It's hard to find a U.S. customer who doesn't support recycling, but it's also tough to make a buck on the business these days, Waste Management CEO David Steiner said Thursday.

Despite positive signs in much of its business, the waste removal company has come under pressure as recycling commodity prices fell 14 percent in the first quarter of 2015 from the same period a year ago. Waste Management's quarterly revenue fell by $356 million year over year, $70 million of which came from lower recycling receipts.