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Figure 3 shows the DMA layout, the location of measurement points and the elevation of nodes in the analysed DMA. The DMA has a total mains length of 24 km, with 16 boundary valves and no pressure reducing valves. The area contains 2,640 domestic properties and 500 commercial properties of which 48 have a demand greater than 400 m3/year. The zone is predominantly urban domestic/industrial. A number of customer contacts and intervention of the utility crews are available for the period analysed, as reported in Table 1. These data will be useful for identifying/confirming anomalies during the testing phase.
Figure 3

Layout and elevations of the analysed DMA.

Figure 3

Layout and elevations of the analysed DMA.

Table 1

Customer contacts and utility crew interventions

DateType of interventionDateType of intervention
11/09/2008 Customer claim 27/10/2008 Customer claim 
12/09/2008 Customer claim 28/10/2008 Customer claim 
14/09/2008 Customer claim 28/10/2008 Utility crew 
16/09/2008 Utility crew 29/10/2008 Utility crew 
17/09/2008 Utility crew 30/10/2008 Customer claim 
26/09/2008 Customer claim 30/10/2008 Utility crew 
01/10/2008 Customer claim 30/10/2008 Utility crew 
06/10/2008 Utility crew 30/10/2008 Utility crew 
08/10/2008 Customer claim 31/10/2008 Utility crew 
09/10/2008 Utility crew 04/11/2008 Utility crew 
09/10/2008 Utility crew 04/11/2008 Utility crew 
13/10/2008 Utility crew 07/11/2008 Utility crew 
16/10/2008 Customer claim 10/11/2008 Utility crew 
16/10/2008 Utility crew 10/11/2008 Utility crew 
21/10/2008 Customer claim 13/11/2008 Utility crew 
23/10/2008 Customer claim 13/11/2008 Utility crew 
24/10/2008 Customer claim   
DateType of interventionDateType of intervention
11/09/2008 Customer claim 27/10/2008 Customer claim 
12/09/2008 Customer claim 28/10/2008 Customer claim 
14/09/2008 Customer claim 28/10/2008 Utility crew 
16/09/2008 Utility crew 29/10/2008 Utility crew 
17/09/2008 Utility crew 30/10/2008 Customer claim 
26/09/2008 Customer claim 30/10/2008 Utility crew 
01/10/2008 Customer claim 30/10/2008 Utility crew 
06/10/2008 Utility crew 30/10/2008 Utility crew 
08/10/2008 Customer claim 31/10/2008 Utility crew 
09/10/2008 Utility crew 04/11/2008 Utility crew 
09/10/2008 Utility crew 04/11/2008 Utility crew 
13/10/2008 Utility crew 07/11/2008 Utility crew 
16/10/2008 Customer claim 10/11/2008 Utility crew 
16/10/2008 Utility crew 10/11/2008 Utility crew 
21/10/2008 Customer claim 13/11/2008 Utility crew 
23/10/2008 Customer claim 13/11/2008 Utility crew 
24/10/2008 Customer claim   
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