The answer to 'septic tank frozen' is that a frozen septic tank is a common issue for homeowners in cold climates. This happens when the ground around the septic tank freezes, preventing the tank and its components from functioning properly. The main symptoms are slow or backed-up drains, gurgling sounds from plumbing fixtures, and an unpleasant sewage odor near the septic tank.
The best solution is to thaw the frozen tank as soon as possible. This can be done by insulating the tank, running a heater near it, or using a septic tank deicer. However, if the tank is severely frozen or the problem persists, it's best to call a professional septic service technician to diagnose and fix the issue. Attempting DIY fixes on a frozen septic tank can be dangerous and may cause further damage.