Bring water and sugar to a boil in a small pot. Cut the lemon into thin slices and place them in the sugar syrup.  Let the mixture boil for 3 minutes.  Remove the pot from the heat, and let it steep for 10 minutes.  Remove the lemon slices from the syrup, and let them cool slightly on a piece of parchment paper.  Then place the lime slices on a tray in the dehydrator.  Dry/dehydrate the lemon slices for 8 hours.