OPC facilitated OHA access to the NPDS web service, which OHA could use free of charge. Access to the web service consisted of requesting approval from the local poison center and adhering to an NPDS web service data use agreement between OPC and OHA. We use FileMaker, a commercial off the shelf database application, to automatically query the NPDS web service on a daily basis. The queried data are then automatically sent from a local database temporarily storing the information to the ESSENCE servers. OHA already uses FileMaker for managing notifiable conditions data (i.e., communicable disease reporting); so, there were no new licensing costs associated with this method.