Drainage problems explained

A blocked outdoor drain may send wastewater back towards the house. Learn what the warning signs mean and who should deal with it.

A blocked toilet can overflow quickly. What to do straight away, what not to flush and when to call a drain specialist.

Repeated drain blockages deserve investigation. Find out why clearance alone may not solve the underlying problem.

Why flushing a toilet may send wastewater into a shower tray and what to do before it overflows.

Practical clues to distinguish a blocked sink waste from a wider drainage problem.

If wastewater spills out beside your home, here is what the overflow may reveal.

What an overflowing inspection chamber means and how to decide who to contact.

Sewage smells indoors or around the garden can have several causes besides a blocked drain.

Gurgling can be a clue to restricted flow or a ventilation problem. Here is what to look for.

Why drains may overflow during storms and how to distinguish blocked pipes from overwhelmed surface water drainage.

How roots get into drains and why the visible evidence matters before expensive repair work.

A collapsed drain is serious, but recurring blockages do not prove collapse. Understand the clues and checks.

When a drain camera survey is worthwhile, what a report should show and what to question.

Drain jetting can be effective, but it is not the right solution for every blocked sink or damaged pipe.

Understand when no-dig relining may help, and when excavation may still be required.

Why prices vary and the questions to ask before paying for emergency drain clearance.

Private drains, shared drains and public sewers: a practical guide to checking responsibility.

Why damaged drainage pipes may provide a route for rats and why pest control alone may not fix the access point.

How leaking underground pipework can affect soil and why a crack in the wall is not proof of a drain leak.

How to tell whether a blocked bath waste is local or connected with a wider drain problem.