40 CFR § 140.1 - Definitions.
For the purpose of these standards the following definitions shall apply:
(a) Sewage means human body wastes and the wastes from toilets and other receptacles intended to receive or retain body wastes;
(b) Discharge includes, but is not limited to, any spilling, leaking, pumping, pouring, emitting, emptying, or dumping;
(e) New vessel refers to any vessel on which construction was initiated on or after January 30, 1975;
(f) Existing vessel refers to any vessel on which construction was initiated before January 30, 1975;
(g) Fecal coliform bacteria are those organisms associated with the intestines of warm-blooded animals that are commonly used to indicate the presence of fecal material and the potential presence of organisms capable of causing human disease.