Weary of plastic litter, Grand Canyon National Park officials were in the final stages of imposing a ban on the sale of disposable water bottles in the Grand Canyon late last year when the nation’s parks chief abruptly blocked the plan after conversations with Coca-Cola, a major donor to the National Park Foundation.

Stephen P. Martin, the architect of the plan and the top parks official at the Grand Canyon, said his superiors told him two weeks before its Jan. 1 start date that Coca-Cola, which distributes water under the Dasani brand and has donated more than $13 million to the parks, had registered its concerns about the bottle ban through the foundation, and that the project was being tabled. His account was confirmed by park, foundation and company officials.

A spokesman for the National Park Service, David Barna, said it was Jon Jarvis, the top federal parks official, who made the “decision to put it on hold until we can get more information.” He added that “reducing and eliminating disposable plastic bottles is one element of our green plan. This is a process, and we are at the beginning of it.”

Mr. Martin, a 35-year veteran of the park service who had risen to the No. 2 post in 2003, was disheartened by the outcome. “That was upsetting news because of what I felt were ethical issues surrounding the idea of being influenced unduly by business,” Mr. Martin said in an interview. “It was even more of a concern because we had worked with all the people who would be truly affected in their sales and bottom line, and they accepted it.”