Do some research using the library and/or the Internet and evaluate the relative effectiveness of three different home water purification devices. Try to determine the costs of these systems,...

Do some research using the library and/or the Internet and evaluate the relative effectiveness of three different home water purification devices. Try to determine the costs of these systems, including purchase, installation, and maintenance costs, and record these costs for each system. Determine the type or types of water pollutants that each device is supposed to remove and the effectiveness of each such device. You might also consider looking up reviews of each product and finding some users of these products to interview. Write a report summarizing your findings.