Nutrient pollution occurs when too much nitrogen or phosphorus enters a waterway, and is often caused by human activities. This can harm the waterway and aquatic life, and produce unsightly and sometimes harmful algal blooms. Do your part to protect our waterways from nutrient pollution. NOTE: If you need captions, please click the CC button on the player to turn them on. For more information about Nutrient Pollution, go to www.epa.gov/nutrientpollution For more about EPA: www.epa.gov/ We accept comments according to our comment policy: blog.epa.gov/blog/comment-policy/

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