from spring water to mineral water and the increasingly popular purified and distilled water. You've probably seen these labels on bottles in stores or heard about them from health-conscious ...

However, while surface soil only handles a small volume and rapid flow, deep soil retains significantly more water, providing the environment where CSP1-3 becomes active. Since carbon and nitrogen ...

But the country is also a global leader in what's known as purified recycled water - that is, turning sewage water into safe and clean drinking water. Professor Stuart Khan, head of civil ...