The collection comprises plans of buildings and apparatus of Papplewick Pumping Station.
Of the former, there are floor plans and elevations of the engine and boiler house, stokers' cottage, chimney, sheds and workshops. Details of windows, doors and roofs for these buildings are also present.
Plans of apparatus in the collection include: diagrams of engines and pumping equipment (and their components), the cooling pond, and pipes.
About three quarters of the plans predate 1920 and relate mainly to the original construction and equipment of the pumping station. The later plans deal more with repairs and the erection of temporary buildings. Only about two thirds of the plans are dated but the plan number sequence seems to be roughly chronological.
Most of the plans have previous references written on them, these have been noted in the catalogue.