99% Invisible – Service Request #3: Why Is There So Much Litter in San Francisco?

Host: Roman Mars
Date: March 31, 2026
Main Guests: Delaney Hall (Producer/Co-Host), Rachel Gordon (Director of Policy and Communications, SF Public Works)

Overview

This episode delves into the persistent problem of litter in San Francisco, focusing on the surprisingly complex story behind public trash cans: where they're placed, who decides on their design, how they're maintained, and why—despite the city’s efforts—litter remains a visible issue. Through interviews with city officials and a look at design experiments, the episode reveals the intersection of urban infrastructure, public behavior, politics, and design.

Key Discussion Points and Insights

Roman’s Trash Can Quest

• Setting the Scene:

  • Roman Mars describes his habitual visit to Tony's Slice House in North Beach, finding himself looking for a trash can and noticing their scarcity.

    "There's no trash can where I'm standing right now...I kind of expect a trash can every major intersection." (01:39 – Roman Mars)

• The Big Questions:

  • Who determines trash can placement? Is there a system or formula? Why are San Francisco’s streets so dirty? (01:58 – Roman Mars)

How Trash Cans Are Placed in San Francisco

• Process and Prioritization:

  • Rachel Gordon, from SF Public Works, explains they manage about 3,000 trash cans:

    "We have about 3,000 locations in San Francisco with garbage cans. It's actually one of the most garbage cans for a city our size today." (04:01 – Rachel Gordon)

  • Placement prioritizes busy areas: transit stops, commercial corridors, schools, hospitals, with fewer in residential areas unless prompted by requests (e.g., for dog walkers). (04:32 – Rachel Gordon)
  • Public feedback through 311 and Board of Supervisors also influences placement. (04:55 – Delaney Hall)

• Constant Adjustments:

  • Cans can be installed, removed, and reinstalled in response to complaints or neighborhood concerns—a dynamic, sometimes contentious process. (05:10 – Rachel Gordon; 05:34 – Delaney Hall)

The Data-Driven Mission District Pilot (2017-Present)

• The Walt Disney “30 Step” Rule Debunked (and Reinforced):

  • Inspired by the notion that more cans mean less litter (06:59 – Delaney Hall), the city ran a pilot in the Mission District: placing cans on every intersection and mid-block.
  • Unexpected Result:

    "...it really did not make that much of a difference. At the end of the day, in some spots, there was less litter. In some spots, the litter was just the same. Some spots it was more." (07:51 – Rachel Gordon)

  • People would often drop trash near a can anyway, ignoring it even when close by, raising questions about personal responsibility and underlying behavior. (08:18 – Delaney Hall)

• Exploring Behavioral Factors:

  "It's like maid service at a hotel...You throw down your candy wrapper on the street of San Francisco, somebody's gonna come by and eventually pick it up." (08:49 – Rachel Gordon)

Trash Cultures & San Francisco’s Anomalies

• Comparison to Other Cities and Countries:

  • In Japan, almost no public trash cans—but little trash, thanks to a culture of carrying one's waste home (10:11 – Delaney Hall).
  • In other U.S. cities (NYC, Philly, Chicago), more cans often equals less litter, yet SF's problem persists. (11:14 – Rachel Gordon)

• Contributing Factors Identified:

  • High unhoused population, leading to rummaging for recyclables and spillover. (11:33 – Delaney Hall)
  • Illegal dumping: "About 18,000 tons of trash get dumped on San Francisco's streets every year." (11:56 – Delaney Hall)
  • Overflowing and poorly serviced bins exacerbating the issue (Recology complaints). (12:44 – Delaney Hall)
  • Environmental cues: litter attracts more litter—a self-reinforcing cycle. (12:44 – Delaney Hall)

Rethinking the Trash Can Itself

• Old vs. New Design:

  • The city’s “Renaissance cans” (from 1993) were worn and easily vandalized. (13:56 – Delaney Hall; 14:18 – Rachel Gordon)
  • Problems with vandalism, graffiti, break-ins for recyclables, and even tipping over 600-pound cement cans. (14:18 – Rachel Gordon)

• Design Competition and Prototyping:

  • SF launched a competition for a new can, prototyping three custom designs (Salt and Pepper, Slim Silhouette, Soft Square) and testing them alongside three “off the shelf” models in 52 locations. (17:53 – Delaney Hall)
  • Public input via QR codes, with feedback from residents, sanitation workers, and maintenance staff. (19:30 – Delaney Hall)

• Notable Quote — Civic Engagement:

  "One thing that makes our city endearing is that the public will weigh in on just about anything." (19:36 – Rachel Gordon)

• Prototypes’ Controversial Cost:

  • $20,000 per prototype can—sparked public and media backlash.

