Preserve the useful detail
Stop after one failed flush and note bowl level, tank fill, nearby drains, and whether another fixture moves the water.
The decision on display
Do not transfer the hazard
Close a sound stop if filling is uncontrolled. Do not plunge when wastewater returns through more than one opening.
Make the proposed work comparable
Ask whether scope includes bowl clearing, removal, new seal, branch access, camera work, reset, exterior check, and repeated flush testing.
CURRENT PRIMARY SOURCE