You need a permit before installing a septic system in Taylor County

Outside sewer service, the septic question comes before the house pad. Taylor County's Environmental Department applies the state OSSF rules in the county. Every facility needs an on-site sewage facility permit. That includes repairs, changes, additions, and new systems.

TCEQ sets the bigger Texas rule. A permit and approved plan are required to build, change, repair, extend, and operate an OSSF. The local permitting office reviews the application. A licensed site evaluator or professional engineer checks the lot, soil, disposal area, and other siting details before approval.

That is the build-or-wait point on rural Taylor County land. A pretty tract can still need a different system after the soil check. An unpermitted system can become a compliance problem instead of a shortcut. As of June 27, 2026, the Environmental Department office is listed at 400 Oak Street, Suite 107 in Abilene, phone 325-674-1393. Keep the OSSF permit with the driveway, floodplain, and development papers.