Do Plastic Bag Bans Really Work?

The Temporary June 23, 2025

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It’s each straightforward and laborious to overlook plastic grocery luggage—straightforward as a result of they’re sturdy, mild, free, they usually can double as little trash luggage when you’ve obtained them dwelling and emptied out your groceries, and the luggage’ single-use goal has been served; laborious as a result of the blasted issues get all over the place. Discarded on trash piles, they get caught within the wind and tousled in powerlines, gather round curbs and in gutters, and finally make their method out to the coasts, the place they litter shorelines and even blow out to sea, entangling and suffocating marine life and leaching poisonous chemical compounds into the water. Plastic luggage and different plastic waste additionally discourage tourism in littered areas and scale back waterfront property values. In response to one 2022 examine, plastic waste prices the world $100 billion per 12 months in harm to marine actual property and ecosystems.
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Lawmakers have responded. Since 2010, greater than 100 nations have carried out partial or whole bans or charges on plastic purchasing luggage at both the nationwide or subnational degree. Within the U.S., 611 state or native insurance policies have been enacted from 2008 to 2023—the overwhelming majority, 91%, imposed on the metropolis or township degree.

Are plastic bag bans profitable?

How efficient are the measures, particularly within the locations the luggage do the best hurt—alongside the coasts? A brand new paper in Science requested that query, and the blissful reply the researchers got here up with?Very efficient—in some instances slashing the variety of plastic luggage scattered on shorelines by near 50%. With such environmental measures as recycling and biofuels typically not residing as much as their hype, regulating plastic luggage seems to rely as a shiny inexperienced win.

“I used to be shocked to see how efficient plastic bag insurance policies have been in decreasing plastic bag shoreline litter,” says Kimberly Oremus, affiliate professor within the College of Marine Science and Coverage on the College of Delaware, and co-author of the Science paper. “Whereas they don’t remove the issue, they do assist mitigate it. What makes me hopeful is the rising quantity and geographic unfold of those insurance policies within the U.S.”

The brand new examine, which was led by environmental economist Anna Papp, an incoming postdoctoral scholar at MIT, reviewed the make-up of particles collected throughout 45,067 shoreline cleanups from January 2016 to December 2017, evaluating the outcomes of these locales that lay inside jurisdictions that had carried out plastic bag restrictions to those who hadn’t. Within the areas that did have bans or restrictions in place, there have been between 25% to 47% fewer luggage than in unregulated areas. What’s extra, there have been 30% to 37% fewer experiences of entangled animals in these areas.

How do plastic bag bans work?

The laws on luggage that have been carried out within the so-called handled areas have been all considered one of three sorts: outright bans on plastic luggage; partial bans allowing thicker, reusable luggage that don’t journey as simply on the wind; and costs—basically taxes—on plastic luggage, paid as a part of the grocery invoice at checkout traces. Of the three, the partial bans have been least efficient at eradicating plastic luggage from the coastal waste stream. Charges, surprisingly, have been more practical than outright bans; the authors don’t have a definitive rationalization for that, however they do have some concepts.

“One speculation,” says Oremus, “is that in a minimum of some instances, the income from charges is getting used to additional scale back litter. One other speculation is that plastic bag charges are utilized to extra retailers than plastic bag bans. [Also], many full bans embody exemptions for sure retailers or bag sorts, akin to permitting plastic takeout luggage at eating places for meals security. Our ultimate speculation is that charges may have larger compliance charges than a full ban.”

No matter occurs within the numerous jurisdictions doesn’t keep in these jurisdictions. The researchers reported what they termed each unfavorable and optimistic spillover from place to position, with some areas with laws in impact nonetheless accumulating luggage that blew in from unregulated districts, and a few unregulated locations turning out to be a minimum of somewhat bit cleaner in the event that they shared a border with a regulated neighborhood. On the entire, better consistency all through a bigger geographic footprint is achieved by statewide bans, quite than patchwork county or township bans.

“Statewide laws cowl the biggest variety of folks and cleanups in our time interval,” says Papp. ”The robustness of their results could also be resulting from their extra complete geographical protection, minimizing issues associated to spillovers, akin to customers bringing plastic luggage from unregulated to regulated areas.”

What extra could be carried out to scale back plastic waste?

Papp and Oremus see a necessity for continued plastic restrictions not simply within the U.S., however elsewhere. One 2022 survey from the Group for Financial Cooperation and Improvement (OECD) that they cite of their paper, for instance, discovered that elements of Africa have 12 occasions extra uncollected or mismanaged plastic waste than the U.S., all of which must be managed or eradicated. Towards that finish, report Papp and Oremus, 175 nations at the moment are in talks to create the primary world plastics treaty. The necessity for such a pact is urgent. Over 460 million metric tons of plastics are produced worldwide yearly, in line with the Worldwide Union for the Conservation of Nature, and over 20 million metric tons of that winds up discarded within the setting. That waste determine is ready to triple by 2060, initiatives the OECD.

“Plastic luggage are simply one of many many forms of plastic waste within the setting,” says Papp, “so, bag laws are removed from a whole answer. Extra-comprehensive options that deal with the manufacturing or provide of plastics are probably wanted.”