Outside drains carry waste and rain water from the house to the sewer. They include gullies, manholes and the buried pipes between them. Leaves, silt, grit and roots collect there over time. Because the pipes sit underground, a block often shows up first as pooling water or a smell.
The engineer opens the gullies and manholes along the run. Water levels show where the block sits, since a full chamber lies just before the block. An empty chamber lies beyond it.
A high-pressure hose or drain rods push through the block. The jet also scours the pipe walls while it moves. Loose debris washes on towards the access point.
A camera can follow the cleared pipe. It still shows roots, cracks and shifted joints that cause repeat blocks. The footage helps you decide whether a repair is needed.
The covers go back and the area stays tidy, while the engineer explains what the pipe looks like. Ask what to do next, and ask for the advice in writing.
The cost depends on pipe length, access and the cause of the block. MyJobQuote gives £80 to £150 for an outside drain, and £100 to £200 for a private drain run. HomeServe gives an average of £386 for unblocking a private drain. These are typical UK ranges, not York quotes, and the sources disagree. Ask for a written quote before work starts.
Yorkshire Water says you own the drain from your property until it reaches a shared drain or a public sewer. It looks after public sewers, and shared drains that flow into one if your home was built before 2011. If you are not sure whose pipe it is, ask the water company before you pay for work.
The council says it looks after gullies, manhole covers and ditches. It says it cannot help with drains inside your property boundary, which belong to the owner. For shared sewers outside the boundary, it points people to Yorkshire Water.
Leaves, silt and grit often block the gully or the pipe below it. Heavy rain adds more water than the pipe can carry, since the pipe is already part full. Clear surface debris with gloves, and ask an engineer to jet the run if it keeps happening.
Yes. Roots can enter cracks and open joints while they search for water. Cutting them clears the pipe, but a repair is the only way to stop them returning. A camera survey shows where they got in.
A full manhole means the pipe below cannot carry the flow, since a block holds it back. A block further along is the usual cause. Do not lift the cover, since the chamber may be deep and full. Send a request and mention the manhole.