A study was conducted to determine the factors in the urban environment which contribute to the pollution of urban storm water runoff and to determine methods to limit this source of water pollution. It was found that street refuse - litter - could be a significant factor when the nature of the shock discharge of the pollution is considered. An evaluation was made of the efficiency of street cleaning methods and limitations of commonly used equipment explored. Catch basins in conjunction with street inlets to the storm water disposal system were also determined to be a potential major source of pollution. Other potential sources of pollution considered included air pollution, roof discharges, and chemicals used in the urban environment. (Author Modified Abstract)