The Environmental Protection Agency (EPA) is promulgating designated uses and associated water quality criteria for six waterbodies and an area of coastal waters known as the coastal ring in the Commonwealth of Puerto Rico. These waterbodies are: Mayaguez Bay (from Punta Guanajibo to Punta Algarrobo); Yabucoa Port (from Punta Icacos to Punta Yeguas); Guayanilla and Tallaboa Bays (from Cayo Parguera to Punta Verraco); Ponce Port (from Punta Carenero to Punta Cuchara) and San Juan Port (from the mouth of R[iacute]o Bayam[oacute]n to Punta El Morro), as well as the area of coastal waters known as the coastal ring, defined as all coastal waters from 500 meters seaward to a maximum of three miles seaward. Through this promulgation, the Federally designated use of primary contact recreation and the associated water quality criteria are added to the Commonwealth's designated uses for the previously referenced embayments and the coastal ring (referred to collectively in this preamble as the "Subject Waterbodies").