After installing a septic system, you’ll need to perform regular maintenance to ensure it keeps working properly. Here are a few signs that your septic system might be failing.Slow drains - Slow-draining sinks, toilets, and showers could be a sign your septic tank is full or backed up.Bad smell in the yard - If you notice a bad smell (like sewage) when outside your home, it could be a sign that the septic tank is full.Pooling water in the yard —If your septic tank is filling up and you continue using your plumbing inside, septic run-off could pool up in your yard.More insect activity - An increase in bug activity, like flies and mosquitoes, could mean something is wrong with your septic tank.Gurgling pipes - If your septic tank gets clogged, air will get trapped in your pipes, which can cause a gurgling or “burping” sound when you use your plumbing.Waste backups in the house - The worst-case sign of septic tank failure are clogs and waste backups in your home's toilets, sinks, showers, and drains.If you notice any of these signs, you should call a specialist to inspect your septic system. Though you can install a septic system by yourself, the bacteria within an active septic system can be hazardous. A septic specialist will know the best way to handle any issues.