Can anyone help me? My neighbour is working on the drainage field for our shared houses. She has arranged for a single pipe to replace the old pipe which took the discharge from our septic tank to the side of the field where it flows down the field in a ditch. Building Control has said it breaches the general binding rules (whatever they are!) but they will sign it off anyway because it's not a worse system than was in previously. Is this OK? Is it alright to sign something off that is not complying with all the regulations? I want it to be done properly but it's not my field.