Where available, centralized treatment is the recommended method for producing potable water. Many homes, however, can not connect to a centralized water treatment system leaving them with no other alternative but to treat their own water. POU/POE systems are effective for removing organic contaminants from drinking water if operated and maintained properly. More homeowners with private drinking water sources are aware of the potential of contamination of these sources and are willing to have them tested. This has led to the identification of many organic compounds in these private drinking water sources. As testing continues, the potential exists for identifying more private drinking water sources that have been contaminated by agricultural use, industrial solvents, leaking gasoline tanks, and hazardous waste sites.