San Francisco Business Composting: Essential Guidelines for Food Waste

Tue Feb 24 2026

Understanding San Francisco’s Composting Mandate for Businesses

San Francisco leads the nation in aggressive waste diversion goals, and a cornerstone of this effort is its mandatory composting program. For businesses, this isn’t just an option; it’s a legal obligation under the city’s Mandatory Composting and Recycling Ordinance (Ordinance 199-09), first enacted in 2009. This regulation requires all commercial entities, including restaurants, cafes, hotels, grocery stores, corporate cafeterias, and even multi-family dwellings, to separate their food waste for composting. The goal is clear: divert valuable organic materials from landfills, reduce greenhouse gas emissions, and create nutrient-rich compost.

Failing to participate or consistently comply with this mandate can result in warnings and ultimately significant fines issued by SF Environment. Beyond legal consequences, non-compliance contributes to environmental harm and can undermine San Francisco’s broader sustainability objectives. Adhering to these guidelines demonstrates a commitment to corporate social responsibility and contributes directly to a greener city.

Accepted Materials & Common Contaminants for SF Businesses

Understanding what belongs in the compost bin versus the landfill or recycling is crucial for any successful commercial food waste composting program in San Francisco. Correct segregation prevents contamination, which can lead to rejected loads, additional fees, and a compromised composting process.

What to Compost:

All food scraps: This includes fruits, vegetables, meat, poultry, seafood (including bones and shells), dairy products, bread, pasta, rice, coffee grounds, and tea bags.
Soiled paper: Paper towels, napkins, pizza boxes, paper plates, and other paper products soiled with food (as long as they are not plastic-coated).
Plant trimmings: Small amounts of flowers, leaves, and other garden waste generated on-site.
Certified compostable products: Items labeled as BPI (Biodegradable Products Institute) certified compostable, such as cups, plates, and cutlery. Always look for the BPI logo.

What to Strictly Avoid (Common Contaminants):

Plastics: Any type of plastic, including conventional plastic bags, wrappers, plastic utensils, and plastic-lined containers.
Glass: Bottles, jars, and broken glass.
Metals: Aluminum foil, cans, and other metallic items.
Styrofoam: Cups, plates, and packing materials.
Liquids: Large quantities of liquids like soup or oil.
Diapers, pet waste, hazardous waste.
Gloves: Unless specifically BPI-certified compostable, most gloves (latex, nitrile, vinyl) are contaminants.

Contamination is the primary reason for rejected compost bins. When in doubt, it’s safer to place an item in the landfill bin than to contaminate the compost stream.

Setting Up Your Internal Food Waste Collection System

An efficient internal system makes compliance easy for your staff. Thoughtful planning for collection points and bin management is key.

Bin Selection and Placement:

Appropriate Bins: Choose durable, easily cleanable bins with tight-fitting lids to control odors and pests. Sizes should match the volume of waste generated in specific areas.
Strategic Placement: Place compost bins in high-food-waste-generation areas, such as kitchen prep stations, dishwashing areas, bus stations, and employee break rooms. Consider smaller countertop bins for easy access during food prep.
Approved Liners: If using liners, ensure they are BPI-certified compostable. Conventional plastic bags are not acceptable in San Francisco’s commercial composting program and will contaminate the stream.

Clear Signage Requirements:

Visual Cues: Utilize clear, color-coded signage (typically green for compost) that visually depicts accepted and prohibited items. SF Environment provides free, multilingual sorting signs that can be downloaded or ordered.
Prominent Display: Post signs clearly above or on every composting bin and waste station throughout your facility. Ensure they are visible to both staff and, if applicable, customers.

Selecting an Authorized Food Waste Hauler in San Francisco

To ensure your business’s food waste is collected and processed according to San Francisco’s regulations, you must partner with an authorized hauler. In San Francisco, Recology is the primary authorized waste management provider for commercial composting services.

Engaging with Recology:

Contact for Service: Reach out to Recology San Francisco to discuss your commercial composting needs. They can provide a waste assessment to help determine optimal service levels.
Service Frequency: Based on your estimated food waste volume, you’ll need to determine an appropriate pickup schedule. Options typically range from several times a week to daily, especially for high-volume establishments like large restaurants or grocery stores. Adequate frequency prevents odor, pest issues, and overflowing bins.
Container Sizes: Recology offers various container sizes, from 96-gallon carts to larger 3-yard bins, to accommodate different business needs. Ensure your chosen containers are accessible for collection and can be securely stored.
Cost Implications: Service costs are typically based on the volume of waste collected and the frequency of service. Discuss pricing structures directly with Recology.

Training Employees for Consistent Composting Compliance

Even the best-designed system will fail without proper employee engagement and ongoing training. Your staff are on the front lines of waste segregation.

