Common Issues Found During Septic Tank Inspections

If you’ve ever scheduled a septic inspection, chances are you’ve heard something like, “We found a few issues with the tank.” That’s because, more often than not, we do find something wrong. It’s rare that a septic tank is in perfect working order — and that’s not necessarily due to neglect. These systems are buried, largely out of sight and out of mind, and even normal use over time can cause wear and tear.

In this post, we’ll walk you through the most common problems we find during septic inspections and why they matter.

1. Broken or Missing Tank Lids

One of the first things we check is the condition of the tank lid. A broken or missing lid is not just a minor inconvenience — it’s a serious safety hazard. Not only can it allow debris, animals, or even people to fall in, but it can also let in rainwater, which overloads the system. Tank lids should be secure, intact, and designed to withstand the elements.

2. Deterioration of Outlet Tees

The outlet tee is a critical part of your tank that helps control the flow of wastewater into the drain field. Over time, these fittings can degrade, especially if they’re made of older materials like concrete or cast iron. A deteriorated or missing outlet tee can allow solids to enter the drain field, leading to costly system failure.

3. Cracks and Holes in the Tank

Concrete septic tanks, especially those that are decades old, can develop cracks or even large holes due to shifting soil, tree root intrusion, or long-term water damage. These openings can cause untreated wastewater to leak into the surrounding soil or groundwater, posing environmental and health risks.

4. Broken Baffle Walls

Baffles are internal walls in the septic tank that slow down wastewater and help separate solids from liquids. If these are broken or missing, solids may exit the tank too quickly, overloading the drain field. This can lead to backups, foul odors, or even a complete system failure.

5. Tree Root Intrusion

Roots are a common issue in septic systems — especially if there are trees or shrubs planted too close to the tank. Roots seek out moisture and can force their way into tanks through small cracks or joints. Once inside, they can cause blockages, structural damage, and ongoing maintenance headaches.

Final Thoughts

Septic systems are out of sight, but they should never be out of mind. Regular inspections are the best way to catch problems early — before they become major repairs or replacements. If you’re buying a home with a septic system or haven’t had yours inspected in a while, it’s worth scheduling a professional evaluation. In our experience, it’s rare that we walk away from a tank inspection without finding at least one issue. But identifying those issues early is the first step toward keeping your system healthy and functional for years to come.

Also note that Quality Home Consultants has a Septic Maintenance Program to help you maintain your septic tank and provide discounts for any future septic repairs that come up!