There are physical causes and human causes of water insecurity (Edexcel A-Level Geography): Flashcards

Water stress threshold (m3/person/year)

1000-1700 m3

Water scarcity threshold (m3/person/year)

500-1000 m3

Physical water scarcity (% threshold)

75% of blue water flows used

Economic water scarcity cause

Lack of capital, technology & governance

Water insecurity

Lack of quality water for livelihoods & wellbeing

% world's water in 10 countries

60%

Richer countries water use vs average

Up to 10x more per head

Physical factors reducing water availability

EVT, precipitation, geology, topography, salt encroachment

Human factors reducing water availability

Contamination, over-abstraction, pop. growth, rising living standards, economic growth

Water Poverty Index parameters (5)

Resources, Access, Capacity, Use, Environment