Rehabilitation interventions in urban water supply assets using the multicriteria decision tool ELECTRE III

Abstract

The current paper briefly presents the infrastructure asset management (IAM) methodology developed in the framework of the AWARE-P project for the comparison of alternative rehabilitation solutions and applies it to a Portuguese water supply system taking into consideration different criteria. These criteria incorporate three assessment dimensions – performance, cost and risk – expressed by several assessment measures (e.g., investment cost, risks of pipe leakage, risk of pipe burst and infrastructure index value). Criteria are aggregated by a Multiple Criteria Decision-Aid (MCDA) technique – the ELECTRE III method. Alternative rehabilitation solutions were established and assessed using this approach. Results are presented and discussed.