How close can you build an addition to a septic system?

The distance you can build an addition to a septic system typically depends on local regulations and health codes, which can vary by state or municipality. Generally, it's recommended to maintain a distance of at least 10 to 20 feet from the septic tank and leach field to ensure proper drainage and prevent contamination. Always check with your local health department or building authority for specific guidelines and requirements before proceeding with any construction.