Enable a water quality run in IWLive Pro

Video quiz

If you want to calculate changes in the age of water over time throughout the network in IWLive Pro, which of the following operations would you need to perform?

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Step-by-step guide

When creating a new run in IWLive Pro, you can choose to run a water quality analysis. One of the uses for a water quality analysis is to calculate changes in the age of water over time throughout the network.

Start by creating a projection run.

  1. In the Headlines tab, Schedule window, right-click the baseline and select Go to baseline.

The IWLive Pro interface, with the context menu for the baseline expanded and Go to baseline being selected and called out with a red arrow.

  1. In the Run Manager toolbar, click Request Projection Run.

In the Run Manager toolbar, Request Projection Run selected and highlighted in red.

  1. In the Request projection dialog, set the start time to April 2 at midnight.
  2. Leave the Duration set to 1 day.
  3. Enter a Run name, such as “Initial Model Run”.
  4. Click OK.

The Request projection dialog, with the Start date/time, Duration, and Run name configured for this example and OK being clicked.

Once the simulation is completed, create a new water quality incident.

  1. From the Run Manager, right-click Initial Model Run and select Create child run.

The Run Manager, with the context menu for the Initial Model Run expanded, and Create child run being selected and called out with a red arrow.

  1. In the New Run dialog, enter a Run Name, such as “Incident Water Quality”.
  2. Set the Duration to 7 days.
  3. Set the Warning Template to Node Water Age Warnings.
  4. Enable Water Quality Run.

In the New Run dialog, the Run Name, Duration, and Warning Template configured for this example and highlighted in red, with Water Quality Run enabled and highlighted in red.

  1. Click OK.

At this point, you can make any changes to the network that are needed, but for this example, proceed with simulating the recent changes.

  1. In the Run Manager, right-click Incident Water Quality and select Simulate.

The Run Manager, with the context menu for Incident Water Quality expanded, and Simulate being selected and called out with a red arrow.

  1. Once the simulation is complete, if you do not see the DMA Warnings window, select Window > Results > DMA Warnings.

The Window menu expanded, with Results selected and, in the flyout, DMA Warnings called out with a red arrow.

On the DMA Summary tab, a list of warnings includes the objects or nodes with a water age that is greater than 65 hours.

  1. To visualize the warnings for a particular DMA, such as DM0404, right-click the Object count and choose Select and find on map.

On the DMA Summary tab, in the DM0404 row, the context menu for Object count expanded, with Select and find on map being selected and called out with a red arrow.

The map is updated to show the warnings.

The GeoPlan, with warnings for DM0404 selected and highlighted on the map.

Another way to visualize the results is to apply the Water Age Contour theme.

  1. From the Window menu, select Themes.

The Window menu expanded, with Themes being selected and called out with a red arrow.

  1. In the Theme drop-down, select Water Age Contours.

In the Theme window, Water Age Contours selected and highlighted in red, and in the GeoPlan, the theme applied.

  1. On the Replay toolbar, click Play.

The Replay toolbar, with the Play button being clicked and highlighted in red.

As the simulation progresses, observe the Water Age Contour map updating over time, as shown in these four snapshots. The top left image was taken first, followed by the top right, the bottom left, and the bottom right.

Four snapshots of the water age contour map updating over time during the simulation. The image taken at the earliest time is on the top left, followed by the top right, the bottom left, and the bottom right.

For further analysis, select and find a specific node on the GeoPlan and graph its results.

  1. On the Tools toolbar, click Graph.
  2. In the GeoPlan, select the node.

In the Tools toolbar, Graph selected and highlighted in red. In the GeoPlan, the node being selected to graph and called out with a red arrow.

  1. In the Select what to graph for dialog, select Age of Water (hours).
  2. Click OK.

The Select what to graph for dialog, with Age of Water (hours) selected.

In this case, the graph shows the age of water increasing over time and stabilizing between 52 to 53 hours.

The graph of the age of water over time with a red vertical line at the approximate point of stabilization.