Printable Map - Nitrogen/Phosphorus Criteria Progress
The map below shows a national summary of current numeric total nitrogen and total phosphorus EPA-approved criteria and those anticipated in the near future based on state-provided information.
|District of Columbia|
|Commonwealth of Northern Marianas|
|US Virgin Islands|
|Level 5||Complete set of N and P criteria for all watertypes**|
|Level 4||2 or more watertypes with N and/or P criteria|
|Level 3||1 watertype with N and/or P criteria|
|Level 2||Some waters with N and/or P criteria|
|Level 1||No N and/or P criteria|
*When these years are selected, progress is based on milestone information provided by the state or territory.
**"Watertypes" on the national maps and tables within this webpage refers to three watertypes: lakes/reservoirs, rivers/streams, and estuaries. Criteria for additional watertypes are included under the State/Territory Details tab.