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United States Environmental Protection Agency
Learn the Basics of Nutrient Pollution
Nutrient pollution is one of America's most widespread, costly and challenging environmental problems.
Learn about the problem, its sources and its effects
Adapting to Climate Change
Warming water, droughts and sea level rise can make harmful algal blooms worse.
Find out how a changing climate might lead to more algae
Farmer Heroes Manage Nutrients on Farm
EPA celebrates farmers who take action to reduce nutrient pollution and preserve their water resources.
Read their stories.
Make a Difference
Simple actions at home and in the yard can help prevent nutrient pollution.
See what you can do
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Sources and Solutions
Where it Occurs
In Your Home
In Your Yard
In Your Community
In Your Classroom
What EPA is Doing to Reduce Nutrient Pollution
State Progress Toward Developing Numeric Nutrient Criteria
Tools to Assist States and Tribes
Reports, Research and Resources on Nutrient Pollution
to ask a question, provide feedback, or report a problem.
Chemicals and Toxics
Environmental Information by Location
Land, Waste, and Cleanup
Laws & Regulations
By Business Sector
Laws and Executive Orders
Policy and Guidance
Planning, Budget and Results
Jobs and Internships
Labs and Research Centers