How we research

Perc Test by County is published by Directory Assistance Group, an independent publisher of reference directories built from public records. This page explains where our information comes from, how pages are put together, and how we keep them current.

Sources

We use official county and state permit pages, health and environmental agencies, statutes, regulations, court and code materials, and other primary public sources. When available, we also note published fee schedules and official application forms.

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.

What we will not publish

We show a rule, fee, deadline, listing or figure only when an official or primary source publishes it, and we link that source. When a value says it is not published, it means we could not find an official source, not that no rule exists. We do not estimate numbers, invent statistics or quotes, or claim reviewers or credentials we do not have. We are not lawyers, engineers, doctors or government officials, and nothing here is legal, medical or professional advice.

Which pages we publish for search

Each state page is built from that state's own official sources and is offered to search engines only once those state-specific details are verified. Advice that applies everywhere lives once on this page and in our guides instead of being repeated on every state page.

Ads and paid placements

The site is free and supported by advertising. Advertisers do not choose topics or see pages before they go live. Any paid listing or sponsor is labelled as such, and payment never changes the official details we show.

Corrections

Spotted an error or a change? Tell us, with a link to the official source if you can. We confirm it, fix it, and note it on the site updates page. See also our editorial standards and about page.