(Source – wri.org)
Physical water scarcity
When there is not enough freshwater to meet the demand of people living in a place.
Economic water scarcity
When there is enough freshwater available to meet demands of the population, but they lack the technology/resources to access that water. Many parts of Sub-Saharan Africa experience economic water scarcity.
Causes & impacts of droughts
Environmental consequences of agriculture on water quality
Eutrophication & Salinization info pdf – Irrigation & Agriculture – General info
New Zealanders are becoming concerned over the deterioration of water quality (including eutrophication) in their rivers. See this story from the Guardian (March 2019)
The Aral Sea is a large-scale example of the negative environmental consequences of agriculture.