Water Supply System Feasibility Assessment
This model supported a technical and financial feasibility assessment for developing a new water supply system for a small city. The major uncertainties addressed include the following:
- Whether the as-built system will have sufficient capacity, or will need to be augmented with additional costs and time;
- Whether the water quality of the delivered water will be acceptable. If not, an interception system would be required to prevent poorer-quality water from reaching the wells;
- Costs and schedule for construction and operation of the system.
The following stages are simulated in this model:
- Initial installation and field test of system capacity;
- Decision whether system upgrade is required, do the upgrade if necessary;
- Install pumps and carry out long-term test;
- Decision whether low-quality water interceptor is required, install if necessary;
- Complete the system infrastructure;
- Commission the system;
- Operate for 20 years, tracking income and expenses.
A financial model tracks capital costs and depreciation, and operating income and expenses for the system.