    "The prototype costs $20,000 per can. As one supervisor puts it, it's a Fox News headline waiting to happen." (20:10 – Roman Mars)

  • Final models (mass manufactured) will cost around $1,375 each—the same or less than off-the-shelf models. (20:50 – Rachel Gordon)

• The Slow Grind of Urban Procurement:

  • The process, beginning in 2017, will culminate nine years later (summer 2026) when new cans finally appear on the streets. Delays blamed on contracting, competitive bidding, and especially Covid. (22:20 – Rachel Gordon; 22:56 – Delaney Hall)

• Public’s Role in Final Choice:

  • The chosen model is the “Slim Silhouette”: narrow, with stainless steel bars, easily serviced and cleaned, and preferred by both workers and residents (after some tweaks for usability). (23:22 – Rachel Gordon)

Trash, Politics, and Psychology

• The Political Charge of Garbage:

  • Trash and cleanliness are politically loaded in SF, a famously liberal city often targeted by national media. (24:24 – Delaney Hall; 24:33 – Rachel Gordon)

    "...the trash in San Francisco, it's on par with a lot of other cities. The trash cans, though, like, there's a constituency for every trash can in San Francisco." (24:33 – Rachel Gordon)

• Symbolism of Urban Services:

  • Potholes, snow removal, and trash collection are seen as indicators of general governmental competence—hence “pothole politics.” (25:48 – Rachel Gordon)

• Behavioral Bottom Line:

  • Street cleanliness cannot be solved by design alone. The problem is ultimately behavioral:

    "It's like, ultimately you can bring people to trash cans, but you cannot make them throw away their trash." (26:44 – Delaney Hall) "If people did the right thing, right, you have garbage. Where are you going to put it? That it's not going to affect the common areas and really the public good." (26:59 – Rachel Gordon)

Conclusion and Memorable Moments

• Key Takeaway:

  • San Francisco’s litter problem is not just a matter of how many trash cans exist or how they are designed—the issue is as much about public behavior, illegal dumping, and structural challenges as it is about aesthetics or number.
  • The process of updating something as seemingly simple as a trash can is long, expensive, and highly scrutinized.
  • Civic engagement in San Francisco is high—even about (and especially about) trash cans.

• Memorable Quotes:

  "You can design the perfect trash can and still have dirty streets." (27:24 – Delaney Hall)
  "...if you're ever wondering why it takes San Francisco a decade and half a million dollars to choose a trash can, now you know. Consider this service request resolved." (28:21 – Delaney Hall)

Timeline of Notable Segments

| Timestamp | Discussion Topic or Quote | |------------|---------------------------------------------------------------------| | 01:39 | Roman Mars wonders about trash can placement | | 04:01-04:32| Rachel Gordon on how SF Public Works places and maintains cans | | 06:31 | Mission District trash can density pilot introduced | | 07:51 | No clear improvement from more cans; behavioral insights | | 08:49 | Rachel Gordon on “maid service” mentality and public behavior | | 10:11 | Cultural comparison: Japan and trash customs | | 11:33 | Factors: Homelessness, rummaging, illegal dumping | | 12:44 | Overflowing bins and the role of cues in public littering | | 13:56-14:18| Vandalism issues with old trash cans | | 17:53 | Trash can design competition and pilot testing | | 20:10 | $20,000 prototype controversy | | 22:26 | Duration of the process explained | | 23:22 | Slim Silhouette model selected and tweaks described | | 24:33 | Political context and charged debates over trash | | 25:48 | “Pothole politics” and symbolism of services | | 26:44-26:59| Ultimately, the challenge is behavioral, not just functional | | 27:24 | Wrap-up: perfect design vs. persistent behavioral issues | | 28:21 | What department controls the cans; process recap |

Final Words

San Francisco’s trash can story is a microcosm for how public infrastructure collides with human nature, politics, and design. The forthcoming citywide rollout of new cans—years in the making—shows how even the smallest fixtures can become emblematic of urban complexity, democracy, and people’s hopes for a cleaner environment. As Delaney Hall sums up:

"You can design the perfect trash can and still have dirty streets." (27:24)