Know What You're Getting Below Ground
A septic system can cost $15,000 to $30,000 to replace. Most home inspections include only a basic visual check—if that. A proper septic inspection goes deeper, testing how the system actually works under real conditions before you commit to the purchase.
Two Levels of Septic Inspection
I offer two types of septic inspections, depending on what you need to know
Visual & Load Testing
Non-InvasiveA thorough inspection without digging up the tank. I inspect all visible components and run water through the system to test its performance under real conditions.
What's checked:
- Tank lid condition and accessibility
- Visible signs of sewage surfacing or odors
- Drainfield area for wet spots or saturation
- Distribution box condition (if accessible)
- System response to water flow (200-400 gallons)
- Drainage speed and backup indicators
- Drainfield absorption rate under load
Best for: Most home purchases, especially systems over 10 years old or with unknown maintenance records.
Full Functional Test
Most ComprehensiveThe tank is pumped out and inspected inside, revealing the true condition of the tank and its components. After inspection, the system is subjected to real-world flow testing.
Everything from Visual & Load Testing, plus:
- Interior tank condition (cracks, deterioration)
- Baffles and tees for damage or failure
- Inlet and outlet pipes for proper function
- Tank walls, floor, and ceiling integrity
- Sludge and scum layer measurements
- Pump and alarm function (if applicable)
- Full load test after pumping
Best for: Older systems (15+ years), history of issues, financing requirements, or when you want absolute certainty.
What Gets Missed Without Testing
A visual-only inspection can miss critical issues. I've seen clean-looking systems where water started backing up within 20 minutes of load testing—the drainfield was saturated and failing. Replacement cost: $22,000.
Saturated Drainfield
Soil compaction or saturation that prevents proper drainage, leading to sewage surfacing or backing up into the home.
Slow Drainage
Gradual drainage issues that only appear under real-world water usage, indicating a system nearing failure.
Cracked Tank Walls
Hidden cracks or deterioration in the tank structure that allow groundwater in or sewage to leak out.
Damaged Baffles
Broken or missing baffles that allow solids to escape into the drainfield, causing premature failure.
Failed Distribution Box
Uneven distribution of effluent to the drainfield, causing some areas to become overloaded while others remain dry.
Undersized System
Systems that were improperly designed or sized for the home's actual usage, leading to chronic overload issues.
When to Schedule a Septic Inspection
Get a septic inspection if:
- The system is over 10 years old
- Maintenance records are incomplete or missing
- The seller mentions past drainage issues
- You're buying a rural property where replacement costs are high
- Your lender requires a septic certification
- You want peace of mind before closing
Scheduling 7-10 days before closing allows time to address any issues or renegotiate if needed.
Inspection Packages & Pricing
Choose the level of inspection that fits your needs
Visual & Load Test
Non-invasive inspection with flow testing
- 2-3 hour inspection
- No digging or pumping required
- Visual inspection of all components
- 200-400 gallon load test
- Drainfield performance assessment
- Detailed report with photos
Add-On: +$200 with base inspection
Total: $725
Full Functional
You arrange pumping separately
- 3-4 hour inspection
- Everything in Visual & Load Test
- Tank inspected inside after pumping
- Baffle and structural assessment
- Sludge/scum layer measurements
- Comprehensive report
You'll need to arrange septic pumping separately before the inspection.
Add-On: +$650 with base inspection
Total: $1,175
Full Functional + Pumping
We coordinate everything for you
- 3-4 hour inspection
- Everything in Visual & Load Test
- Tank pumped and inspected inside
- Baffle and structural assessment
- Sludge/scum layer measurements
- Comprehensive report
- Pumping coordination included
Add-On: +$750 with base inspection
Total: $1,275
What to Expect
All inspections include a detailed report with findings, photos, and recommendations. For full functional tests, I coordinate with licensed septic pumpers to handle the tank pumping.
Visual & Load Test
2-3 hours
No digging required
Detailed report with photos
Full Functional
3-4 hours + pumping
Tank pumped and inspected inside
Comprehensive report
Yes. Pumping a tank only removes the contents—it doesn't reveal the condition of the tank walls, baffles, drainfield, or how the system performs under load. A recently pumped tank can still have significant issues that only show up during a proper inspection.
In most all cases, you receive the report the same day. The report includes detailed findings, photos of all inspected components, and clear recommendations for any issues discovered.
Every situation is different. I'll explain what was found and provide repair estimates when possible. You and your real estate agent can then decide how to proceed—whether to negotiate repairs, credits, or reconsider the purchase. Having this information before closing protects you from inheriting costly problems.
For most home purchases, the Visual & Load Test provides excellent insight into system function. I recommend the Full Functional Test for systems over 15 years old, properties with a history of septic issues, when financing requires certification, or when you want complete certainty about the tank's interior condition.