Cost Benefit Analysis for Water Investments Training Course

Participants can develop an incremental lifecycle cost model for a water-sector proposal.

• Resource costing uses quantities, unit rates, price bases, and timing
• Capital expenditure distinguishes construction, land, engineering, supervision, and contingencies
• Operating expenditure separates energy, chemicals, labour, repairs, and administration
• Lifecycle costing schedules rehabilitation, asset replacement, residual value, and decommissioning
• Opportunity cost values donated land, volunteer labour, and diverted water
• Transfer payments distinguish taxes, subsidies, tariffs, grants, and debt service
• Incremental costs compare proposed service arrangements against the counterfactual

Participants can select and apply suitable methods to value principal water-sector benefits.

• Health benefits value avoided disease using burden-of-disease and cost-of-illness methods
• Time savings quantify collection, queuing, travel, and productive-use changes
• Productivity gains separate absenteeism reductions from wage and employment effects
• Water reliability benefits measure avoided coping costs and interruption losses
• Agricultural benefits estimate yield, cropping, and input changes under irrigation
• Environmental services value ecosystem changes through stated and revealed preferences
• Benefit transfer tests study similarity, unit values, and income adjustments

Participants can estimate demand-side benefits while testing household affordability and payment assumptions.

• Household surveys define service levels, use patterns, and expenditure baselines
• Contingent valuation elicits willingness to pay using credible service scenarios
• Choice experiments estimate attribute values for reliability, quality, and connection
• Revealed preference uses coping expenditure, travel cost, and hedonic evidence
• Demand curves distinguish consumer surplus from tariff revenue and collections
• Affordability analysis applies expenditure shares, poverty data, and payment schedules
• Sampling plans address seasonality, nonresponse, recall bias, and enumerator effects

Participants can convert financial project data into an economic appraisal using appropriate price adjustments.

• Financial analysis records cash flows, tariffs, grants, loans, and taxes
• Economic analysis applies shadow prices to real resource consumption and outputs
• Standard conversion factors adjust market prices where detailed factors unavailable
• Shadow wage rates account for unemployment, informality, and foregone output
• Border parity pricing values tradable equipment, fuel, chemicals, and materials
• Foreign exchange premiums capture scarcity costs in import-dependent investment programmes
• Tariff forecasts reconcile utility revenue requirements with household affordability constraints

Participants can calculate and interpret core economic appraisal indicators for competing alternatives.

• Real and nominal cash flows remain consistent with selected discount rates
• Discounted cash flow models calculate net present value and benefit-cost ratio
• Internal rate of return interpretation identifies multiple-rate and reinvestment limitations
• Discount-rate selection considers public guidance, project duration, and intergenerational effects
• Residual values reflect remaining asset service potential at appraisal close
• Spreadsheet audit checks signs, timing, units, formulas, and source links
• Decision rules compare mutually exclusive alternatives using incremental net benefits

Participants can test whether investment recommendations remain valid under uncertain future conditions.

• Switching values identify assumptions that reverse investment recommendations
• One-way sensitivity analysis ranks inputs through tornado diagrams
• Scenario analysis combines drought, demand, energy, and construction assumptions
• Monte Carlo simulation models correlated uncertainty using probability distributions
• Risk registers assign owners, controls, triggers, and residual ratings
• Climate stress testing examines hydrology, flood exposure, and asset performance
• Real-options thinking values staged investment under unresolved demand uncertainty

Participants can incorporate non-market impacts, equity considerations and safeguards into appraisal findings.

• External cost assessment addresses pollution, abstraction, greenhouse gases, and biodiversity
• Distributional weights test welfare impacts across income groups and locations
• Gender analysis identifies time burdens, safety exposure, and decision rights
• Safeguard screening recognises resettlement, indigenous peoples, and downstream impacts
• Equity objectives distinguish aggregate efficiency from pro-poor service priorities
• Multi-criteria analysis structures non-monetised criteria alongside economic evidence
• Ethical valuation documents limits, uncertainty, and affected-community perspectives

Participants can adapt appraisal methods to common water, sanitation and resilience investment cases.

• Rural water supply appraisals compare point sources, piped systems, and maintenance models
• Urban sanitation analysis traces containment, emptying, transport, treatment, and reuse
• Non-revenue water projects value production savings, deferred capacity, and service reliability
• Flood resilience investments estimate avoided damages using exceedance probability curves
• Irrigation modernisation weighs farm benefits against environmental flow requirements
• Emergency WASH decisions use rapid assumptions, thresholds, and staged appraisal
• Portfolio ranking applies budget constraints, complementarities, and implementation readiness

Participants can present transparent cost-benefit evidence and plan its use in investment decisions.

• Appraisal reports state recommendation, assumptions, evidence quality, and decision conditions
• Results tables present undiscounted flows, discounted values, and key indicators
• Benefit registers link valuation methods, data sources, owners, and update dates
• Assumption logs record rationale, uncertainty ranges, and approval status
• Independent review checks counterfactuals, double counting, optimism bias, and arithmetic
• Decision briefings explain trade-offs without obscuring distributional consequences
• Application plans set data actions, review gates, and reporting milestones