Rainwater harvesting captures rainfall for later use. Learn how rooftop systems, storage tanks and agricultural harvesting can strengthen water security.
Water conservation means reducing waste while protecting rivers, aquifers and ecosystems so today's water use does not undermine future supply.
The global water crisis is about access, quality, scarcity and management—not Earth running out of water. Here’s why billions still lack security.
Water scarcity is an imbalance between usable water and demand. Learn how drought, farming, groundwater, pollution and climate change intensify it.
