This is an important day for all of us to pause and join with our colleagues in honoring the committed staff who work to save the lives of others, often at great risk to their own.
World Humanitarian Day is a commemoration of their sacrifice and a sober reminder that our work is far from done. The SHEP NGO supports the distribution of food and water to the insecure, vulnerable and displaced as a result of regional drought and the crisis in Northern Mali. In Sudan and South Sudan, we provide healthcare, sanitation and protection to millions uprooted from their homes by violence. And in Colombia, Haiti and Ecuador, aid workers deliver emergency assistance to internally displaced persons and refugees.
The level of air pollution in Pakistan's two largest cities, Karachi and Lahore, is estimated to be 20 times higher than World Health Organization standards, and continuing to rise. Islamabad, the capital, is perpetually smothered by a thick cloud of smog that hides views of the Margalla Hills that tower over the city's tree-lined streets.
Water covers over 70% of the Earth's surface and is a very important resource for people and the environment. Water pollution affects drinking water, rivers, lakes and oceans all over the world. This consequently harms human health and the natural environment.
Now that you know how nature treats water, let's see how it's done in the water plant before we consume it in a glass of water.
Water treatment in a typical water treatment plant is shown in the picture below. Based on the characteristics of the raw water and on other factors, this treatment process may vary considerably from place to place. Read More