When should sewers be inspected before being placed in service?

When should sewers be inspected before being placed in service?

• A. During construction only
• B. After backfill but before landscaping
• C. Before trenching
• D. After landscaping

Answer: (B)

Inspections before putting a sewer in service should happen after the trench has been backfilled but before any landscaping or surface finishes are added. This timing lets you verify that the pipe is properly installed in the trench—correct depth and alignment, solid bedding, and properly seated joints—without the backfill or soil covering hiding problems. It also allows access for testing and for making sure cleanouts and manholes are accessible and the system shows no leaks or defects before it’s buried under landscaping. If you waited until after landscaping, or only inspect during construction, issues from backfilling or final finishing could be hidden or inaccessible, making repairs costly or impractical. Inspecting before trenching wouldn’t confirm the actual installed condition, and inspecting after landscaping would defeat the purpose of verifying the installation before service.

Inspections before putting a sewer in service should happen after the trench has been backfilled but before any landscaping or surface finishes are added. This timing lets you verify that the pipe is properly installed in the trench—correct depth and alignment, solid bedding, and properly seated joints—without the backfill or soil covering hiding problems. It also allows access for testing and for making sure cleanouts and manholes are accessible and the system shows no leaks or defects before it’s buried under landscaping.

If you waited until after landscaping, or only inspect during construction, issues from backfilling or final finishing could be hidden or inaccessible, making repairs costly or impractical. Inspecting before trenching wouldn’t confirm the actual installed condition, and inspecting after landscaping would defeat the purpose of verifying the installation before service.