Despite the Romans' common use of lead pipes, their aqueducts rarely poisoned people. Unlike other parts of the world where lead pipes cause poisoning, the Roman water had so much calcium in it, that a layer of plaque prevented the water contacting the lead itself.
OMB definition, Office of Management and Budget: the division of the Executive Office of the President that prepares and administers the federal budget and improves management in the executive branch. See more.
The federal government invests heavily in information technology (IT). In recent years, the Office of Management and Budget (OMB) has made efforts to improve the transparency, oversight, and management of the federal government's IT investments.