Supporting biodiversity and water efficiency in Colombia’s coffee sector amid COP16 themes

In the heart of the coffee-growing region of Magdalena, the Netherlands and Colombia are combining forces to improve water efficiency and biodiversity conservation. This week, representatives from 196 countries including scientists, indigenous communities, business representatives and environment ministers are gathering in Cali, Colombia at the United Nations Convention on Biological Diversity (CBD) for the 16th meeting of the Conference of the Parties (COP). Agreements on progress and protection of biodiversity will be discussed extensively until 1 November.

Amid the many discussions, the collaborative partnership between the Netherlands and Colombia reflects a committed effort to promote biodiversity conservation, particularly in the coffee sector. One notable project, “Improving Water Efficiency in the Coffee Sector in the Magdalena Region” is funded by the Dutch government’s Partners for Water (PFW) programme and coordinated by AidEnvironment, a non-profit consultancy specialising in sustainable development and environmental conservation. AidEnvironment works in close partnership with the local Fundación Herencia Ambiental Caribe and Deltares, a Dutch research institute focused on water management, environmental sustainability and climate resilience.

The project

The “Improving Water Efficiency in the Coffee Sector in the Magdalena Region” project is implemented in Colombia’s key coffee-growing regions in the watersheds of the Aracataca. This is the birthplace of the famous writer and Nobel prize winner Gabriel García Márquez and is located in the Magdalena department by the Fundación rivers in the Sierra Nevada de Santa Marta (SNSM) mountain range. The region covers 18,000 hectares of coffee farms comprising of over 5,000 small-scale farmers. The project aims to find a balance between the economic importance of coffee production and the need to preserve ecosystems downstream, including the Ciénaga Grande de Santa Marta (CGSM), a UNESCO biosphere reserve. Since 1981, annual rainfall has steadily declined, resulting in water scarcity that poses a significant threat to both coffee farming and the biodiversity of the CGSM wetlands, which depend on reliable upstream water flows. The region’s traditional wet-processing methods pollute the water and place additional stress on both surface and groundwater resources.

Smallholder coffee farmers, who are vital to the local economy, are especially susceptible to these environmental shifts. Their limited financial resources further hinder their ability to adapt, making it more urgent to find affordable, locally tailored solutions. Keje Nagel, Coordinator of AidEnvironment, conducted extensive field research in various countries to understand the conditions and challenges that coffee farmers face, particularly around economic hardships and environmental degradation caused by coffee production. “It is essential,” he says in a video call from Colombia, “to create more circular agricultural systems that reduce environmental harm.”

The challenges

To tackle the challenges, Nagel explains that a two-phased approach will be implemented that actively engages coffee producers. In the first phase, “we will collaborate closely with local farmers to thoroughly understand their realities, challenges and the socio-cultural contexts. This will enable us to identify innovative water-saving and decontamination technologies specifically tailored to their needs and financial capabilities. Green filters for water purification will be explored, as well as other methods for reducing agrochemical use and innovative post-harvesting techniques for water-scarce conditions.

In the second phase, these technologies will be deployed on a pilot farm “to ensure they are both technically effective and culturally relevant”. Each farm will be treated as a micro-watershed, emphasising water retention, minimising runoff and enhancing soil health. By actively involving farmers in the implementation process and offering training in sustainable practices, the idea is to reduce dependencies on chemical inputs and optimise overall water management. A comprehensive monitoring and evaluation framework will track key indicators, including water availability, soil moisture and biodiversity health, allowing the long-term impact of these interventions to be assessed.

Reducing water consumption and nutrient runoff

Coffee is one of the key crops for soil conservation. However, coffee processing poses a risk of nutrient leakage, which can cause contamination when nutrient levels reach unnaturally high concentrations and end up in local rivers, contributing to water pollution. This occurs when nutrient-rich pulp and wastewater, used in washing the coffee cherries, are discharged into nearby rivers or streams. While this process may appear small, it leads to harmful nutrient peaks as piles of pulp partly end up in the water through rainfall. Nagel adds: “When these piles are left uncovered there is a significant risk of nutrient leakage which can cause serious damage to aquatic biodiversity. Fish and other species may struggle to survive in these altered environments.”

Maintaining nutrient flows and minimising external inputs such as fertilizers, is becoming increasingly expensive and unsustainable, especially in economically disadvantaged regions. “The ideal model for coffee farming,” says Nagel, “balances economic stability for farmers with environmentally sustainable practices, involving long-term contracts and regenerative agricultural techniques that support biodiversity and prevent resource depletion.”

Their findings show that the primary issue in coffee production, is exactly that: the economic disparity in the value chain, where producers receive a very small portion of the generated value (around 10%). This financial instability makes it difficult for farmers to get around and they often have other priorities than complying with environmental issues such as biodiversity loss, water pollution and soil degradation.

Pilot farms

Currently the National Coffee Federation (FNC) is implementing various technologies aimed at reducing water use and contamination. They are promoting two different filters that filter water wastewater with plants such as vetiver grass to remove excess nutrients from coffee processing. The other option is the use of Eco mills, innovative coffee processing machines that drastically reduce water usage. “The Eco mill processes coffee from cherry to parchment without impacting the overall production system”, Nagel adds.

However, these technologies are expensive, ranging from €2,500 and €5,000, making them inaccessible for many smallholder farmers. Moreover, green filter technology currently lacks a component that ensures the re-use of the collected nutrients. The project, therefore, is still in its development phase aiming to find scalable, affordable solutions tailored to different farm sizes and local contexts, with closed nutrient cycles. Farmers are encouraged to implement various agroforestry techniques before they become eligible for subsidies. By doing this, greater awareness among farmers can lead to their active contribution to sustainable practices.

Local institutions like CENICAFÉ, the research arm of the National Coffee Federation (Federación Nacional de Cafetéros de Colombia) is essential in ensuring not only the best technology, but also its adaptability and scalability within the region.

Rather than inventing new technologies these existing technologies built on previous research, are taken as departure points ensuring that any potential additions proposed can be easily adopted by the FNC, who are closely connected to the local context.

The road ahead

Over the next six months, the team will develop a technological design for a farm and work closely with local partners to ensure that the systems are effective and sustainable. This will be followed by a nine-month implementation phase. As with any project of this scale, however, patience and persistence are required. Cultural change in farming communities takes time and the team recognises that building trust and demonstrating success will be essential for long-term adaptation.

Looking for ways to get involved?

Are you currently working on water projects in Colombia or exploring how to do so? Or just curious about participating in the Partners for Water initiatives? Here are ways for you to get involved:

• Apply for our tenders focused on innovative solutions in delta countries like Colombia.
• Join our annual Colombia platform meeting or one of the other Partners for Water events.
• Follow us on LinkedIn and subscribe to our newsletter to stay updated on our tenders, activities, events and projects.
• Apply for the Partners for Water subsidy. Explore whether you are eligible.
• Get in touch with our Project Advisor for Colombia: Robert Proos