Start with the pattern
One slow basin usually points to a local trap or branch-line restriction. Several fixtures backing up together can indicate a downstream drain problem. Repeated blockages after previous clearing justify investigation rather than another temporary clearing attempt.
Clearing methods
Depending on the system and obstruction, plumbers may use hand tools, rods, mechanical equipment or high-pressure water jetting. The correct method depends on pipe material, access, the likely obstruction and the condition of the drain. Aggressive equipment can damage weak or already-failed pipework, so the condition of the system matters.
When a camera inspection adds value
Camera inspection is useful where blockages recur, where roots or structural defects are suspected, or where the route and condition of buried drainage are uncertain. It can help separate a once-off obstruction from a broken, displaced or poorly graded pipe.
Related information
After-Hours Plumbing Emergency Checklist
The immediate objective is usually to protect people, limit water release and preserve useful information for the repair team.
Bathroom Renovation Plumbing
Bathroom renovation plumbing must be coordinated with demolition, waterproofing, tiling, cabinetry and sanitaryware. Changes should be set out before walls and floors are closed.
Blocked Toilet: First Steps Before Calling a Plumber
Repeated flushing can turn a simple blockage into an overflow. The first objective is to stop adding water and establish whether the problem is limited to one toilet.
Drain Smells
Drain odours can come from a dry trap, fouling, defective seals, poor venting or a drainage problem further downstream.