Portable solar apparatus for purifying water

A system for purifying water, the system comprising:

• a reservoir;
• a production unit production unit comprising:
• a base with a top surface;
• a fluid intake;
• a heating basin fluidly connected to the fluid intake by a connector such that a layer of water with a first depth is provided to the heating basin from the fluid intake, the first depth being less than about 30 mm;
• a transparent dome mounted to the top surface of the base that defines an interior perimeter, the transparent dome having an interior surface;
• a trough in the base, the trough being contiguous with the interior surface of the transparent dome;
• a fluid output fluidly connected to the trough and extending away from the base;
• a plurality of lenses configured to focus sunlight onto a corresponding plurality of focal points located on the layer of water;
• a pre-heating system fluidly connecting the reservoir to the production unit, the pre-heating system comprising a heating element selected from the group consisting of a black tube, an evacuated tube, and combinations thereof.