Presentation and evaluation of early model outputs of use cases for iterative improvement – GTG Webinar – 21 January 2016

Meeting Summary

During this meeting, the technical team from Imperial College London (ICL) and the Institute for Integrated Economics Research (IIER) showed the preliminary results from the model prototype. They showed the water demand per district and how the technology infrastructure modelling can be used to meet water demands and sanitation treatment needs, as well as use case indicators and model functionality.

In the run up to the webinar, GTG Chair, Sampson Mandana briefed sector experts on the progress of the model development and formed sub-groups to review the 3  use case studies comprised  technical experts from Accra and Tema Metropolitan Assemblies, National Development and Planning Council and Ministry of Local Government and Rural Development as well as individuals from Water Research Institute, Zoomlion Company Limited and Community Water and Sanitation Agency (CWSA).

The expert reviewers helped the modelling team to choose and refine metrics for inclusion in the model, discussed caveats for the baseline data and raised the challenges associated with data collection.

The three use cases focus on:

  1. Envisioning outcomes of ongoing WASH projects and further steps to meet macro-level WASH targets

  2. Examine the possibilities and costs of increasing household access to improved potable water sources

  3. Increase availability of clean, accessible, and affordable toilet infrastructure

Explanations of each use case can be found in the November podcast.

As a reminder, the purpose of the model is to:

Use Cases

Xiaonan Wang and  Harry Triantafyllidis from from Imperial College London (ICL) explained the Agent- based model (ABM) which links to the Resource Technology Network Optimisation (RTN).

The model uses a simulation of the population to experiment how different socio-economic

scenarios generate different demands for water resources based on the activities of that  population.  These can then be used to optimise the technologies and networks to improve water resources and linked to KPIs.  The team showed some early results from the model which has generated the drinking water demand profile per MMDA over 24 hour period.  The group then discussed data limitations and reality checks for this result.

Next steps are to:

  1. Refine and improve current use case 1, build functionality for use cases 2 and 3.

  2. Integrate financial charges for pipe connections, water use and toilet use by simulated population based on PURC tariffs, public and private fees.

  3. Build capability to improve scenarios for population and household demographics change to 2030.

  4. Include rainfall patterns and agricultural water demands


We would like to extend a warm welcome to our latest members of the GTG.  We are working to make sure the prototype is functional and useful for users in GAMA and will debut the prototype modelling to date at the end of May in Accra.

Contact us

We welcome your input, questions, comments or feedback on data, prototype development, or any aspect of the programme. 


Webinar slide download – PDF


Webinar audio download – MP3