Our activity

Área de Negocio

TEDAGUA’s main activity is the design, construction and exploitation of all types of drinking water treatment plants, whether sourced from watercourses, the sea or brackish water (DWTPs, Seawater Desalination Facilities and Brackish Water Desalination Facilities), as well as urban and industrial wastewaters (WWTPs and IWWTPs) with their corresponding stages (pre-treatment, biological, tertiary, digestion, sludge dehydration and drying, deodorization, etc.). We also project and execute all kinds of hydraulic works that supplement treatment plants, such as deposits, sewer pipelines, collectors, etc.

TEDAGUA’s R&D (Research & Development) department provides its significant experience acquired through its track record of 25 years and a number of projects executed to the full satisfaction of our clients. Commissioning us the development of a facility implies automatically benefiting from this substantial know-how at no extra cost.

During the construction phase, the guidelines established by the Technical and Engineering Departments are applied, obtaining the maximum quality both in relation to construction and to the electromechanical and control equipment that is installed. All of this, while maintaining and improving the workplace safety of our personnel with respect for the environment.

Our modular plants are designed and manufactured at our own workshops, which allows us to ensure quality levels that are difficult to match. The functioning of each machine is stringently tested before it is sent to its destination, thereby guaranteeing that the installation will work from the very first day as expected.

To carry out these activities, TEDAGUA has a multidisciplinary team of highly qualified, experienced professionals, offering constant advice from the design and planning phase, and during the entire execution. Our personnel’s Continuous Training Plan guarantees the best results in a company that is constantly evolving.


As its name implies, desalinization consists of separating the salt from the water, obtaining water that has the sufficient quality for a given use; normally for human consumption (drinking water) or for use in industrial, agricultural or other activities.

Desalación de agua de mar y salobre

Desalination can be accomplished through different techniques, such as distillation, freezing, flash evaporation or hydrate formation, but nowadays the reverse osmosis method is the most used and the most widespread.

Desalination via reverse osmosis, whether involving sea water (Seawater Desalination Facility) or underground or brackish water (Brackish Water Desalination Facility), consists of pumping high-pressure water and making it flow through almost waterproof membranes that separate the water from the salt, thereby obtaining two types of water: one that is dumped, with a high salt concentration (brine) and another one with a low salt concentration which, when properly treated (re-mineralization, in the case of drinking water) will be the water that will be suitable for its final purpose.

The water will require a number of pretreatments before undergoing the reverse osmosis process, depending on the quality of the raw water (sand filtration, nanofiltration, microfiltration, etc.) with the purpose of avoiding damage to the delicate osmosis membranes.


Water purification

Due to the increase in the demand of drinking water, the number of hydraulic resources in use is on the rise. This implies that we will find wildly different situations and water characteristics when procuring water that is suitable for human consumption.

At Drinking Water Treatment Plants (DWTP), raw water is subjected to a series of processes with the purpose of eliminating any substances that may be noxious for human consumption. In conventional plants, these processes basically consists of:


Conjunto de mecanismos que regulan el caudal de entrada del agua en la planta para adecuarse a la capacidad de tratamiento de la misma.


A process by which flocculate is created through the action of chemical reagents which, when slowly circulating through settling tanks, are deposited at the bottom of them, and are subsequently extracted and adequately eliminated.


This is commonly accomplished by making the decanted water flow through a sand bed, where the particles that were not separated during the flocculation process become trapped.


Chlorination method with the purpose of guaranteeing a chlorine residual throughout the distribution pipes.

At TEDAGUA we develop and operate Drinking Water Treatment Plants for populations, where we employ both the aforementioned conventional treatments and specific, cutting-edge treatments applied to the production of high-quality drinking water (chlorine dioxide chlorination, selective nanofiltration membranes, microfiltration, treatments using activated charcoal, etc.).


Depuración de aguas residuales

Sewage is treated at Wastewater Treatment Plants (WWTP), where, once noxious substances have been eliminated, it is returned to bodies of water in optimal quality conditions, or it may be reused.

The water treatment process at a WWTP involves a number of stages:

Screening chamber

This is where water arrives at a WWTP, and where heavier or larger materials are retained and removed.

Bar screening

In this phase, coarse and fine materials are separated to be transported to a landfill in containers.

Degritting / Degreasing

Process by which sands are separated through sedimentation and greases through flotation.

Primary Settling

In this phase, settable and floating materials that could not be eliminated in prior stages are removed.

Biological Treatment

Process by which a series of microorganisms degrade any organic matter.

