EPA is including twelve pathogens on the final Candidate Contaminant List 3 (CCL 3), one more than the eleven pathogens on the Draft CCL 3. The Agency is adding Adenovirus, Enterovirus, and Mycobacterium avium, and is removing Vibrio cholerae and Entamoeba histolytica from the Final CCL 3. The protocol EPA used to select the microbial contaminants for the Draft CCL 3 is described in detail in the February 21, 2008, notice (73 FR 9631, 9644; USEPA, 2008a). Except for a minor change in the scoring step of the microbial CCL 3 process, (see the Final CCL 3 Microbes: PCCL to CCL Process) the protocol for selecting pathogens for the final CCL 3 remains the same as the protocol for the draft CCL 3. Specifically, this step of the process for identifying the universe is unchanged from the Draft CCL 3.