The answer to 'septic tank making noise' is that a noisy septic tank can indicate a problem that requires attention. Common causes include a buildup of solids, a failing septic pump, or issues with the drain field. Symptoms may include gurgling sounds, foul odors, or slow draining fixtures.
If your septic tank is making noise, it's important to have a professional plumber or septic service technician inspect the system. They can diagnose the underlying issue and recommend the appropriate solution, whether that's pumping the tank, repairing the pump, or addressing problems with the drain field. Attempting DIY repairs on a septic system can be dangerous and may cause further damage, so it's best to leave this to the professionals.