Clean and plentiful water is the cornerstone of prosperous communities. Yet as we enter the 21st century, swelling demand and changing climate patterns are draining rivers and aquifers and pollution is threatening the quality of what remains. NRDC is integrating our expertise in pollution prevention, water efficiency and climate change to sustain America's precious water resources. We're helping cities build green infrastructure that will keep pollution out of waterways and bolster drinking water supplies. And we're working to advance smart water efficiency policies to ensure that communities get the water they need while keeping our lakes, rivers, and streams full and healthy.