| Water Purification Links | |
| Photographs | How To Build It |
| ~~~Providing clean water and sanitation to the world's expanding population is critical. As populations have increased and rates of urbanization have accelerated without sufficient infrastructure capacity, the provision of clean water and the environmentally sound disposal of wastewater in urban areas has become a serious challenge. Solar water purification systems can provide low-income populations with a means to purify water used for drinking and cooking.~~~ | |