UNLABELLED Avian and possum fecal droppings may negatively impact roof-harvested rainwater (RHRW) water quality due to the presence of zoonotic pathogens. This study was aimed at evaluating the performance characteristics of a possum feces-associated (PSM) marker by screening 210 fecal and wastewater samples from possums (n = 20) and a range of nonpossum hosts (n = 190) in Southeast Queensland,...

This paper investigates the optimal design of water distribution networks without storage capacity using mathematical optimization. Both micro-genetic algorithm and hydraulic simulation network are used to find diameters pipes network. The single-objective function optimization problem is total cost capital costs piping pump, operating under fulfillment minimum nodal pressure requirements. An m...

The quality of -water contained in the different tanks varie8 as the tank is more or less exposed to deteriorating influences ; some of them have a reputation, based for the most part on forgotten traditions, for yielding unusually good water, and the conservatism of the place is willing to uphold such reputation against adverse arguments or appearances ; for exammle?? it was stoutly denied a f...

The seismic behaviour of underground structures is generally satisfactory compared to the above-ground ones. However, despite of the buried structure confinement, in recent strong seismic events some underground structure as tunnels, pipelines and tanks suffered high damage; for this reason, a strong effort is focused to evaluate the seismic vulnerability of these structure and to give codes in...

An investigation of the chemical environment and growth of Legionella pneumophila in plumbing systems was conducted to gain a better understanding of its ecology in this habitat. Water samples were collected from hospital and institutional hot-water tanks known to have supported L. pneumophila and were analyzed for 23 chemical parameters. The chemical environment of these tanks was found to var...

Ornamental fish ponds requires continuous control of water quality such as salt content (salinity), hardness (Ca, Mg), and ionic contents particularly nitrate and ammonium. Conductivity is considered as a parameter correlates with these parameters and sensitive to environmental conditions such as temperature. Therefore, a conductivity detector can be employed for control of water quality in aqu...