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Thornton, CO Trash & Recycling: Recycling Requirements (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Recycling container
City-supplied green cart
Cans
Rinse aluminum, tin, steel before recycling
Plastics
Rinse; only director-approved codes accepted
Ownership
Curbside recyclables become city property
Weight limit
350 lbs per container, contents included
Penalty
Fine under § 1-8(a) general penalty

Summary

Thornton's curbside recycling service is optional and delivered through city-supplied green containers under City Code Chapter 58, Article III. Customers must rinse cans and eligible plastics clean before setting them out, and only materials the code or the environmental services director designates are accepted. Anything else placed in a green cart, or recyclables left in the right-of-way, becomes city property and cannot be reclaimed by anyone but city crews.

(j)No person shall introduce refuse, contaminated materials, or any materials which are not accepted for recycling, under the provisions of this article, into a city-provided recycling container designated for recyclable materials...(l)Preparation of recyclable materials accepted by the city shall include but not be limited to the following:...(2)All aluminum, tin, and steel cans must be rinsed and free of food materials and liquid prior to placement into the recycling containers.(3)All plastic containers, marked with a recycling code designated as acceptable by the director for city collection, must be rinsed clean prior to placement into the recycling container...(m)Only those recycling materials specified within subsection (l) of this section or as designated by the director shall be accepted for collection by the city.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).

Full Breakdown

Section 58-56 makes solid waste and recycling collection a city-provided service that is optional to customers, administered by the city manager through rules set within Article III. Under Section 58-57, the city issues black containers for refuse and green containers for recyclables, and defines recyclable materials to include newspapers, aluminum and tin cans, plastic bottles, cardboard, magazines, office paper, junk mail, phone books, aerosol cans, foil, and glass bottles. Section 58-59(j) makes it unlawful to introduce refuse, contaminated materials, or anything not accepted for recycling into a city-provided recycling container.

Section 58-59(l) sets the preparation standard: aluminum, tin, and steel cans must be rinsed and free of food materials and liquid, and plastic containers marked with a recycling code the director has designated as acceptable must be rinsed clean, before either goes into the container. Section 58-59(m) limits acceptance strictly to materials listed in subsection (l) or otherwise designated by the director, so items outside that list are refused. Once recyclables are set at the curb or placed in a city container in the right-of-way, Section 58-59(b) makes them city property, and it is unlawful for anyone other than a city employee to remove or transport them, a rule aimed at scavengers who pull cans and bottles before the truck arrives.

Section 58-60(d) caps the combined weight of a container and its contents at 350 pounds and requires the lid to close without exceeding a 45-degree gap. Violations of Article III, including recycling contamination, are punished under Section 58-58 by referring to the general penalty in Section 1-8(a).

Violations & Fines

Placing non-recyclable, contaminated, or unlisted material in a green recycling container violates Section 58-59(j) and (m) and is punished as a general Code violation under Section 58-58, which applies the Section 1-8(a) penalty: a fine up to the maximum amount state law authorizes for municipal courts. Removing recyclables from a curbside container or the right-of-way before city collection also violates Section 58-59(b), since those materials are already city property once set out.

Frequently Asked Questions

What can go in my Thornton recycling cart?
Only materials the city designates as acceptable, listed in Section 58-57: newspapers, cardboard, magazines, office paper, junk mail, phone books, aluminum and tin cans, plastic bottles with an approved recycling code, glass bottles, aerosol cans, and foil. Section 58-59(m) limits collection to that list or items the environmental services director specifically adds.
Do I need to rinse cans and bottles before recycling?
Yes. Section 58-59(l) requires aluminum, tin, and steel cans to be rinsed and free of food and liquid, and plastic containers with an approved recycling code to be rinsed clean, before you place either in the green container. Dirty containers can contaminate the load.
Can someone else take items out of my recycling cart before pickup?
No. Under Section 58-59(b), recyclables placed at the curb or in a city-supplied container in the right-of-way become city property. It is unlawful for anyone besides a city employee acting in the course of duty to remove or transport them, a rule enforced against unauthorized scavenging of cans and bottles.
What happens if I put trash in my recycling bin?
It's a Code violation. Section 58-59(j) bars introducing refuse or contaminated materials into a city-provided recycling container, and Section 58-58 punishes any Article III violation under the Section 1-8(a) general penalty, a fine up to the maximum state law allows municipal courts to impose.

Sources & Official References

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