Paper or paper? In California, shoppers will have only one bag option at the checkout line starting in 2026.

A decade ago, California became the first U.S. state to ban single-use plastic bags, the flimsy sacks that regularly blew into waterways, littered streets and collected in landfills. The prohibition, in the nation’s most populous state, was considered a turning point in the effort to reduce plastic waste.

But the move backfired in a way that few supporters expected. Californians in 2021 actually tossed nearly 50 percent more plastic bags, by weight, than when the law first passed in 2014, according to data from CalRecycle, California’s recycling agency.

A loophole in the initial ban allowed retailers to provide thick-walled plastic bags and charge 10 cents a piece for them. Though technically reusable and recyclable, the heavier-duty sacks still ended up in many trash cans after a shopping trip.

Gov. Gavin Newsom signed legislation on Sunday banning the sale at grocery checkouts of all plastic bags, regardless of thickness. The only option for customers who lack their own reusable shopping bags will be buying paper bags for 10 cents each.

“We deserve a cleaner future for our communities, our children and our earth,” said Rebecca Bauer-Kahan, a Democratic assemblywoman and co-author of the bill, in a statement. “It’s time for us to get rid of these plastic bags and continue to move forward with a more pollution-free environment.”

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