How to Replace a Septic Tank Filter

Photo credit: Bigstockphoto
Photo credit: Bigstockphoto

A septic tank filter regulates the flow of drainage of the septic tank system. Usually, the filter is installed inside the baffle of the tank. The filter has to be cleaned regularly to prevent waste from clogging up the septic tank.

To maintain a properly functioning septic tank, the filter has to be cleaned at least once per year. Also, keep the sewers free from debris that could clog up your septic tank. The septic tank should be free from buildup so it has to be pumped periodically to remove solid substances. If not, the septic tank will become clogged and water will overflow to the yard. If you have children, keep flush toys away from the yard so they do not end up in the sewer.

Before moving forward with the project, you want to make sure that the system requires a new filter. Below are signs that your septic system needs a new filter:

The most common signs of a clogged septic tank filter are sluggish drainage and high effluent levels in the system. An abnormally dry drain field could also point to a dirty or a damaged septic tank filter.

Although we recommend letting a professional handle the cleaning for you, you can clean or replace a septic tank filter on your own. To find out how, check our step-by-step guide on replacing a septic tank filter:

You will need:

A screwdriver
A hose
A pair of gloves
Dust mask and protective eyewear

Step 1: Remove the Access Lid

Most septic tanks come with an access lid. This lid is meant to protect the system from children and reduce accidents. To replace the filter, you’d have to remove the access lid using a screwdriver. Just unscrew the screws that hold the lid in place to get to the filter. Once the access lid is lifted, you should see the filter inside.

Step 2: Remove the Filter

Because the septic tank is full of waste and feces, you’d have to wear a safety gear so you don’t inhale the fumes or get anything in your mucous membrane. Once the access lid is open, look for a T-shaped pipe. This pipe is called a baffle pipe. The filter should be housed inside it.

Step 3: Cleaning the Filter

After locating the filter, remove it and put it in a place where the waste will not fall on anyone. Hose it down until the filter is free from waste. As you clean the filter, do not remove your face mask and your protective eye gear. You do not want particles of waste ending up on your eyes or mouth! You can also hose down the septic tank to remove accumulated waste.

Step 4: Installing the New Filter

After giving your septic tank a good hose down, you can proceed with the installation of the new filter. Slip the replacement filter on the right place and secure it. Re-assemble the baffle pipe once you are done. Then, screw the access lid securely over the pipe. Make sure the access lid is put back securely for your safety.


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