Water quality and agriculture are closely tied. Farmers rely on clean water to keep their fields green, but they also need clean water for their homes, towns and families. Fertilizers and pesticides can move into waterways and build up to dangerous levels. In this Harvest Public Media television special, we'll look at water and agriculture and examines what happens to pristine snow-melt in the Rocky Mountains and how it turns to a toxic 'Dead Zone' in the Gulf of Mexico. We'll see how small towns work to keep their groundwater clean from a legacy of fertilizer use and visit researchers examining frogs and fish exposed to agriculture chemicals. And farmers will demonstrate old and new ways of keeping water clean.