"Mike" wrote in message
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"Hugo Nebula" abuse@localhost wrote in message
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You say it's a 225mm (9") pipe from _your_ house? Does this just
serve your house, because 225mm seems very large.

Good point. Q to the OP - is this also a flood culvert ? If it is you
may
find the EA own it and will repair it for you.

Yes, definitely 9 inch internal diameter. It only serves our house (sewage
and rainwater).

Someone suggested that maybe possible to place a smaller diameter pipe
through the middle. Problem is, the run is well over 100m. I guess that it
would not be wise to go from 9 inch to 4 inch as it may cause things to back
up a bit(?)

Colin