However, when the type of water being used and
the local water scarcity was taken into account, the water footprint of the M&M's ® (31 L H2Oe per 250 g packet) was actually one - tenth the footprint of the sauce (350 L H2Oe per 375 g jar).2
It takes into account, for example, what sort of water has been used at all stages of the life cycle (eg natural rainfall over agricultural land, water from rivers, lakes and groundwater resources); the context of
local water scarcity; and whether the water would otherwise be used for another activity of critical importance.
«This means that taking into account the way the water use contributes to
local water scarcity, the water footprint of producing 1 L of milk on these farms had the equivalent impact as the direct consumption of only 1.9 L of water.
Not exact matches
There is a need to improve the understanding of
water impacts and dependencies at
local levels, where the impacts of
water scarcity or
water abundance are directly felt.
But interventions tend to solve
water scarcity problems at a
local level, while aggravating
water scarcity downstream.
From Florida to Minnesota, and from Alaska to New York, Federal agencies have partnered with communities to provide funding and technical assistance to address
local climate impacts such as sea level rise, flooding, and
water scarcity.
With the era of dam building coming to an end in much of the developed world, places such as California and Australia are turning to
local and less expensive methods to deal with
water scarcity, including recycling wastewater, capturing stormwater, and recharging aquifers.
And there is such a system that can offer a variety of benefits to not just the grower, their
local neighborhood, and their community, but can also address some of the larger challenges that we as a species are facing, such as
water and food
scarcity, decreasing soil health, and resource depletion.