How Do I Find My Septic Tank?

Short answer: Start with permit and property records, then use physical clues and professional locating methods. Do not randomly excavate near utilities or probe aggressively around buried components.

Check records first

EPA recommends keeping septic permit, design, installation, pumping, and inspection records. Your local health or environmental department may have a permit sketch or site plan.

Look for access points

Risers, lids, cleanouts, and the building sewer route can help a professional narrow the location. Older systems may have buried lids without visible risers.

What to verify locally

Permitting, inspection, setbacks, acceptable system types, professional licensing, and design requirements are controlled by state and local authorities. If your question affects construction, a property purchase, a repair, or drinking-water safety, confirm the answer with the local health/environmental department.

Primary reference

U.S. EPA — Frequent Questions on Septic Systems ↗

U.S. EPA — How to Care for Your Septic System ↗

Reviewed August 26, 2026.