Read the pattern
Record water level, whether it rises without flushing, response to one controlled flush, nearby tub or sink movement, sounds below, object history, prior plunging, and base stability.
Decision terrace 26
Move from evidence to a bounded authorization
Hold the safety line
Stop flushing when the level rises or another opening reacts. Keep children and pets away, avoid chemical mixing, and do not use cracked porcelain or a toilet loose at the floor.
Place the Seattle boundary
A fixture blockage differs from a private building drain or side-sewer backup. SPU's backup path becomes relevant when the evidence reaches beyond the fixture and property responsibility is unclear.
Write the visit
State whether the work includes bowl access, fixture removal, branch cable, camera, flange inspection, new seal, floor protection, sanitation, disposal, and escalation for a deeper line.
Keep the closing evidence
Complete several controlled flushes, add flow at a nearby fixture, inspect the base and supply, and record any object, recurring branch condition, or floor concern still unresolved.
Current public source