May 8, 2025
Water footprint and efficiency: how companies can manage water sustainably
In a context of increasing resource scarcity and higher regulatory pressure, water management has become a priority for any corporate sustainability strategy. Water, often underestimated, is one of the most critical resources in the ecological transition. Understanding and reducing the water footprint not only benefits the environment, but also improves operational efficiency and corporate reputation.
What is the water footprint and why should it matter to your company?
The water footprint is an indicator that measures the total volume of freshwater used to produce goods and services. It includes three components: blue water (surface or groundwater), green water (rainwater), and grey water (polluted water). According to the Water Footprint Network, this indicator helps identify critical points of consumption or pollution in the value chain.
In sectors such as food, fashion, and the chemical industry, where water use is intensive, knowing and managing this footprint is key to reducing operational risks and anticipating environmental regulations.
How to calculate the corporate water footprint
Calculating the water footprint requires:
- Mapping production processes: Identifying activities with direct or indirect water use.
- Collecting precise data: Consumption, origin, discharges.
- Applying standardized methodologies: Such as those from ISO 14046 or the Water Footprint Assessment Manual.
There are tools like the Water Footprint Network’s water footprint calculator that allow for initial estimations.
Measures for sustainable water use
Once the water footprint is identified, companies can implement various strategies for sustainable water management:
- Reuse of grey or rainwater
- Low-water consumption technologies (drip irrigation, dry cleaning, closed systems)
- On-site wastewater treatment
- Smart sensors to detect leaks or excessive consumption
These actions can be part of integrated energy efficiency projects that address both water and energy together, as we explain in our article on innovations transforming sustainability.
Regulations and trends driving change
European legislation is increasing demands for transparency and action regarding water use. Regulations like the Water Framework Directive and the European Green Deal are pressuring companies to adopt more rigorous water control systems. Additionally, the UN’s Sustainable Development Goals, particularly SDG 6 (clean water and sanitation), place sustainable water use as a global priority.
In summary
Reducing water impact is no longer an option; it’s a necessity for any organization aiming to be resilient and responsible. At Wegsco, we help companies calculate their water footprint, design improvement plans, and implement climate action measures through efficiency.
