Recently, several models for domestic water forecasting have been developed and published in literature. The model from Archibald is a simple component model for calculating the domestic water demand per household. One of the components in the model is “bathing and showering”. The problem with this type of model is that every component has several factors, which should be determined and in most applications there is not enough information to every component and if one component cannot be modeled the whole model would be insufficient. Eqns (1) and (2) describe some of the mostDeterminants of domestic water demand.pdf used models for domestic water demand forecasting.