A Slurpee may be a tasty treat from 7-Eleven for some people, but for others SLURPY could mean the difference between safe and toxic water. The current cholera epidemic in Haiti gives high-achieving students an opportunity to engage in problem-solving skills to tackle a current health crisis. Participants learn how students can design and build an extremely effective, yet simple and inexpensive, water purification system using plastic trash containers, rocks, and gravity. Sensors and chemical tests are utilized to verify the effectiveness of water filtration systems by testing local groundwater samples before and after filtration