Every time it rains, fertilizers, pesticides, and animal waste from farms and livestock operations wash nutrients and pathogens-such bacteria and viruses-into our waterways.
It’s also a major contributor of contamination to estuaries and groundwater. In the United States, agricultural pollution is the top source of contamination in rivers and streams, the second-biggest source in wetlands, and the third main source in lakes. Around the world, agriculture is the leading cause of water degradation. Not only is the agricultural sector the biggest consumer of global freshwater resources, with farming and livestock production using about 70 percent of the earth’s surface water supplies, but it’s also a serious water polluter.
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