To
be able to adequately feed and support the world’s growing population,
our global economy needs to continue to grow. Water is critical to this
growth. But it can also become the major limiting factor to growth. For
instance, businesses in water-scarce areas are already at risk, and so
investors are increasingly taking water supply into consideration during
their decision-making processes.
Given today’s approach to water management, there is only so much
growth that can be sustained. Gains in efficiency and productivity in
water management and utilization can reduce these risks and enable
higher levels of sustainable growth, but how much higher? How
far-reaching do those gains have to be? And can we make a difference in a
timely enough manner by understanding that the path for sustainable
growth requires more than green solutions – but also requires blue ones?
The answers lie in examining current demand and supply pressures and
looking at trends within each. Demand pressures include population
growth and an increase in water-intensive diets as a portion of the
population moves into increasingly higher water-consumption behaviors.
Demand pressures also include growing urban, domestic and industrial
water usage. Climate change plays a role by creating additional water
demand for agriculture and for reservoir replenishment. On the supply
side, issues such as water transport, availability and variability
present challenges, as does the decline in renewable water resources.
In nearly every one of these categories, trends are moving in the exact opposite direction
necessary to sustain future growth. Taken together, these trends create
“water stress.” And the resulting ecosystem pressures along with
economic and political conflict only exacerbate that stress.
Today, many regions of the world are already water stressed due to
population and economic growth. In fact, 2.5 billion people (36% of the
world population) live in these regions and more than 20% of the global
GDP is already produced in risky, water-scarce areas affecting
production, as well as corporate reputations when competition over water
usages develops.
Given today’s accelerated pace of human development and the slow pace
of managing issues as complex as water resources, tomorrow’s challenges
are already at our door. Whether improving our governance models or our
infrastructure systems, years and even decades (not weeks or months)
are required to implement change!
This is especially troubling when considering analysis by the
International Food Policy Research Institute (IFPRI), which found that
4.8 billion people – more than half the world’s population – and
approximately half of global grain production will be at risk due to
water stress by 2050 if status quo, business-as-usual behavior is
followed.
The IFPRI study also found that 45% of total GDP ($63 trillion) will
be at risk due to water stress by 2050. That’s 1.5 times the size of
today’s entire global economy!
By wasting less, polluting less, reusing more, managing effectively
and becoming more efficient in all uses of water – individual,
collective, agricultural and industrial – we can achieve higher water
productivity levels (economic output per drop) and reduce water stress.
Continued evolution of technology and infrastructure improvements will
enhance water supply capacity for cities and industries while helping
deliver clean drinking water and sanitation services to rural
populations and the urban poor.
In so doing, more than 1 billion people and about $17 trillion in GDP
will no longer be at risk of unsustainable water supplies by 2050.
Only by changing today’s approach to water management and water
productivity (economic output per drop) can we ensure a prosperous
future. This path – one that is Sustainable and Blue – will help ensure a
better world for today’s generation.
No comments:
Post a Comment