WSU Extension > Mason County > Loading view. There were no results found. There were no results found. Events Mason County PUD #3 Mason County PUD #3 2621 E Johns Prairie Rd Shelton, United States Get Directions 360-426-8255 https://www.pud3.org/ Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file