The Environmental Protection Agency has made it easier for cities to keep dumping raw sewage into rivers by letting them delay or otherwise change federally imposed fixes to their sewer systems, according to interviews with local officials, water utilities and their lobbyists.

Cities have long complained about the cost of meeting federal requirements to upgrade aging sewer systems, many of which release untreated waste directly into waterways during heavy rains — a problem that climate change worsens as rainstorms intensify. These complaints have gained new traction with the Trump administration, which has been more willing to renegotiate the agreements that dictate how, and how quickly, cities must overhaul their sewers.

The actions are the latest example of the Trump administration’s efforts to roll back nearly 95 environmental rules that it has said are too costly for industry or taxpayers. That list grew on Thursday, when the administration stripped clean-water protections from wetlands, streams and other waterways.

“When you walk into the current E.P.A., as a local government, you’re not treated as evil,” said Paul Calamita, a lawyer who represents cities seeking to change their agreements. “Which we’d gotten, quite frankly, from prior administrations.”