Hiss...spurt...sputter...

goes the irrigation system as it reawakens at the beginning of the warm season at my retreat in the desert.  The low water use system provides the elixir of life to a few  cottonwood and acacia trees via drip emitters controlled by an electronic timer.  There are always a few repairs necessary and usually a reprogramming of the controller that need to be addressed on start up, and those are the big chores of today.