The two bills are related in that the Department of Public Works (DPW) will do the needed work. The first bill arises from new federal environmental rules requiring more treatment of uncovered drinking water, Celeste Amato, a DPW spokesperson, says. The city will cover—that is, bury inside tanks—some of its smaller drinking water sources to protect them from contamination. Some of the larger open reservoirs will get new treatment facilities as needed to comply with the new regulations. The second bill is part of a long-running federal consent decree requiring the city to reduce pollution in the Chesapeake Bay. The city’s aging sewer pipes leak, and storm water runoff is still not contained, though progress is being made. The money to repay the nearly two-thirds of a billion dollars to be borrowed will be collected through city water and sewer bills.