Practical Training Strategies:

Comprehensive Onboarding: Integrate composting training into the onboarding process for all new hires, covering specific sorting rules for your business’s waste streams.
Regular Refreshers: Conduct periodic refresher training sessions, especially after any changes to regulations or your internal system. Use these opportunities to address common questions and reinforce best practices.
Visual Aids: Supplement training with easily digestible visual aids, such as posters, cheat sheets, and the official SF Environment sorting signs, placed strategically in relevant work areas.
Designated Champions: Appoint ‘compost champions’ within your team who can answer questions, provide guidance, and gently correct sorting mistakes.
Address Language Barriers: Ensure training materials and signage are available in the languages spoken by your diverse workforce.
Make it Easy: Design your waste stations so that correct sorting is intuitive. The easier it is for staff to do the right thing, the more consistent compliance will be.

Staying Compliant: Inspections, Resources, & Best Practices

Maintaining a compliant commercial food waste composting program is an ongoing effort. San Francisco Environment conducts inspections to ensure businesses are meeting their obligations.

Inspections and Enforcement:

SF Environment Inspections: Expect periodic inspections from SF Environment. Inspectors will check for proper waste segregation, signage, and adherence to the composting mandate. Initial non-compliance typically results in warnings, followed by fines if issues persist.

Local Resources for Assistance:

SF Environment: Their website is a comprehensive resource for the latest mandates, free sorting signs, and educational materials. They also offer waste reduction assistance.
Recology San Francisco: Your hauler is a key partner. They can provide guidance on container sizing, collection schedules, and accepted materials.
Free Waste Assessments: Both SF Environment and Recology may offer free waste assessments to help businesses optimize their recycling and composting programs.

Best Practices for Ongoing Optimization:

Regular Audits: Conduct internal audits of your waste bins to identify common contaminants and areas where training might need reinforcement.
Feedback Loops: Encourage staff to provide feedback on the system. Their insights can reveal operational bottlenecks or confusion points.
Bin Placement & Accessibility: Periodically review the placement of your bins to ensure they remain convenient and accessible for both staff and collection.
Sanitation: Regularly clean all internal and external composting bins to prevent odors and pest attraction.

San Francisco Business Composting Decision Checklist

Have you identified all sources and estimated daily volumes of food waste within your business operations?
Are clearly marked, appropriate internal collection bins with approved compostable liners (if used) distributed where food waste is generated?
Have you contacted an SF-authorized hauler (e.g., Recology) to establish collection services and determined optimal pickup frequency for your estimated volume?
Is your staff comprehensively trained on what can and cannot be composted, including San Francisco’s specific ‘accepted materials’ list?
Are clear, multilingual sorting signs (obtainable from SF Environment) prominently posted at all waste stations throughout your facility?
Have you designated a secure, accessible, and clean outdoor area for your commercial composting bins to prevent pests and ensure easy hauler access?

Common Mistakes to Avoid in Commercial Food Waste Composting

Contaminating the compost stream with non-compostable items (e.g., plastic utensils, conventional plastic bags, latex gloves), leading to rejected pickups or fines.
Insufficient or unclear employee training, resulting in inconsistent sorting habits and high contamination rates that jeopardize program effectiveness.
Using non-compliant or unlined internal collection bins, causing odors, pest issues, and operational difficulties for both staff and haulers.
Delaying implementation or ignoring the mandate until a warning or fine from SF Environment is issued, incurring unnecessary penalties.
Underestimating food waste volume, leading to overflowing bins, missed pickups, and associated operational or health issues.
Failing to regularly clean internal and external composting bins, which attracts pests and creates unsanitary conditions.

How to Verify in San Francisco Today

To ensure your business is fully compliant with San Francisco’s commercial food waste composting requirements, take these practical steps:

Review Official Guidelines: Visit the SF Environment website (sfenvironment.org) and navigate to their ‘Reduce, Reuse, Recycle’ section for businesses. Confirm the latest version of the Mandatory Composting and Recycling Ordinance and detailed guidelines on accepted materials.
Contact Recology San Francisco: Reach out directly to Recology San Francisco (recology.com/recology-san-francisco/for-businesses/) to verify service availability in your specific location, discuss container options, and get a precise quote for commercial food waste collection.
Check for BPI Certification: When sourcing compostable bags, containers, or utensils, visually inspect products for the official BPI (Biodegradable Products Institute) certification logo. This is the standard for accepted compostable products in San Francisco.

Frequently Asked Questions About Commercial Food Waste Composting in San Francisco

Q: Is commercial food waste composting mandatory for all businesses in San Francisco?

A: Yes, San Francisco’s Mandatory Composting and Recycling Ordinance applies to all businesses, institutions, and multi-family dwellings, regardless of size. If your business generates food waste, you are required to separate it for composting.

Q: What happens if my business doesn’t comply with the composting mandate?

A: SF Environment conducts inspections, and non-compliance can result in warnings, followed by escalating fines. Beyond penalties, non-compliance contributes to landfill waste and contradicts the city’s environmental goals.

Q: Where can I get free composting signs for my San Francisco business?

A: SF Environment provides free, multilingual sorting signs that clearly illustrate what items belong in compost, recycling, and landfill bins. These can be downloaded from their website or requested directly through their business assistance programs.