Sewage in the basement. Here is what to do first.

Mechanical clearing uses a cable and suitable cutter to reopen a restriction. It can be the first step when wastewater is trapped, but restoring flow is not proof that the pipe is sound. Ask what was removed and whether the cleared line can be inspected to the public connection. A camera may need a reasonably clear pipe to provide a useful view.

Hydro jetting uses controlled high-pressure water to remove deposits and some root growth. A contractor should assess condition and access before choosing pressure and tooling; it is not a way to reconstruct broken pipe. Camera inspection then records cracks, offsets, material changes and standing water. Ask for the recording, measured distances and an explanation of any section that remained inaccessible.

A localized structural defect may justify a spot repair, while a suitable continuous host pipe may support lining. Collapse or a significant grade problem may require excavation or replacement. These are different scopes from sewage extraction, disinfection and drying inside the house. Ask for separate written descriptions so clearing a drain is not mistaken for complete basement cleanup.

Many older Detroit-area properties have jointed clay or older metal laterals, sometimes mixed with later plastic repairs. Roots can exploit open joints; seasonal growth can make restrictions recur. A spring root problem does not prove every storm backup has the same cause. Combined-system surcharge can also force water toward a house with a structurally sound private lateral.

Compare a dry-weather backup after a laundry cycle with a rain-driven event affecting several homes. Report suspected main issues to the municipality and keep the private camera findings separate. Once the pipe's condition is known, a backwater-protection assessment may address reverse flow. No cleaning, liner or valve should be represented as a guarantee against every source of basement flooding.