Abstract
Water infrastructure world-wide is facing a number of pressures including increasing demand due to population growth and urbanisation, increasing legislative requirements, climate change, and ageing infrastructure. Supporting growth and prosperity across the country require smarter investment decisions to deliver cost-effective and innovative solutions. The focus on investment planning is moving away from the simple economic or risk-based decision to community wellbeing.The New Zealand Treasury has developed a wellbeing framework to guide policy and investment that focuses on improved community outcomes for the nation. The purpose of this framework is to track changes to the wellbeing outcomes over time and improve public policy making, with the ultimate goal of lifting living standards and improving intergenerational wellbeing. This framework, largely based on the OECD wellbeing framework, was adapted for New Zealand (NZ) and includes a stock model to simulate the inter-relationship between investment and wellbeing outcomes. This framework focuses more on providing guidelines around the domains of wellbeing from a macro policy level decision making level, however their linkages to localized infrastructure development are weak.This paper describes a strategy to develop a holistic decision-making framework for three waters (drinking water, wastewater, & stormwater), which include; finding the impact of investment in three waters on community’s wellbeing, conducting performance analysis, and the development of a mathematical model and trade-off model for such investment. The results have suggested that the existing wellbeing framework provides an excellent monitoring framework for water infrastructure, yet to establish inter-relationships between wellbeing factors on a meso-level, a different model needs to be considered.
Highlights
The results have suggested that the existing wellbeing framework provides an excellent monitoring framework for water infrastructure, yet to establish inter-relationships between wellbeing factors on a meso-level, a different model needs to be considered
OECD 2001 [4] illustrates how economic growth is a part of community wellbeing, but it does not capture the full dimension of what makes a community prosper or ensure sustainability in the long-term;
Significant work has occurred in the development of macro level wellbeing frameworks to support policy setting at the national level
Summary
The Context of Investment into Wellbeing There is no doubt that the provision and upkeep of infrastructure services have significant benefits to communities. Most investment in infrastructure has been analysed and planned. Objectives of the Paper This paper describes a strategy to develop a holistic decision-making framework for three waters. Demonstrate the development of a wellbeing performance framework on a specific asset group (three waters) that could be adopted at a Meso-level (city council or municipality level); and,. Explore the interactions between investment streams and impact areas, related to the water services and infrastructure
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