Official sources checked August 29, 2026

Travis County, Texas septic permits and requirements

Texas permitting framework

Texas requires applicants to work with the local permitting authority where an authorized local OSSF program exists. TCEQ notes that local programs can be more stringent than statewide minimums, so county-specific procedures control within the county program’s jurisdiction.

Confirm county jurisdiction first

Travis County’s published OSSF process applies to development outside corporate city limits. The county directs applicants to verify the property jurisdiction before using the county permit workflow because incorporated areas can have different permitting authorities.

Soil evaluation and detailed application materials

The county residential OSSF process lists an OSSF soil-evaluation form, site and property information, a floor plan, and other project-specific documentation among the application materials. The commercial process similarly requires a soil evaluation and detailed plot/site information.

Maintenance affidavits and contracts for advanced systems

For systems requiring maintenance — including aerobic or advanced treatment and surface/drip irrigation systems — Travis County lists an affidavit to the public and, when applicable, a maintenance contract as required application documents.

Permit before construction and inspection scheduling

After approval, Travis County sends the permit electronically and requires it to be posted visibly at the work site before the project begins. OSSF inspections are scheduled through the county permitting system; the county says requests should be submitted before 2 p.m. on the preceding working day.

Repairs require an OSSF permit when the system is damaged or replaced

Travis County specifically instructs owners whose septic system is damaged or needs replacement to obtain a septic/OSSF permit. Repair projects should be routed through the county repair and OSSF application process rather than treated as ordinary maintenance.

Official sources

• Texas Commission on Environmental Quality — Getting a Permit for an OSSF
• Texas Commission on Environmental Quality — OSSF Licensing
• Travis County — Residential OSSF Permit
• Travis County — Apply for a Permit
• Travis County — Commercial OSSF Permit

SepticScope summarizes public-agency information for planning purposes. The permitting agency's current instructions control if they differ from this guide.