Githurai market generates a volume and concentration of organic waste that a typical residential street simply doesn't — vegetable trimmings, spoiled produce, and food-stall scraps, all in one place, every single trading day. Working with market vendors to manage that waste properly has become one of our more distinct programme threads, different in scale and rhythm from residential collection.
Why market waste needed a different approach
Residential organic waste arrives in relatively small, predictable quantities per household on a fixed weekly schedule. Market waste is a different problem entirely: high volume, generated daily rather than weekly, concentrated in a small physical area, and produced by dozens of individual vendors rather than a single household unit. Applying our standard residential collection model directly to Githurai market simply didn't fit the actual pattern of how waste was being generated there.
How the vendor arrangement works
Rather than a single collection agreement covering the whole market, we worked with the market association to establish a shared organic waste collection point within the market itself, where vendors deposit sorted organic waste — vegetable trimmings, spoiled produce, food scraps — separately from general market waste. Collection happens more frequently than our residential weekly schedule, reflecting the higher volume and the practical need to avoid organic waste sitting and decomposing in a busy market environment for days at a time.
What vendors get in return
Beyond simply removing waste that would otherwise accumulate around stalls, vendors benefit from a cleaner, more pleasant trading environment, reduced pest activity that organic waste buildup tends to attract, and, for vendors handling higher volumes, the option to contribute to a small collective fee that's considerably more cost-effective than any individual arrangement would be. The market association coordinates this collectively rather than us billing each vendor separately, which has proven far simpler to manage for everyone involved.
Where the organic waste goes
Market organic waste feeds directly into our composting programme, and given the volume involved, Githurai market has become one of our most significant single sources of compostable material — a genuinely useful input rather than simply a waste stream to dispose of. It's a clear example of how our composting and market collection programmes reinforce each other: market vendors get reliable waste removal, and our composting output benefits from a steady, concentrated organic waste source.
Challenges specific to market collection
Market collection has come with its own operational lessons distinct from residential routes. Volume can vary significantly by season and by market day, requiring more flexible collector scheduling than our fixed residential rounds. Coordinating with dozens of individual vendors, even through a market association, requires more active relationship management than a single household agreement. And the sheer freshness and volume of organic waste in a market setting means collection frequency matters more than it does residentially — a missed market collection day has a more immediate, visible impact than a missed residential one.
What this model could mean for other markets
The Githurai market arrangement has worked well enough that we're looking at whether a similar model could extend to other trading centres within our service area, particularly smaller markets that generate meaningful organic waste volume without the scale to justify a fully separate collection system on their own. As with every expansion decision we make, this depends on demonstrated interest from vendors and market leadership, not a plan imposed from outside.
How the market association coordinates payment and participation
Rather than us collecting individual fees from dozens of vendors directly, the market association handles collective coordination, gathering contributions from participating vendors and managing communication about collection timing and any schedule changes. This has proven far more efficient administratively than an alternative where we'd need to track and bill each stall individually, and it mirrors an approach we've used successfully elsewhere — our Sunton estate collection point works on a similar shared-coordination model through the estate committee rather than door-to-door individual billing.
What vendors say has changed since the arrangement started
Vendors closest to the shared collection point describe a noticeably different daily experience — less lingering smell from accumulated organic waste by midday, fewer flies around stalls handling fresh produce, and less time spent individually figuring out what to do with unsold or spoiled stock at the end of a trading day. None of these are dramatic transformations on their own, but together they add up to a market environment vendors describe as simply easier to work in day to day, which matters as much to sustained participation as any formal metric we might track.
What a slow trading day means for collection scheduling
Market waste volume isn't constant; it dips on slower trading days and spikes around particular market events or seasons when produce volume through the market is higher. We've built some flexibility into the Githurai collection schedule to accommodate this, checking in with the market association periodically about whether frequency needs adjusting, rather than locking in a fixed schedule that might not track well against genuinely variable market activity.
What this arrangement has meant for our composting output specifically
Given the volume involved, Githurai market has meaningfully increased the total organic material feeding into our composting programme, which in turn supports the household composting guidance we share more broadly — a larger-scale composting operation gives us more direct, practical experience to draw on when advising individual households on their own smaller-scale efforts.
Frequently asked questions
How is market waste collection different from residential collection?
Market collection happens more frequently, reflecting higher daily volume, and is coordinated through a shared collection point and the market association rather than individual household agreements.
Can individual vendors join without the whole market participating?
The current model works most efficiently as a market-wide arrangement coordinated through the association, though we're open to discussing options for markets where full participation isn't immediately possible.
Could this model be extended to other markets in Kasarani?
Potentially, based on demonstrated interest from vendors and market leadership. Reach out if you're part of a market association interested in exploring this.
Market associations interested in a similar arrangement can start the conversation through our Get Involved page.