Título: IMPROVING THE COMMUNICATION WITH STAKEHOLDERS: The Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (Hi).
Autor: Estruch-Juan, Elvira; Cabrera Rochera, Enrique; Gomez Selles, Elena; Del Teso-March, Roberto
Resumen: [EN] Water infrastructures are rapidly ageing without being properly replaced. Communicate the state
of the network and the sector¿ needs to stakeholders is key for guaranteeing the sustainability of water
and sewerage systems. The Infrastructure Value Index (IVI) is becoming a standard in the water industry
as a communication tool. However, as a single value metric can mask key information. The
complementary use of the Infrastructure Degradation Index (IDI) and the Infrastructure Histogram (Hi)
can provide a better understanding of the network¿s state while maintaining the simplicity of the analysis
needed for public dissemination. The IVI is focused on the value of the infrastructure, the IDI on its
median remaining life. The HI provides a detailed but simple picture of the network¿s remaining life,
providing a clear idea of the magnitude of the investments needed in the future for maintaining the
infrastructure.
