Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
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<strong>Systems</strong> <strong>Analysis</strong> <strong>of</strong> <strong>Zaragoza</strong> UWS<br />
Guillermo Penagos<br />
Other aspects <strong>of</strong> environmental urban water sustainability are not expressed as goals<br />
for the water system. However <strong>Zaragoza</strong> city signed the Aalborg summit for<br />
sustainable European cities. The goals <strong>of</strong> <strong>Zaragoza</strong> sustainability vision that apply to<br />
the UWS and a list <strong>of</strong> suggested actions to achieve each goal are shown in table 5.<br />
Table 5. Goals <strong>of</strong> the Aalborg summit that apply to the UWS <strong>of</strong> <strong>Zaragoza</strong><br />
Goal<br />
Necessary actions to achieve the goal<br />
1 To reduce water withdrawal <strong>Water</strong> recycling, infrastructureupgrading (on going<br />
action), demand management (demo activity within<br />
the <strong>SWITCH</strong> project)<br />
2 To reduce unaccounted water Infrastructure upgrading, demand management<br />
3 To improve water supply quality Shifting to a different raw water source (on going<br />
action), shifting to a different DWT technology<br />
4 To contribute to improve the<br />
ecological Status <strong>of</strong> the Ebro River<br />
5 To reduce dependence on fossil<br />
fuels<br />
To reduce pollution loads to the River<br />
Shifting to renewable energy sources (depends on<br />
National Government Policies)<br />
6 To reduce the ecological footprint To reduce resource consumption<br />
7 To reduce the production <strong>of</strong> solid<br />
waste<br />
To reduce sludge production<br />
4.4.2 Focus problem and drivers affecting <strong>Zaragoza</strong> sustainability vision<br />
The tree problem methodology is used here to define the goal <strong>of</strong> environmental<br />
sustainability as the focus problem <strong>of</strong> <strong>Zaragoza</strong> UWS. Several drivers that might<br />
affect the environmental performance <strong>of</strong> such system are shown in figure 18.<br />
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