The Clean Water Project by Oxford University MSc student Stephen Goodwin Honan is a water-filtration system that relies on the property of the naturally occurring plants to extract arsenic substance from water. Arsenic is used in the semi-conductor manufacturing industry. The farmers in Bangladesh were among the first to try this filtration system and 80% of them understood well how the system worked as well as how tio take care of the plants. The production cost of the project is only US$10 but it can turn out US$85 worth of arsenic per year. This proves that the eco-friendly way based on scientific thinking and social conscience not only upgrades quality of life, but also household income and even national economy. Presently, 70 million people of the total 156 million population of Bangladeah suffer from arsenic poisoning which is caused by drinking contaminated water.