How Do I Know When My Septic Tank is Full?

This is a question we get asked from time to time.

Here’s the answer:

Your septic tank should always APPEAR full since it is simply a chamber that collects all the scum and sludge from your sewer and allows the gray water to pass through the tank into the drain field.

It’s standard operating level is normally 8-12 inches from the top of the tank.

Waste within your septic tank separates into three fairly distinct layers:

• Light fat particles floating on the top
• Gray water in the middle
• Heavy solids at the bottom of the tank

The heavy solids form the layer that is pumped from your tank by the septic company.

Remember:

‍Do NOT check your septic tank yourself!

Septic tanks can contain hazardous gases and bacteria and only qualified professionals should unseal them.

How Often Should I Pump My Tank?

Your tank needs to be pumped when the sludge and scum levels accumulate.

The normal interval is every 2-5 years.

This number varies due to household size, guest hosting, and septic usage patterns. Check out the PA state guidelines here.

Signs That Your Septic Tank Is Full

If you’re worried that your septic tank might be full, you’re not alone—many homeowners face this issue. But the good news is that addressing it early can prevent costly damage and hazards.

8 Signs of a Full Septic Tank:

1. Slow Drains and Backups: If all the sinks, overflows, and tubs in the house drain sluggishly, your septic tank could be struggling to manage wastewater.
2. Toilet Flushing Problems: If your toilet fails to flush completely or backs up frequently, your tank might be nearing capacity. Water backing up in other drains when you flush the toilet can also be a telltale sign of a full tank.
3. Gurgling Sounds: An unusual gurgling noise from pipes or drains can be a result of a full tank that is unable to disburse wastewater into the drain field. Of course, bubbling and gurgling pipes can also be an indicator of a blockage. Either way, it is best to call in a professional if your pipes are making odd noises.
4. Foul Odors: A strong sewage or rotten egg smell around your drains, yard, or near the septic tank itself is often a clear sign of an overfilled system. Do not ignore this. The primary gases in septic tanks – hydrogen sulfide and methane – can cause dangerous or even fatal health problems.
5. Drain Flies: Tiny flies known as drain flies or sewer gnats buzzing around bathroom, sink, and shower drains can be a sign of a full septic tank or a blockage in the drain pipes. These tiny insects, only about 1/8 inch long, feed and lay eggs on decaying organic matter.
6. Pooling Water: Unexplained puddles or damp areas in your yard near the drain field can indicate that your septic system is overflowing. This water can contain hazardous bacteria. Keep children and pets away and call a professional immediately if you see this issue.
7. Lush Grass Growth: Although lush, green grass is usually a good thing, an overly green or fast-growing patch of grass near the septic tank or drain field might signal leaking tank wastewater that is acting as unwanted fertilizer.
8. Time Since Last Pumping: If it’s been more than 3-5 years since your last septic tank pump, it’s likely due for service—even without noticeable issues.

Regular Septic Maintenance Is Key!

No matter how many people are in your household, regular septic maintenance is the key!

Contact RenewSource today and avoid big septic issues down the road!