The purpose of the project was to identify the significance of variables affecting residential water consumption in the case of private urbanization dwellings in Puerto Rico. Separate sections deal with a survey of variables affecting residential water consumption and response variables for residential water consumption, design of a statistical experiment; experimentation and data gathering; analysis of data; and conclusions and recommendations. It is concluded that the number of bathrooms has the largest effect on per capita water consumption in the case of private urbanization homes in Puerto Rico. This study does not indicate that property value is a significant variable as believed by many. Recommended for investigation is an approach to account for two-factor interactions, i.e., interaction effect between variables, such as number of bedrooms and number of automobiles. (WRSIC abstract)