New Septic System Installation Process

Installing a new septic system is a significant investment that requires careful planning and professional expertise. Understanding the process helps you prepare and know what to expect at each stage.

Phase 1: Planning and Permits

Site Evaluation

The process begins with a comprehensive site evaluation including:

• Soil percolation tests (perc tests)
• Soil composition analysis
• Groundwater level assessment
• Topography and drainage evaluation
• Setback requirements from wells, property lines, and structures

System Design

Based on site conditions and household needs, engineers design a system that includes:

• Tank size and type selection
• Drain field layout and sizing
• Distribution system design
• Any required advanced treatment components

Permit Application

Required permits typically include:

• Septic system installation permit
• Excavation permits
• Environmental compliance permits
• Building permits (if applicable)

Phase 2: Pre-Installation

Utility Marking

All underground utilities must be marked before excavation begins. This includes:

• Electric lines
• Gas lines
• Water lines
• Telecommunications cables

Site Preparation

The installation area is prepared by:

• Clearing vegetation and obstacles
• Establishing access routes for equipment
• Protecting existing landscaping where possible
• Setting up temporary facilities if needed

Phase 3: Installation

Excavation

Professional excavation includes:

• Digging the septic tank hole to precise specifications
• Excavating trenches for distribution pipes
• Creating the drain field area
• Ensuring proper grades and slopes

Tank Installation

The septic tank installation involves:

• Preparing a level, stable base
• Carefully positioning the tank
• Installing inlet and outlet baffles
• Connecting inlet and outlet pipes
• Installing access risers and lids

Distribution System

Installing the distribution components:

• Setting the distribution box
• Installing distribution pipes
• Ensuring proper pipe slopes
• Installing any required pumps or controls

Drain Field Construction

Building the drain field involves:

• Laying gravel beds to specification
• Installing perforated distribution pipes
• Covering pipes with additional gravel
• Installing filter fabric
• Backfilling with appropriate soil

Phase 4: Testing and Inspection

System Testing

Before final approval, systems undergo:

• Water tightness testing
• Flow testing
• Electrical system testing (if applicable)
• Alarm system testing

Official Inspections

Required inspections typically include:

• Pre-backfill inspection
• Final installation inspection
• Electrical inspection (if applicable)
• Environmental compliance inspection

Phase 5: Completion

Final Backfilling

After passing inspections:

• Complete backfilling of all excavated areas
• Proper grading for drainage
• Restoration of disturbed areas
• Installation of permanent markers

System Startup

Initial system operation includes:

• Filling the tank with water
• Testing all components
• Adjusting settings as needed
• Providing operation instructions

Timeline Expectations

Typical installation timeline:

• Planning and permits: 2-6 weeks
• Site preparation: 1-2 days
• Installation: 2-5 days
• Inspections: 1-2 weeks
• Final completion: 1-2 days

Cost Factors

Installation costs vary based on:

• System size and complexity
• Soil conditions
• Site accessibility
• Local permit fees
• Required advanced treatment

Choosing the Right Contractor

Select a contractor who:

• Is properly licensed and insured
• Has extensive local experience
• Provides detailed written estimates
• Offers warranties on work
• Has positive customer references

True Flow Septic has extensive experience with new septic system installations. Our team handles every aspect from initial site evaluation through final inspection, ensuring your new system is installed correctly and operates efficiently for years to come.