Jun 19, 2025
When it comes to maintaining your septic system in good condition, most people consider factors such as regular septic pumping, using the correct toilet paper, and avoiding the improper disposal of grease. However, one thing many homeowners often overlook is the septic tank filter. If you're wondering whether your tank has one or even needs one, this guide is here to help. Customers often ask Septic Blue of Charlotte about how frequently to clean or check their septic filter. While many people remember to schedule septic pumping every few years, not everyone knows that there is a filter that also requires attention.
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A septic tank filter is a small yet vital component of your system. It’s located at the outlet of your septic tank, right before the wastewater moves on to the drainfield. Its job? To catch solid waste that didn’t break down in the tank.
Think of it like a strainer in your kitchen sink. It helps keep the rest of your system clear by stopping clumps or other debris from traveling too far. Without a filter, your drainfield could clog up, leading to major repairs—or even complete system failure.
Nope, not all systems have them. Older septic systems may not include a filter at all. But newer systems almost always come with one because it's now considered best practice. If your home was built before the mid-1990s, there's a chance your septic system doesn’t have a filter unless one was added later.
You can ask a septic company to inspect if you’re unsure. It’s usually a quick inspection during your regular septic service.
Filters may be small, but they help in big ways:
Skipping filter maintenance is one of the top reasons why septic systems fail. Even if you’re keeping up with septic cleaning, a clogged filter can prevent the entire system from functioning properly.
Good question! Most filters require cleaning every time your tank is pumped, which is typically every 3 to 5 years. However, some filters get dirty faster, especially if your family uses a lot of water or flushes things they shouldn’t.
A trusted septic company can recommend the optimal schedule for your home's septic system. If you experience frequent backups or slow drains, it could be a sign that your filter is already clogged.
Septic Blue of Charlotte recommends checking your filter between pumpings if you notice gurgling sounds or smells near your yard or drains. It’s better to be safe than sorry.
Technically, yes. But it’s not the cleanest job.
You’ll need gloves, a hose, and probably a mask—the smell can be intense. The filter is pulled out of the tank and rinsed until all the debris is removed. Still, most homeowners prefer to let the pros handle it during their regular septic service.
If you’re unsure where your filter is located or how to access it, it’s best to contact a septic company. Trying to find it on your own could damage other parts of the tank or result in a smelly mess.
Without a filter, your system has to work harder. Solids that should stay in the tank might reach your drainfield and clog the soil. When that happens, water can back up into your home or bubble up in your yard.
Replacing a drainfield is one of the most expensive services for a septic system, so it’s worth installing a filter if your system doesn’t already have one. Septic Blue of Charlotte has installed filters on older systems for many homeowners, and the difference in performance is noticeable.
Here are some clues your filter might need attention:
These are also signs that it may be time for septic cleaning or a full inspection. Don’t ignore them—small issues can turn into big ones fast.
A septic filter may not seem like a significant concern, but it’s one of the most effective tools for protecting your system. It keeps your drainfield safe, helps your tank run more smoothly, and catches things that shouldn’t be flushed.
Whether your system is brand new or decades old, a quick check with your local septic company can help you determine if your filter is functioning properly or if you even have one. Septic Blue of Charlotte recommends regular maintenance, not just for your tank, but for every part of your septic setup.
If it’s been a while since your last septic pumping or if you’ve never had your filter checked, now’s the time. Don’t wait for a backup or bad smell to take action. Contact your local experts to schedule a filter check, inquire about septic cleaning services, or book your next septic service appointment. Septic Blue of Charlotte is here to help you keep things flowing the right way—clean, easy, and stress-free.
