I seem to have a damaged clay sewage pipe as water is slowly leaking into my septic tank via the pipes from the surrounding land. The length from my manhole to the tank is about 15 metres, is there such a thing on the market as a flexible hose or pipe which I could pull through the network to avoid having to dig the whole pipework up again.?

Ted. Whitehaven, September 2009

Presumably this is the outgoing pipe from your house to the tank? In which case the pipe will be in salt glaze rather than clay. I don't think you'll find what you need as the diameter of the pipe needs to be 100mm and anything smaller would restrict the solids. Time to excavate and relay the pipe in plastic, unfortunately.

John, September 2009