Troubleshooting

• No Signal Detected: Make sure the metal detector is turned on and functioning properly. Check for loose connections or dead batteries.
• Multiple Signals: If the metal detector is picking up multiple signals, try reducing the sensitivity or using a discrimination mode to filter out unwanted objects.
• Incorrect Depth: The probe may not be pushed down far enough or may be hitting other objects. Try probing from different angles or using a longer probe.

Final Thoughts

Finding a septic tank with a metal detector is a feasible and effective method. By following these steps and using the recommended tips, you can locate your septic tank accurately and efficiently. Remember to always prioritize safety and consult with a professional if needed.

Frequently Asked Questions

1. Can I use any type of metal detector to find a septic tank?

Not all metal detectors are suitable for locating septic tanks. Choose a detector with good sensitivity and discrimination capabilities.

2. How deep can a septic tank be buried?

Septic tanks are typically buried 2-4 feet underground, but they can be deeper in some cases.

3. What should I do if I find the septic tank but it’s full?

Contact a licensed septic tank professional for pumping and maintenance. Do not attempt to pump the tank yourself as it can be dangerous.