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This paper formulates models of residential water demand and estimates the relevant parameters from cross‐sectional data. For the first time, it has been possible to differentiate not only between domestic (inside) and sprinkling uses but also among metered, flat‐rate, septic tank, and apartment areas. The major findings are: (1) domestic demands are relatively inelastic with respect to price; (2) sprinkling demands are elastic with respect to price, but less so in the west than in the east; (3) maximum day sprinkling demands, so important to system design, are inelastic in the west but relatively elastic in the east. The findings indicate that the elasticity of total demand, which this and other studies have found to be about −0.4, is a weighted average of the domestic and sprinkling elasticities. Longer term adjustments to price are empirically investigated, and the role of demand functions in pricing and system design is discussed.
Howe et al. (Wed,) studied this question.