Efficient water management in industry and energy.
In a context of growing pressure on natural resources, water is emerging as one of the most critical assets for economic development and sustainability. Both industry and the energy sector depend heavily on water for their essential processes: cooling, cleaning, transformation of raw materials, energy production or emissions control. This makes efficient water management a strategic priority, not only from an environmental point of view but also from a competitive and economic one. https://www.unwater.org
1. Water in industry and energy: a systemic dependence
In industry, water is present in practically every stage of production. Sectors such as chemicals, food and beverages, paper and pharmaceuticals have a direct, constant dependence on the resource. In the energy sector, especially in thermal and nuclear power stations and many renewables such as biomass, water is essential for cooling and for ensuring the efficiency of the systems.
This dependence is amplified by two factors:
- The increase in global demand for industrial water, which is expected to grow in the coming years in parallel with economic activity.
- Growing water scarcity and variability resulting from climate change, which increases competition between agricultural, urban and industrial uses.
Against this background, many companies are beginning to consider water not only as an operational supply, but as a critical risk element that has to be managed strategically.
2. Water as a strategic resource: risks and opportunities
Water management has ceased to be a merely operational matter and has become a corporate governance issue. Water scarcity, the rising costs of treatment and of the energy associated with its use, together with regulatory and social demands, oblige companies to:
- Minimise their water footprint.
- Guarantee security of supply.
- Reduce reputational and regulatory compliance risks.
- Improve their resilience to extreme climate events.
On the other hand, companies that invest in efficient water management technologies and strategies obtain clear benefits: reduced operating costs, longer asset service life, an improved corporate image and access to new opportunities in markets where sustainability is a criterion of value.
3. Key strategies for efficient water management
The transition towards more sustainable water management can be approached along three main lines: internal efficiency, reuse and digitalisation.
A. Efficiency and process optimisation
The quickest and most profitable opportunities are often internal improvements:
- Optimisation of cooling systems, such as the use of closed circuits that reduce consumption and evaporation.
- Recovery of process water, especially in cleaning and product separation.
- Deployment of low-consumption technologies, such as high-efficiency industrial washers or dry processes where possible.
- Predictive maintenance, which prevents leaks and undetected losses.
These measures often have a fast return on investment and make it possible to reduce total consumption significantly.
B. Water reuse and circular economy
Reuse is increasingly a key element in companies’ water resilience. Through advanced treatment technologies —such as filtration, ultrafiltration, reverse osmosis or biological treatments— it is possible to turn wastewater into recoverable resources.
Some emerging practices include:
- Reuse of treated water for cooling or equipment cleaning.
- Recovery of by-products (sludge, nutrients, energy) from wastewater treatment.
- Integration of on-site regeneration plants that minimise dependence on external sources.
Reuse not only provides water security, it also releases pressure on local resources and can significantly reduce operating costs.
C. Digitalisation and intelligent control of the water cycle
Digital technologies are transforming industrial water management. Solutions based on sensors, IoT, SCADA systems or advanced analytics platforms make it possible to:
- Monitor consumption in real time.
- Detect anomalies or leaks immediately.
- Optimise the operation of cooling towers and boilers.
- Model scarcity scenarios or supply disruptions.
- Integrate sustainability indicators into strategic decision-making.
Digitalisation brings visibility, traceability and the ability to act proactively on the resource.
4. Towards a new corporate water culture
Efficient water management cannot be confined to the technical sphere. It must be embedded in a company culture in which every area —from operations through to management and communication— shares common objectives. This implies:
- Clear internal policies and quantifiable objectives.
- Staff training in sustainable practices.
- Collaboration with suppliers and customers to reduce the water footprint of the value chain.
- Transparency and systematic reporting through indicators such as the Water Footprint or ESG requirements.
It is this integral approach that really turns water into a strategic resource and not merely an operating cost.
Conclusion
In a future increasingly shaped by scarcity and climate uncertainty, industry and the energy sector have the opportunity —and the responsibility— to adopt innovative, efficient and sustainable water management. Those organisations that understand water as a strategic asset will gain in resilience, competitiveness and social value, while contributing to the preservation of a resource that is essential for society as a whole.