Inspection Scheduling:
- A licensed installer should call Williamson County Engineer's office at 512.943.3330 to schedule an inspection for the next available business day.
- Representatives will ask for your installer number, license expiration date, and phone number, and will then confirm a scheduled inspection.
Note: Williamson County Engineer's office inspectors will contact installers to confirm appointment the morning of the inspection.
- If there will be an apprentice on-site, their contact information will also be needed.
- The installer is expected to be present at the job site with inspection equipment for surveying construction elevations.
Required System Inspections:
For most system types the permit application will allow for two inspections during critical phases. Additional inspections can be requested for an additional fee. Inspection schedules for different types of systems are listed below:
- Standard/Leaching Chamber/Evapotranspiration Bed
- 1ST: Tank/Pipe & Gravel
- 2ND: Final/ Landscape
- Aerobic Surface Application
- 1ST: Open Tank and Lines
- 2ND: Final/Electrical/Landscape
- Aerobic Drip Irrigation
- 1ST: Open Tank and Lines
- 2ND: Final/Electrical/Landscape
- Mound/Low Pressure Dose
- 1ST: Tank/Mound Pad
- 2ND: Final/Electrical/Landscape
- Soil substitution
- 1ST: Tank & Excavation
- 2ND: Pipe & Gravel
- 3RD: Final/Electrical/Landscape