At Gastec Group, we work every day to alleviate this problem through our sustainable solutions at all stages of the water life cycle and by this means deliver on Sustainable Development Goal 6 “Clean water and sanitation”.

We protect water at every stage of its life cycle to ensure the provision of quality water and its sustainable use. We are pursuing the goal of access for all to this essential commodity, as set out in the 2030 Agenda.

As a company, we have always had a sustainable approach to managing the water cycle comprehensively: we optimise the consumption of natural resources, minimise polluting resources in water treatment processes, maintain management standards for waste water treatment, and undertake awareness campaigns for the end consumer.

The integral water cycle begins by collecting raw water, purifying it in a DWTP, the maintenance and control of water storage, the management of distribution networks, and then its final distribution to the population. The final stage of the cycle is waste water treatment, when the water arrives at a WWTP. There we treat it to be returned to the natural environment or reuse it with minimal environmental impact.

Our professionals continuously analyse the water’s composition to ensure the highest quality in the end user’s tap. Similarly, we systematically evaluate the supply and sanitation networks. We thus achieve high performance rates in cities where we manage the water service, using the latest technologies to detect and repair possible leaks.

  1. Water collection from different sources
  2. Desalination: Removal of salt and other minerals from sea water or brackish water to make it fit for irrigation or human consumption
  3. Purification: Water treatment for human consumption
  4. Distribution: Maintenance of the water distribution network
  5. Water supply to populations and agricultural irrigation
  1. Maintenance of the sanitation network
  2. Water purification: Removing pollutants from waste water so as to achieve optimum quality to return the water to the environment
  3. Water reuse: Tertiary treatment for use in agriculture, urban parks and other activities

Water scarcity afflicts about half of the world’s population and, driven by global warming, threatens to spread. 844 million people lack a clean water supply and 2,300 million do not have basic sanitation, causing 2.6 million deaths per year from diseases linked to water quality.


3 out of 10 people still lack a reliable drinking water service. The challenges arising from the climate emergency hinder access to water, thus we have to act swiftly to find water treatment solutions that ensure the sustainable and safe supply of quality water for human consumption.

Gastec responds with water treatment solutions to make water safe or fit for consumption. It is designing water treatment infrastructure, to add to the facilities it has already built, to provide a safe access framework for more than 41 million people worldwide.

The company has built more than 125 drinking water treatment plants with a total capacity of 8.5 million m³/day


4 billion people lack basic sanitation services and more than 80% of the waste water used by humans is discharged into rivers and seas without previous treatment, leading to pollution that threatens people’s lives and biodiversity — and erodes sustainable development.

To overcome this serious problem, and to contribute to the achievement of 2030 Agenda, Gastec is planning optimal water purification solutions based on its experience and innovative potential.

With a minimum installation costs, it adapts its projects to a variety of settings such as:

  • populations of very different size
  • urban domestic or industrial high-load water
  • populations with strong seasonal variations
  • plants located where little space available
  • waste water treatment plants with a high visible and/or environmental impact
  • plants with different discharge levels