  Water distribution network (WDN) is a highly complex urban infrastructure
that is intended to supply water from source node to consumer nodes. As far as
the components of an infrastructure are concerned, the interconnecting pipes
that transport water from source node to the demand nodes account for the major
fraction of the capital cost. Therefore, when designing WDN, the primary
concern is on finding the optimal combination of pipe diameters that satisfies
the hydraulic-head requirements at minimum cost. More recent methodologies
employ direct heuristic and stochastic heuristic algorithms for the design of
WDN. In this study, the use of Honey-Bee Mating Optimization (HBMO) stochastic
algorithm for the design of WDN in the Gurudeniya Service Zone, Gurudeniya, Sri
Lanka, has been examined. In-built hydraulic constraints have enabled the
algorithm to deliver results without needing a separate hydraulic simulation
software in this design. The solutions given by HBMO algorithm and the solution
implemented by National Water Supply and Drainage Board, Sri Lanka have been
compared. From the implementation of the HBMO algorithm, results show that the
HBMO algorithm is successful in addressing the WDN design problem with given
hydraulic constraints for Gurudeniya Service Zone.
