The answer to 'why is my septic tank clogged' is that there are several common causes, including a buildup of solid waste, improper use of the system, and problems with the drain field. Symptoms of a clogged septic tank can include slow draining sinks and toilets, gurgling sounds, and sewage backups.
Some solutions for a clogged septic tank include having the tank pumped and inspected by a professional, avoiding putting non-biodegradable items down the drain, and ensuring the drain field is clear and unobstructed. In many cases, it's best to call a licensed septic system professional to diagnose and resolve the issue, as attempting DIY repairs can be dangerous and may cause further damage.