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Contra Costa County, CA Trash & Recycling: Recycling Rules (2026)

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

Key Facts

Governing chapter
Ordinance Code Chapter 418-10
Materials required
12 categories, from aluminum to paper
Full compliance date
January 1, 1996
Enforcement point
Landfill gate refuses uncertified haulers
Program review
Recertified at least every 5 years

Summary

Contra Costa County won't let a landfill operator accept solid waste from a hauler whose local agency isn't running a certified recycling program. Chapter 418-10 has required haulers to divert twelve specific materials, from aluminum cans to yard waste, since the program phased in fully back in 1996.

City-specific rules exist: Brentwood, and San Ramon have their own recycling rules rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Beginning January 1, 1993, an operator of a landfill shall not accept solid waste from the haulers of a local agency that is not implementing a recycling program approved and certified by the board as satisfying the requirements of this chapter. ... The recycling program shall include collection or diversion of the following materials: (a) aluminum cans, (b) glass containers, (c) newsprint, (d) PET bottles, (e) clear HDPE bottles, (f) colored HDPE bottles, (g) steel and tin-plated cans, (h) cardboard, (i) polystyrene, (j) plastic film, (k) yardwaste, and (l) paper.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Ordinance Code: Supplement 103).

Full Breakdown

Contra Costa County Ordinance Code Chapter 418-10, Recycling Requirements for Landfill Disposal, implements the state Integrated Waste Management Act locally by controlling what a landfill can accept. 602 bars a landfill operator, effective January 1, 1993, from accepting solid waste from any local agency's haulers unless that local agency is running a recycling program the board of supervisors has approved and certified. 4 down to the resin codes for plastic film. The rollout was staged: local agencies needed to divert at least seven of the twelve materials by January 1, 1993, at least ten by January 1, 1994, and all twelve by January 1, 1996.

606, with progress reports due from each local agency on the same milestone dates. 614 extends the same certification requirement to what the transfer station passes on to the landfill.

Violations & Fines

The enforcement point in Chapter 418-10 is the landfill gate, not a fine against residents. A landfill operator that keeps accepting waste from an uncertified local agency's haulers is out of compliance with Section 418-10.602. A local agency can seek a hardship exemption from the board under Section 418-10.802 by showing good cause, such as a material's recycling market being in severe decline, but exemptions are reviewed annually and are not automatic.

Frequently Asked Questions

What materials does Contra Costa's recycling program have to cover?
Twelve categories: aluminum cans, glass containers, newsprint, PET bottles, clear and colored HDPE bottles, steel and tin-plated cans, cardboard, polystyrene, plastic film, yard waste, and paper, all listed in Section 418-10.604 and defined individually in the chapter's definitions article.
Since when has full recycling been required?
Since January 1, 1996. Section 418-10.604 phased the requirement in: seven of the twelve materials by 1993, ten by 1994, and all twelve materials by 1996, with the board reviewing and recertifying each local agency's program at least every five years.
What happens if a hauler doesn't have a certified recycling program?
Under Section 418-10.602, a landfill operator may not accept solid waste from that hauler's local agency at all; the restriction is enforced at the point of disposal rather than through a fine against the hauler or residents.
Can a local agency get out of the recycling requirement?
Only with board approval. Section 418-10.802 lets the board of supervisors grant an exemption for good cause, such as a material's market being in severe decline, but any exemption is reviewed annually and can be denied renewal.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

California rules heatmap·Compare Contra Costa County to another location·View the California trash & recycling overview

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