The growth of urban areas and constant need for potable water services, have highlighted the importance of accurate water consumption estimates for effective municipal water services infrastructure planning and design. A clear understanding of the drivers of residential water demand is essential in managing water resources appropriate as potable water. In this paper, a total of (1682) daily household water demand computations were carried out in order to calculate the actual indoor water consumption factor in the city of Mosul. The impacts of specific days of the week family size, water supply continuity and, seasonal variations (winter and summer) on water consumption were also considered. Results revealed that the daily average water consumption factors were (126  65 Lcpd) in a winter season, (235  64 Lcpd) in a summer season and the overall water consumption factor for the area was (180  84 Lcpd). Water consumption was also found to be significantly correlated with explanatory variables. Seasonal variation plays the biggest role in controlling the water consumption factor followed by water supply continuity, then family size (negative effect) and in the last order specific days (weekends). General models to explain the effect of all of these parameters on the per capita water consumption were also derived in this paper.