Jump to main content.


The Environmental Protection Agency (EPA) is initiating a contaminant nomination process by which the public can nominate chemical and microbial agents for consideration for the fourth drinking water Contaminant Candidate List (CCL 4).

EPA is hereby requesting nominations of chemical and microbial contaminants for inclusion on the CCL 4 as well as any occurrence and health effects information required to support individual nominations

DATES: Nominations must be received on or before June 22, 2012.


Start Nomination »

Returning Users





New Users

Registration is not required to submit a nomination. However registration is required to SAVE and EDIT a nomination. If you do not wish to register, click Start Nomination to begin.

Register »

If you have forgotten your username or password, or if your username or password doesn't work you must contact Clifton Townsend (townsend.clifton@epa.gov) at (202) 564-1576 to retrieve it.


Local Navigation


Jump to main content.