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The meat production chain is often associated with high water consumption, both in animal management and in industrial processes. However, growing pressure for water efficiency and environmental responsibility has led the sector to review practices and adopt technologies that help reduce its water footprint and improve resource management.
According to the Water Footprint Network, global animal production accounts for a significant share of world water use — about 15,400,000 liters per kilogram of beef. Of that total, approximately 94% corresponds to so-called green water, that is, rainwater stored in the soil and absorbed by plants. In livestock farming, this essentially refers to the water used for growing pastures and the grains destined for animal feed when the farm has integrated systems such as crop and livestock. This water is part of the natural hydrological cycle and would return to the atmosphere through evapotranspiration regardless of the presence of animals.
The remaining 4% refers to blue water, which corresponds to water drawn directly from rivers, lakes, reservoirs or aquifers for animal drinking, cleaning facilities, irrigation (where present) and industrial processing. Another 3% relates to grey water, an indicator representing the theoretical volume of water required to dilute pollutants generated in production until acceptable quality standards are met.
Moreover, the sector also has great potential to mitigate this issue—especially through technological innovation, productivity improvements and more efficient water resource management. The concept of producing “more with less” has been integrated into production and industrial processes as a strategic pillar of efficiency, aligning economic competitiveness with contemporary socio-environmental demands, since in increasingly demanding markets the adoption of responsible and sustainable practices along the value chain is crucial.
Environmental technologies in use
One of the most transformative fronts in the livestock sector is the state-of-the-art Effluent Treatment Plants (ETPs). Previously, ETPs only treated water to return it to rivers within legal parameters; today, the concept has evolved toward effluent reuse.
In a study published in the Brazilian Journal of Environmental Sciences, the technical feasibility of reusing effluents from beef slaughterhouses was analyzed. The researchers specifically highlighted the potential for fertigation (using wastewater to irrigate crops, taking advantage of the nutrients it contains). This reduces the use of chemical fertilizers and allows water used in the industrial process to return to the field to produce the forage that will feed the cattle, closing the loop.
In addition, major industry players have invested millions in ultrafiltration systems (which retain bacteria, viruses and suspended solids that primary treatments could not filter) and reverse osmosis (which forces water through membranes under high pressure so dense that even mineral salts and heavy metals are retained).
Rainwater harvesting systems are also becoming standard in new slaughterhouse plants. With roofs covering hectares of built area, the collection potential is high. The Embrapa Pecuária Sudeste page offers technical guidelines showing how integration of crop and livestock (ILP) also helps retain soil water, reducing the need for intensive artificial watering.
All these technologies are part of the circular economy concept within livestock farming: by using reverse osmosis to feed a boiler with water that would otherwise be discarded, the slaughterhouse stops withdrawing clean water from nature for a process that can be supplied by the factory’s own liquid “waste.”
Read also: Bovine upcycling: cattle turn inedible resources into high-value protein
Sustainability turns cost into longevity
One of the major myths debunked by new industrial management is that sustainability is an “extra cost” that raises the final price. On the contrary: water efficiency is an investment in longevity. Among the main benefits of modern sustainability practices are:
- Cost reduction: less extraction of raw water and reduced effluent discharge mean lower sanitation fees and lower expenses for pumping and energy;
- Access to capital: the global financial market prioritizes companies with good ESG (Environmental, Social, and Governance) practices. Green bonds (Green Bonds) offer more attractive interest rates to slaughterhouses that can demonstrate water consumption reduction targets;
- Brand appreciation: European and Asian consumers demand traceability and environmental responsibility. Transparent sustainability reports, such as those audited by the Global Reporting Initiative (GRI), are passports to premium markets.
The journey toward livestock farming with “zero thirst” for waste is still in progress, but results are already visible. The digitization of the field, with sensors that monitor consumption in real time and artificial intelligence that detects minute leaks, is part of the next stage to be adopted by the sector. In this way, the understanding that water is a strategic asset gains scale.
When the resource is protected and used consciously, it not only shields the ecosystem but also secures its own future against potential climate uncertainties—issues frequently raised by scientists around the globe.
Sources of reference:
Product Gallery – Water Footprint Network
https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/download/1624/900/9028
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