Most septic clogs are preventable. They typically stem from what is flushed or poured down the drain:
These are T-shaped pipes inside the tank. The inlet baffle can get blocked by "flushable" wipes or grease, preventing waste from entering the tank. The outlet pipe can clog if the tank isn't pumped regularly, allowing solid waste to flow out toward the drainfield. The Main Sewer Line clogged septic system
Have your system inspected every 1–3 years and pumped every 3–5 years, depending on your household size. Most septic clogs are preventable