To amend the Federal Water Pollution Control Act to provide assistance for nutrient removal technologies to States in the Chesapeake Bay watershed.

Chesapeake Bay Watershed Nutrient Removal Assistance Act - Amends the Federal Water Pollution Control Act to direct the Administrator of the Environmental Protection Agency to provide grants to States and municipalities to upgrade municipal wastewater treatment plants of a specified capacity and located within the Chesapeake Bay watershed with nutrient removal technologies.