Clean Cruise Ship Act of 2008

[AI summary unavailable — showing source text] Clean Cruise Ship Act of 2008 - Prohibits cruise vessels calling on U.S. ports from discharging sewage, graywater, or bilge water into U.S. waters unless: (1) the treated effluent meets specified effluent limits and management standards; (2) the vessel is proceeding at not less than six knots; (3) the vessel is not less than 12 nautical miles from shore; and (4) the vessel is not in a no discharge zone. Prohibits the discharge of sewage sludge, incinerator ash, or hazardous waste into U.S. waters and requires it to be off-loaded at appropriate land-based facilities. Prescribes exceptions for: (1) discharges solely to secure the safety of a vessel or to save a life at sea; and (2) Alaskan vessels until 10 years after enactment. Requires the Administrator of the Environmental Protection Agency (EPA) to promulgate such effluent limits that: (1) are consistent with the capability of the best available technology to treat effluent; (2) require compliance with state and federal water quality standards; (3) take into account the best available scientific information on environmental effects; and (4) require treated discharges to meet specified standards for minimum effluent quality, fecal…