The next few decades will be the most rapid period of urban growth in human history, with 2.6 billion additional urban dwellers expected by 2050 (UNPD, 2011). All pleople will need water, but surprisingly little is known globally about where large cities obtain their water or the implication of this infrastructure for the global hydrologic cycle.
More than 2.5 billion people don’t have access to basic levels of fresh water for at least one month each year – a situation growing ever more critical as urban populations expand rapidly
Traditionally, cities, facing increased demand for water, along with variable supply, have relied on large-scale, supply-side infrastructural projects such as dams and reservoirs.
This is termed ‘supply-side’ management. According to Robert Brears in his blog, this supply-side management is out dated.
Its costly in economic, environmental and political terms. Read More
October 11, 2014 – The governor of the Brazilian state of Sao Paulo has asked for emergency clearance to siphon the remaining water out of the main reservoir serving Sao Paulo city, which has almost run dry. After nine months of unprecedented drought, 95% of the water has gone
Chinese sanitation workers in Shanghai fish out thousands of dead pigs found floating in the Huangpu (March 2013)
China has not only problems solving their air pollution. Poor water quality is also of serious concern.
Therefore the Minister of Environmental Protection announced a trillion-yuan plan to reduce water pollution in a country where a fifth of the rivers are consider to be toxic, and two fifths of poor or very poor quality. Read More