After replacing a sink, the garbage disposal outlet is lower than the main drainage pipe, making it impossible to achieve proper gravity drainage.

No guidance on how to connect a garbage disposal when the outlet sits below the sewer line, which is a common code-violating scenario.

Severity

3Medium

Willingness to Pay

implied

Added

Jun 14, 2026

Workarounds Described

Considering whether to dispose of the garbage disposal entirely

Implied Software Gaps

Plumbing installation guidance app that evaluates gravity drainage feasibility for garbage disposals

App Concept

DrainLevel Pro

An augmented reality app that scans your under-sink plumbing layout and calculates whether a garbage disposal can be installed with proper slope. It provides step-by-step retrofitting instructions, such as raising the disposal, adding a drain pump, or rerouting pipes, tailored to your specific measurements.

Key Features

AR measurement of drain heights and distances
Code compliance check (slope, venting)
Custom diagram with installation options
Material calculator for required parts

Target Users: DIY homeowners and plumbers replacing sinks or installing garbage disposals in residential kitchens

Revenue Model: $4.99 per scan or $9.99/month subscription for unlimited scans and detailed diagrams

Existing Solutions Mentioned

P-trapgarbage disposal

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