Earle Bernard Phelps (July 10, 1876 – May 29, 1953) was a chemist, bacteriologist and sanitary expert who served in governmental positions and as an academic in some of the leading universities in the U.S.
He is known for his contributions in sewage disinfection, water chlorination, sewage treatment, milk pasteurization, shellfish control, and for describing the “oxygen sag curve” in surface water bodies.