When seasick on the ocean, water will seem entirely overabundant. But not all water is equal and while seawater is great for fish, without expensive desalination, it doesn’t provide any of the drinking, cleaning or irrigation uses for which people need fresh water. That type of water – the kind that can be easily and safely consumed – is in relatively short supply.
Only a small fraction of the earth’s water resources is potable and the twin pressures of climate change and global population growth are squeezing our clean water supplies tighter than ever before. The developing world has been hardest hit, but North America is increasingly facing the same problem of maintaining both the quantity and quality of our precious clean water supplies. (more…)