In this subtitle the following words have the meanings indicated. “Major project” means an extension, project, or program of water and sewer facilities. “Major project” includes: a sewer main at least 15 inches in diameter; a water main at least 16 inches in diameter; and a sewage or water pumping station, force main, and storage or other major facility. “Major project” does not include a sewer main or water main that: provides only local service; is 2,000 feet or less; and is built to avoid unnecessary and uneconomical duplication when a major project is constructed. “Program” means a 6–year projected program by the Commission of capital improvements for water and sewer facilities.