Water is health
Clean hands can save your life.
Water is essential to human health. The human body can last weeks without food, but only days without water. Water is essential to our survival. Regular handwashing, is for example one of the best ways to remove germs, avoid getting sick, and prevent the spread of germs to others. Up to one trillion germs can live in one gram of poop.
As for the human body, in average it is made of 50-65% water. Babies have the highest percentage of water; newborns are 78% water. Every day, every person needs access to water for drinking, cooking and personal hygiene. Water is essential for sanitation facilities that do not compromise health or dignity. The World Health Organization recommends 7.5 liters per capita per day will meet the requirements of most people under most conditions. A higher quantity of about 20 liters per capita per day will take care of basic hygiene needs and basic food hygiene.
Despite impressive gains made over the last decade, 748 million people do not have access to an improved source of drinking water and 2.5 billion do not use an improved sanitation facility. Investments in water and sanitation services result in substantial economic gains. The return on investment of attaining universal access to improved sanitation has been estimated at 5.5 to 1, whereas for universal access of improved drinking-water sources the ration is estimated to be 2 to 1.To cover every person worldwide with safe water and sanitation is estimated to cost US$ 107 billion a year over a five-year period.
Water is nature
Ecosystems lie at the heart of the global water cycle.
Ecosystems – including, for example, forests, wetlands and grassland – lie at the heart of the global water cycle. All freshwater ultimately depends on the continued healthy functioning of ecosystems, and recognizing the water cycle is essential to achieving sustainable water management. Yet most economic models do not value the essential services provided by freshwater ecosystems. This leads to unsustainable use of water resources and ecosystem degradation. For example, the Okavango river in Africa is one of the last unspoilt ecosystems on earth. Pollution from untreated residential and industrial wastewater and agricultural run-off also weakens the capacity of ecosystem to provide water-related services.
There is a need to shift towards environmentally sustainable economic policies that take account of the interconnection between ecological systems. One challenge is to maintain a beneficial mix between built and natural infrastructure and provision of their respective services.
Economic arguments can make the preservation of ecosystems relevant to decision-makers and planners. Ecosystem valuation demonstrates that benefits far exceed costs of water-related investments in ecosystem conservation. Valuation is also important in assessing trade-offs in ecosystem conservation, and can be used to better inform development plans. Adoption of ‘ecosystem-based management’ is key to ensuring water long-term sustainability.
- See more at: http://www.unwater.org/worldwaterday/learn/en/?section=c325497#sthash.F2rQpNP4.dpuf