# Free tools

Free tools for septic system service companies: tank pumping, inspections, installation, repairs, aerobic treatment unit maintenance and drain field repair. You need no account.

- [Septic pumping interval estimator](https://septics.fyi/tools/septic-pumping-interval.md): Look up a published tank size and household estimate. Confirm the schedule with an inspection.
- [Septic system type explainer](https://septics.fyi/tools/septic-system-type.md): Compare your system records with EPA definitions for conventional, aerobic and mound systems.