Perc Test by County

Tools

Free tools

The planner helps you get oriented before you call, apply, or buy land.

Perc test planner

Pick your state to see who regulates septic permits, who can do the soil evaluation, the official application page and the usual steps from test to permit.

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How our tools work

The Perc Test Planner is a browsing aid that helps you narrow the likely regulator and next steps by location. It is designed to speed up research, not replace the final answer from the office that issues or reviews the permit.

Start with the property location, not the mailing address. If a ZIP crosses county lines, use the county result and double-check the parcel's actual jurisdiction.

Then use the page as a checklist: regulator, evaluator, application page, fees if published, and usual next steps. If anything looks unclear or outdated, contact the official office before you spend money.

Nothing you type into a tool is saved on our servers unless the tool says so. Letter builders and checklists run entirely in your browser.