Septic Installation
Septic System Installation in Nashville & Middle Tennessee
Installing a new septic system is one of the most important investments you'll make in your property. Whether you're building a new home in Franklin, replacing a failed system in Brentwood, or developing land in Davidson County, Prodigy Sewer & Drain delivers expert septic installation backed by decades of combined experience.
Our licensed team handles every detail—from initial soil testing and permit applications to final inspection and system startup. We bring the same trenchless technology expertise that sets us apart in sewer repair to every septic installation.
Our Installation Process
Step 1: Free Consultation & Site Evaluation
We visit your property to assess site conditions, discuss household needs, and review your budget. During evaluation, we identify potential drainfield locations, assess topography and drainage, and review setback requirements. This initial consultation is completely free.
Step 2: Soil Testing & Analysis
Professional soil testing includes percolation tests measuring drainage rates, soil profile analysis identifying layers and water table depth, and composition testing determining sand, silt, and clay percentages. These tests are required for Davidson and Williamson County permits.
Step 3: System Design & Permits
We design your septic system accounting for household size, soil absorption capacity, setback requirements, and local code compliance. We prepare all permit documentation and submit applications to the appropriate county authority. Permit approval typically takes 10-45 days.
Step 4: Professional Installation
Installation takes 3-5 days and includes precise excavation, tank placement and leveling, pipe installation with proper slope, drainfield construction, backfilling and grading, and riser installation for future maintenance. We protect your property throughout the process.
Step 5: Inspection & Startup
We coordinate all required county inspections before backfilling. Once approved, we provide as-built drawings, maintenance guidelines, warranty information, and county approval documentation.
Davidson County Requirements
Metro Nashville Health Department manages septic regulations for Davidson County properties through its Environmental Engineering Division.
Key Requirements:
- Septic System Construction Permit required
- 100 feet from private wells
- 50 feet from property lines
- 20 feet from foundations
- Minimum 1,000-gallon tank for 3-bedroom homes
- Professional soil testing required
Williamson County Requirements
Williamson County maintains separate regulations through its Department of Sewage Disposal Management. Recent amendments (March 2025) address advanced treatment systems and effluent filters.
Enhanced Requirements:
- Stricter soil testing protocols
- Advanced treatment systems in some areas
- Engineering stamps for alternative systems
- Multiple inspection stages
Septic Installation Costs
Cost Factors:
- Tank size and system type
- Soil and site conditions (rocky, clay, slopes)
- Permit and testing fees ($500-$1,500)
- Distance from house to drainfield
- Site preparation requirements
- Seasonal factors (dry vs. wet season)
System Type Pricing:
- Conventional systems: $3,500-$8,500
- Aerobic systems: $10,000-$20,000
- Alternative/engineered systems: $15,000-$50,000+
Our Transparent Pricing
We provide detailed written estimates breaking down all costs before work begins—no surprise charges or hidden fees. Estimates include system design, permits, materials, labor, equipment, backfill, grading, and warranty coverage.
Financing Available
We offer flexible financing options to qualified customers. Ask during your free consultation.
Why Choose Prodigy for Septic Installation
Our team maintains Tennessee Septic System Installer Permits, Master Plumbing licenses, comprehensive liability insurance, and bonding meeting state requirements.
We've installed hundreds of septic systems across Davidson, Williamson, and surrounding counties. We understand local soil conditions, county permit processes, and which designs work best for Middle Tennessee properties.
We embrace technology that improves outcomes: GPS mapping of system components, CCTV camera inspection of completed installations, laser levels for precise elevation, and digital documentation.
Unlike contractors who only install systems, we provide complete septic services:
- System design and installation
- Septic inspection services
- Septic repair when needed
- Emergency response 24/7
Maintenance recommendations
Service Areas
We install septic systems throughout Middle Tennessee:
Williamson County
Frequently Asked Questions
How long does septic installation take?
From consultation to completion takes 4-8 weeks, with 3-5 days of actual on-site installation. Timeline includes soil testing (3-5 days), design and permit application (1-2 weeks), permit approval (10-45 days), and installation (3-5 days).
Can I install a septic system myself?
DIY septic installation is illegal in Davidson and Williamson Counties without proper licensing. Tennessee requires valid septic installer permits. Improper installation leads to system failure, health hazards, and property liability. Professional installation protects your investment.
What's the difference between conventional and aerobic systems?
Conventional systems use naturally occurring bacteria without oxygen ($3,500-$8,500), requiring more space but less maintenance. Aerobic systems pump oxygen to accelerate waste breakdown ($10,000-$20,000), requiring 50% less drainfield space but needing electrical power and annual maintenance.
How much does septic installation cost in Nashville?
Costs range from $3,500-$20,000+ depending on system type and site conditions. Conventional systems for typical homes cost $3,500-$8,500. Aerobic systems cost $10,000-$20,000. Alternative systems for challenging sites cost $15,000-$50,000+. We provide detailed estimates during free consultations.
Do I need a permit?
Yes, all Tennessee septic installations require permits. Davidson County issues permits through Metro Nashville Health Department. Williamson County requires permits from the Department of Sewage Disposal Management. We handle all permit applications and coordination.
How do I know what size system I need?
System sizing is determined by bedroom count, not bathrooms. Minimum requirements: 1,000 gallons for 3 bedrooms, 1,250 gallons for 4 bedrooms, 1,500 gallons for 5 bedrooms. Drainfield size depends on soil percolation rates. Our evaluation determines appropriate sizing for your property.
What maintenance does a new system require?
Pump tanks every 2-3 years. Schedule professional inspections every 3-5 years. For aerobic systems, maintain annual service contracts. Monitor what goes down drains—avoid chemicals, grease, and non-biodegradable items. We provide detailed maintenance guidelines with every installation.
Ready to Install Your Septic System?
Whether you're building new, replacing a failed system, or developing property in Middle Tennessee, Prodigy Sewer & Drain delivers expert septic installation you can trust for decades.
