Phoenix Composting Efforts Faced Hurdles
The city maintains a municipal composting facility that underutilizes its annual production of organic soil material.
Updated on Oct. 4, 2026 in Organic Food
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Phoenix manages a municipal composting facility that produces 55,000 tons of organic material annually but currently underutilizes its available resources. Despite this production, the city holds a contract for only 500 cubic yards of compost each year.
Why it matters
The program functions primarily as a landfill diversion strategy to mitigate environmental impacts like methane leaching. Proper composting also provides essential benefits for the region, including erosion management, dust prevention, and flood control.
The municipal composting facility at Lower Buckeye Road and 27th Avenue produces 55,000 tons of material annually. Meanwhile, private retailers like the Arizona Worm Farm sell similar compost to the public for $35 per cubic yard.
The players
Margaret Wilson
Margaret Wilson serves as the general manager for Denali and oversees municipal composting operations in Phoenix.
Arizona Worm Farm
The Arizona Worm Farm is a private agricultural business in the region that sells compost to the public.
The details
The city facility turns food scraps into soil through aeration and large-scale turnover, mixing nitrogen-rich waste with carbon-based materials like cardboard or newspaper to suppress odors. The 2025 Food Waste Collection Pilot Program successfully diverted 441 tons of food from landfills across 3,000 participating households.
Timeline
The Green Organics Curbside Collection program launched in 2014.
The composting facility at Lower Buckeye Road opened in 2017.
An investigation identified failures in mitigating methane leaching in 2024.
The city published a summary of the food waste pilot program in June 2025.
Culture Shift
Urban composting initiatives reflect a broader societal transition toward sustainable waste management and circular economies. This development follows a pattern established by the 2025 Food Waste Collection Pilot Program.
Residents currently pay a monthly fee of $10.85 for the city's curbside organic collection service. Participation in such programs helps households reduce their individual contribution to landfill waste.
The takeaway
Composting represents a practical method for cities to manage waste while improving soil health and mitigating local environmental hazards. Residents should continue to leverage municipal collection services to maximize the impact of landfill diversion efforts.
Further reading
Learn more about local waste management efforts on the Organic Food page.
More information
To participate in local environmental initiatives, you can submit your details via the climate leader nomination form.
Source note: This article includes information reported by AZ Central.
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