Chemical recycling is back on the agenda in two of the largest waste-generating states in the U.S., with parallel debates in California and New York shaping how regulators and courts treat conversion technologies.

The discussions, tracked by Waste Dive, touch both legislative chambers and legal proceedings in the two states. At stake is a definitional question with material consequences: whether chemical recycling processes count as manufacturing facilities or as solid waste handling operations under state law.

That classification determines which permitting regime applies, which agency holds oversight, and how feedstock volumes flowing into pyrolysis, gasification and depolymerization plants are accounted for in state diversion and recycling statistics.

What does the classification change?

When a state reclassifies chemical recycling as manufacturing, facilities escape solid waste permitting requirements and the public review processes that accompany them. Opponents of such reclassification argue it removes scrutiny from operations that handle large volumes of plastic feedstock and produce outputs — fuels, chemical intermediates — that may not return to polymer production at all.

The California and New York debates sit within a broader national pattern. Legislatures in a majority of U.S. states have already passed laws defining chemical recycling as manufacturing rather than waste management, a movement driven largely by plastics and chemical industry lobbying and resisted by environmental groups and some recyclers.

California and New York, both Democratic-led states with aggressive circularity and extended producer responsibility commitments on the books, have become the most contested terrain for that debate.

Which material stream is affected?

The policy fight concerns hard-to-recycle plastics — films, multi-layer packaging and other polymer streams that mechanical recyclers generally cannot process at scale. Chemical recyclers claim their technologies can capture those streams; critics counter that the mass-balance accounting and fuel-oriented outputs risk inflating recycling rates without closing any material loop.

For municipal waste agencies and contract-holders in both states, the outcome will influence what counts toward diversion targets and whether conversion facilities can be sited under lighter regulatory burdens.

What happens next?

The trajectory in each state differs. In New York, legislative proposals have repeatedly sought to define chemical recycling favorably for operators while environmental committees have pushed back. In California, the debate intersects with implementation of the state's broader plastics law, where definitions of recycling and recovery will determine which technologies can claim credit.

Legal proceedings add a second front: litigation over permitting and classification can set precedents that outlast any single legislative session.

The milestone to watch is the next legislative session deadline in each state — and any court ruling that settles whether chemical recycling stands inside or outside the waste regulatory perimeter.