According to Rogers (2003, p. 11), Diffusion is the process by which an innovation is communicated through certain channels over a period of time among members of a social system. The University of Georgia Marine Extension Service embarked on a Clean Water Act 319 (h) grant funded project that involved the inventory and GIS mapping of all relevant septic systems (OSDS) and well heads in proximity of state waters of coastal Georgia. Coastal Health District Environmental Health Managers and Inspectors were trained on a GIS mapping and database process innovation, the OSDS project procedure. Through results of an administered survey and observed behavior, the Diffusion of Innovation was found to be on a late majority level. It is my hope that this study will add to the body of research about Diffusion of Innovation with GIS technology and local governments by identifying attributes of the knowledge attitude and behavior of adoption.