The Environmental Management Systems (EMS) Guidebook for Improving Energy and Environmental Performance in Local Government was prepared in order to provide a tool that would walk municipalities through the EMS implementation process with a minimum of outside support. The multi-step process, tools and template documents contained herein were tested and refined through a Pilot Program that involved seven Pennsylvania municipalities. It is expected that, by using the tools and templates presented in this guidebook, a municipality can implement a complete EMS without outside assistance. It is, however, recommended that any municipality or organization interested in environmental management systems seek out as much relevant information on the subject as possible. The additional sources of EMS information presented in Section 6 of this Guidebook are included for this reason, and the reader is encouraged to explore the sources provided as a starting point for their own research.