This innovation provides a low-cost, low-power water purification system that can produce potable water from untreated surface water, wastewater, and seawater by utilizing solar thermal energy. The simplified system is comprised of an inlet water chamber, a hydrophobic membrane with the permeable side coated with carbon black particles, gaskets, a distillate chamber, a condensate channel and a clean water collection tank. It removes pathogenic organisms, volatile organic compounds, and other impurities to produce potable water at the point-of-use. The system requires no electricity and has a higher production rate of distilled water per unit area of solar heat absorber than existing solar stills.