This series consists of bound original and photocopied material dealing with the feasibility of constructing water supply systems throughout the state. Included in the 8 1/2"X 11" volumes are construction plans, blueprints, specifications, reports, studies and correspondence generated by the different engineering firms which undertook the various studies. Most of the feasibility reports are original recommendations for systems which have been implemented and are essential for agency personnel in making inspection and recommendations, or to remedy emergency situations such as pollution or breaks in the system. This series cross-references to 88-6-27, Water Supply Systems Specification File-Water Treatment Specification File, which contains bound copies of documents covering the construction or modification of or improvements to the various water supply systems that have been implemented.