Every new year begins with a connection – the link between purpose and possibility. As we step into 2026, we are reminded that nothing in nature stands alone. Every material, every decision, every action forms part of a larger system. Waste is no exception.

For decades, waste was treated as an endpoint: something to discard, bury, or remove from sight. But modern sustainability asks a different question: what system does this waste belong to, and how can it support something greater?

This is the foundation of systems thinking in waste management – understanding that waste touches water, water touches soil, soil shapes biodiversity, and biodiversity sustains communities and economies.

The Power of Systems Thinking in Waste

Globally, the way we manage waste is shaping our future. The World Bank’s What a Waste 2.0 analysis shows that the world already generates over 2 billion tonnes of municipal solid waste each year, with volumes projected to increase by around 70% by 2050 without urgent action.

When this waste is mismanaged – dumped, burned, or left untreated – the impacts cascade through connected systems:

Water quality and ecosystems Poorly managed waste can contaminate rivers, lakes, and coastal waters, affecting ecosystems, fisheries, and drinking water sources.
Public health and wellbeing Uncollected or poorly handled waste creates breeding grounds for disease vectors, contributes to air pollution, and increases the risk of waterborne diseases. The World Health Organization notes that poor waste management is a significant driver of environmental pollution and related health risks.
Climate and resilience Landfills and unmanaged organic waste release methane – a greenhouse gas with a global warming potential far greater than carbon dioxide – adding pressure to a climate system already under strain.

In other words: waste is never just “waste”. It is a node in a complex web of environmental, social, and economic outcomes. Systems thinking helps us see those links clearly – and design better solutions.

Integrated Waste Management: Where Change Begins

Every new year gives us a chance to ask: Are we still treating waste in isolation, or are we managing it as part of a larger system of recovery and value?

Integrated Waste Management is where that shift becomes real. Instead of viewing each waste stream separately, it aligns collection, treatment, recovery, energy generation, and environmental protection into one coherent approach.

In practice, that means:

Every material has a destination – whether recovery, recycling, energy generation, or safe disposal.
Processes are designed to support one another, not compete: what cannot be recycled may become fuel; what cannot be neutralised on-site is treated through specialised facilities.
Partnerships are built for circularity, linking one industry’s by-products to another’s inputs.
Environmental and social outcomes are measured as part of system performance, not as external “nice-to-haves”.

This is not just good practice – it is increasingly recognised as essential for climate stability and planetary health. The UN’s latest Global Environment and Global Waste Management outlooks emphasise that tackling climate change, pollution, and biodiversity loss requires joined-up, system-wide solutions, and that investing in better waste management reduces environmental damage, health risks, and long-term costs.

When we talks about Integrated Waste Management, it is not just describing a set of services. It is describing the way we connect materials, facilities, and communities into a greater system of recovery.

Why Waste Is Never Isolated

A single decision in waste management can ripple far beyond the bin, skip, or site where it starts:

A bottle discarded inland can travel hundreds of kilometres, contributing to ocean plastic pollution.
A landfill operated without proper controls can affect air quality, groundwater, and nearby communities for years.
Untreated effluent can compromise river systems, irrigation water, and eventually food production.

But the reverse is also true: well-designed waste systems create positive chains of impact.

Interwaste’s integrated approach is built on strengthening these positive links:

Circular water management through Effluent Treatment Plants (ETPs) helps ensure that contaminated leachate is treated safely, protecting downstream ecosystems and communities and supporting national water security efforts.
RDF and other waste-derived fuels reduce reliance on fossil fuels and support decarbonisation by turning non-recyclable waste into a lower-carbon energy source.
Bioremediation and land remediation support soil health, restoring damaged sites so that land can once again support biodiversity, agriculture, or safe development.
Landfill gas-to-energy systems capture methane and convert it into useful energy, limiting climate impact and improving overall resource efficiency.
Recycling-linked social programmes, such as Give2Green, demonstrate how recovered materials can translate into dignity, mobility, and opportunity — proving that resource recovery can support both environmental and social value.

