Statistical Modelling Of Household Water Usage In Dodoma Municipality

ABSTRACT

Water is one of the fundamental element for life. For that reason, water usage

forecasting is required for a proper planning and management. Because there is no

single methodology that is used to forecast water demand (quantity of water to be

used) across the world, this study intended to develop a statistical model for

household water usage in Dodoma Municipality. Longitudinal and cross-sectional

research design data from DUWASA, NBS and 395 households connected with

piped water were used

Model development involved two variables, population and quantity of water used.

The study has found over an existing relationship between the population and the

quantity of water used is non-linear. Quadratic model is the best model among nonlinear

models which fit well the data.

In addition, findings indicate that, water price, income and household size are factors

which significantly influence water usage in Dodoma Municipality. DUWASA is

performing well by supplying water in line with the usage. Customers are satisfied

with DUWASA customer care but dissatisfied with provision of information, water

connection and supply likewise complains response. The overall DUWASA

customer’s satisfaction stands at 54.4% which imply that, customers are moderately

satisfied with DUWASA services.

The study recommends that, water authorities may consider population, household

size and head of households’ income, as variables in planning and management of

water resources. To raise customer satisfaction, DUWASA needs to improve its

services especially on factors which customers were observed unsatisfied.