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The infrastructure of modern cities lags behind the rate of development that is
needed for cities to sustain their populations in the future. There is an evident need to
address the issue of sustainable management of urban water systems. This study ad-
dresses this by attempting to identify the principle problems urban water manage-
ment is facing today and assessing the impact of pollution on groundwater resources.
The cities of Doncaster (United Kingdom), Ljubljana (Slovenia), Mt Gambier
(Australia) and Rastatt (Germany) provided case studies for the project. They were
selected due to their different approaches to the management of the existing urban
water systems. A detailed description of the economic and demographic profile of
four case study cities was provided. Data regarding the different hydrogeological and
hydrological settings provides a backdrop for comparisons to be made. This is par-
ticularly due to the fact that they display significantly different approaches to the
management of their respective existing urban water systems. The studies provide an
overview of each city's water infrastructure and data about the groundwater quality.
These studies make up the AISUWRS project which has developed a number
of models which are capable of predicting the effects of urban infrastructure on
ground water contamination. Currently there are six models in total, including a pipe-
line leakage model and an unsaturated flow model, which predicts water transport to
the aquifer. The unsaturated transport model predicts the transport of contaminants to
the aquifer and the decision support system (DSS) model compares the costs of in-
frastructure rehabilitation with the costs of aquifer contamination.
PUTTING CLEANER VEHICLES ON THE STREET
A successful campaign implemented in the framework of the put more than 160
alternatively fuelled vehicles on the roads
Emissions from vehicles not only degrade local air quality, they also
contribute to global climate change. Engineers are constantly striving to re-
duce these emissions and to make transport more sustainable.
Impressive emission reductions have been achieved with alternative fu-
els such as compressed natural gas (CNG), yet the market has been slow to
adopt this technology.The Growth programme charged the Vivaldi consor-
tium with boosting CNG usage across all sectors.
ECOLO, a Vivaldi partner based in Bremen, has implemented an exten-
sive campaign in its hometown. The first goal was to educate the public about
the environmental and other benefits of CNG versus conventional fuels (e.g.
gasoline). ECOLO targeted a wide range of stakeholders, ranging from car
dealers to taxi companies to service stations and even driving schools.
In addition to raising public awareness, it was also necessary to provide
financial incentives since CNG-powered vehicles are still slightly more ex-
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