A Practical Guide for Homes, Properties, and Professionals
Sewer inspections aren’t just for emergencies. Knowing when and how often to inspect a sewer line can prevent major failures, reduce repair costs, and extend the life of your plumbing system.
The right inspection frequency depends on property age, surroundings, usage, and risk level. Below is a clear breakdown you can actually follow.
Table of Contents
Recommended Sewer Inspection Frequency
Most sewer lines should be inspected every 1-5 years, depending on property type and conditions.
Residential Homes
- Standard homes (10-30 years old): Inspect every 3-5 years
- Older homes (30+ years): Inspect every 2-3 years
- Homes near large trees: Inspect every 1-2 years due to higher risk of root intrusion
- New home purchase: Inspect before closing, even if the home looks problem-free
Older pipes, clay lines, cast iron, and Orangeburg pipes are especially vulnerable to cracks, offsets, and root damage.
Property Managers & Multi-Unit Buildings
- Recommended frequency: Annually, or before major tenant turnover
- Why it matters: Prevents emergency backups, protects tenants, and helps plan maintenance budgets
Routine inspections are far cheaper than dealing with flooded units or repeated service calls.
Municipal & Commercial Systems
- Recommended frequency: On a scheduled inspection cycle (annual or multi-year programs)
- Focus areas: Condition assessment, documentation, compliance, and long-term planning
For these systems, inspection quality and documentation matter as much as frequency.
When Sewer Inspections Matter Most
Even if you’re not on a fixed schedule, these are critical times to inspect a sewer line.
Before Buying a Home
Many sewer problems are underground and invisible during standard home inspections. A camera inspection can reveal cracks, root intrusion, or collapsed sections before you inherit the cost.
After Noticing Red Flags
Recurring issues are rarely coincidence. If you experience slow drains, gurgling toilets, or sewage odours, you should inspect immediately regardless of when your last check was.
Aging or Repaired Pipes
If pipes are over 25-30 years old or have had past repairs, inspections help track deterioration before failure.
Warning Signs You Should Camera a Sewer Line Immediately
If you notice any of the following, a sewer camera inspection is strongly recommended:
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Multiple clogged drains in different areas of the home
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Lush or unusually green patches in the yard above the sewer line
- Persistent sewer gas odours indoors or outdoors
- Indented pavement or sinking soil near the sewer path
- Repeated backups despite clearing drains
These signs often indicate cracks, root intrusion, offsets, or partial collapses.
Preventive Sewer Inspection Tips
- Watch What You Flush
- Manage Grease Properly
- Install Root Barriers When Needed
- Schedule Routine Camera Inspections
- Use Drain Screens
- Avoid Chemical Drain Cleaners
- Address Slow Drains Early
- Keep Inspection Footage on File
- Protect Pipes During Renovations
Why This Matters
A professional sewer camera inspection typically costs $150-$450, while full sewer line replacement can cost $5,000 to $20,000+.
Preventive inspections also make trenchless repair options possible, which are faster, less invasive, and significantly more affordable.
Frequently Asked Questions
1. How often should sewer lines be inspected?
Most sewer lines should be inspected every 1-5 years, depending on age, usage, and environmental factors like trees.
2. When should I camera a sewer line?
Camera a sewer line before buying a home, after recurring clogs, when odors appear, or if pipes are aging.
3. Do newer homes need sewer inspections?
Yes. Even new homes can have construction debris, poor slope, or installation issues that only cameras reveal.
4. Are preventive sewer inspections worth it?
Yes. Preventive inspections cost a fraction of emergency repairs and often prevent full pipe replacement.
5. How much does a sewer camera inspection cost?
Professional inspections typically range from $150 to $450, depending on location and pipe length.
6. Can inspections help avoid digging up my yard?
Yes. Early detection allows for trenchless repairs, which are far less invasive and more affordable.
Related Reading
For more tips and product insights, check out our latest blogs:
How Much Do Plumbers Charge to Inspect a Sewer Line?
Should You Rent or Buy a Sewer Camera?
For questions about Forbest inspection cameras, contact a Representative by calling 1-877-369-1199 or message us by clicking here.