Each of these examples shows the same truth: waste is connected to water, soil, climate, biodiversity, and communities. When we treat it as part of a system, we unlock solutions that reach far beyond a single facility or site.

Building South Africa’s Zero Waste Future

October marks a pivotal moment in our journey through A Time of Waste. After imagining what a world without landfills could look like in September, we now begin planting the seeds that will turn that vision into reality. Planting the Seeds of Tomorrow isn’t just about ideas; it’s about cultivating systems, technologies, and collaborations today so that zero waste to landfill becomes more than aspiration – it becomes our foundation for the future.

Why Zero Waste Matters Now

South Africa generates over 122 million tonnes of waste annually, yet just about 10% of that is recycled. Our landfill space is under growing pressure, and the environmental, health, and economic costs of waste disposal are mounting. At the same time, the National Waste Management Strategy 2020 and other policy frameworks make it clear: transitioning toward circular economy models is essential, not optional. We need to rethink production, consumption, and recovery from the very first stage – and protect our planet and communities along with that.

Real Growing Points: Where Change Is Already Sprouting

South Africa isn’t just talking about the circular economy – it’s already putting it into practice. The Warwick Zero Waste pilot in Durban is a strong example. By March 2024, the initiative had diverted more than 72 tonnes of organic waste from landfill. Each week, approximately 1.5 tonnes of food waste from the Early Morning Market, collected across two drop-off points, is combined with around 1 tonne of garden waste. This material is then processed through local composting, producing nutrient-rich compost while reducing transport needs and cutting emissions.

Another strong example comes from PETCO, which continues to lead in driving plastics circularity in South Africa. According to the PETCO 2024 Annual Report, the organisation facilitated the collection and recycling of 147,959 tonnes of post-consumer PET in 2023. This achievement represents a 62% recycling rate for PET beverage bottles placed on the market, equating to more than 6.6 billion bottles diverted from landfill in a single year. Beyond reducing waste, this effort also supported thousands of income opportunities across the recycling value chain, demonstrating how extended producer responsibility can deliver both environmental and social impact at scale.

Cultivating Circular Roots

At Interwaste, we believe in putting down deep roots. Our facilities – ranging from engineered landfills, composting and recycling centres, the ETP, and the Refuse Derived Fuels Facility, are already part of the groundwork for a future where waste is a resource. We are exploring new technologies to improve processing and treatment, from mechanical pre-treatment methods to alternative fuel recovery.

We are building closed-loop systems: helping clients more effectively manage waste at source, recover materials, and reduce what ends up in landfill. Each facility, each pilot, each partner adds a new seed. With investment, policy support, and scale, those seeds will grow.

From Seeds to Systems

Planting the seeds means more than starting these projects – it means tending them, scaling them, integrating them. In practical terms, this means supporting policies that encourage extended producer responsibility (EPR), creating incentives for composting and recycling at municipal level, investing in infrastructure for material recovery, and nurturing public behaviour change.

The “seedlings” we see today – composting projects, plastic recycling growth, packaging design shifts – show what’s possible. Systems change means moving from isolated pilots to widespread, coordinated action across sectors and geographies. Only then can zero waste to landfill shift from being a vision to being standard practice.

A Future We Grow Together

If we want waste to stop defining our world, then today is the day we sow differently. The seeds of a zero-waste future are being planted across South Africa – from compost heaps in Durban, to PET bottles being reused, to packaging being redesigned. It is through this growing pattern of change, rooted in action, innovation, and collaboration, that we begin to build the future we’ve imagined.

Let us nurture these seeds: invest in circular design, support projects that recover value, partner across the waste value chain, and demand better systems. Because the zero-waste future is not something that happens by chance – it happens by choice. When we choose to grow differently, our planet, our people, and our prospects flourish.

Zero Waste – Interwaste Holdings Ltd

Interconnected Beginnings: Why Waste Is Never Isolated