Secondary Settling

In secondary settling tanks, the sludge generated during the biological treatment is separated from the treated water that will then be spilled in the natural medium as per the quality conditions required by the regulations in effect.

Sludge Treatment

The sludge generated during the previous processes has to be treated to be sent in optimal conditions to authorized landfills.


Wastewater regeneration

According to our laws, the concept of “direct reutilization” of water corresponds to “any water that, having been already used and before its restitution to public watercourses, is applied to other different, successive uses.” Therefore, this implies the use of water after having undergone a “regeneration” process.

Regenerated water is a solution to the excess of demand in areas where natural water sources are insufficient. In this way, the management of water resources is improved by using waters of different qualities depending on their final purpose.

The most widespread use of regenerated water (80%) is irrigation, with 12% being used for golf course watering, street washing and park and garden watering.

There are various technologies that are applied in water regeneration, with the most widespread being:

Physical-chemical treatments

Coagulation, flocculation and lamellar settling


Through the use of sand: Conventional or pulsed-bed filtration.
Through the use of membranes: Microfiltration, Ultrafiltration and Nanofiltration


Ultraviolet rays, chlorination or ozonation.


Reverse osmosis

TEDAGUA has successfully applied most of these systems in its projects and has different lines of research aimed at optimizing its water regeneration processes.

Industrial wastewater

Modular Plants

TEDAGUA manufactures a wide range of “turnkey” reverse osmosis purification and desalination plants. Their compact, proven and reliable design, in addition to their short delivery times, turn them into an ideal solution for the client in most cases.

Having the best professionals has led us to be leaders in our sector. Over 80% of our staff is composed of civil, industrial, agricultural, public works and chemical engineers, as well as bachelors in biology, geology and environmental sciences, supported by a great administration and general services team.

From our employees we demand a high degree of teamwork capabilities and a knack for continuous improvement, professionalism and responsibility, humility, commitment and customer focus, so as to be able to offer the highest degree of quality that sets us apart from the competition.

Operational services

Operational services

With the purpose of offering as global solution to each client, once the construction and commissioning of the plant has been completed, TEDAGUA offers its clients a complete maintenance service, which may simply include the provision of the necessary reagents and parts and qualified personnel for each facility, or the global management of each project though the design and stocking up of the equipment, their installation, the quality control of operations, and financing of the total cost through BOT (build-operate-transfer) and BOO (build-own-operate) contract models.

Furthermore, TEDAGUA offers the reconditioning of old equipment that had not been manufactured, installed or maintained by TEDAGUA up to that point, ensuring their proper operation.

Let us handle your project. At TEDAGUA we offer integral solutions.

Other Hydraulic Infrastructure

Other Hydraulic Infrastructure

If we consider hydraulic infrastructure to be a project in the field of civil engineering in which the primary element is water, one can easily comprehend that, while TEDAGUA’s main activity has always focused on the design and construction of all kinds of water treatment plants, most projects undertaken have required the design and construction of facilities or infrastructure to supplement those plants.

In the case of the supply of drinking water, these infrastructures usually consist of the procurement and storage of raw water (diversion dams and headworks, pumping stations, regulating reservoirs, etc.), the treatment plant (DWTP), the storage of treated water in tanks and the distribution network through the use of main distribution lines.

If we consider that the water supply system ends at the building of the end user, whether a private dwelling or an industry, it is also the point where the wastewater treatment system begins. Depending on the degree of water contamination, it may be necessary to install a pre-treatment system of higher or lower complexity before the waters reach the network of drains that lead them to the wastewater treatment plant (WWTP). Water treated at the WWTP can be directly spilled in a watercourse or the sea, or led to a wastewater regeneration plant to then be reused for various purposes unrelated to human consumption (agricultural irrigation, garden and golf course watering, street washing, etc.).

On the other hand, the modernization of irrigation systems through the installation of new pipes, filtration systems, the integrated management of irrigation areas and the automation and remote control of the operation, are usually infrastructures that supplement desalination plants. In these projects, which see the participation of irrigation communities, watershed organizations, irrigation promotion companies, electric companies, etc., our significant experience allows us to coordinate the design and execution phases with all of them, so that the highest levels of satisfaction can be reached for end users and investors while respecting deadlines.

TEDAGUA has a multidisciplinary and highly diversified team that allows us to undertake projects involving any of the infrastructures mentioned above, guaranteeing the perfect functioning of the facilities in every case, and all of this with the respect for the environment and the community that is demanded nowadays for these types of projects.



If all you really need is to have the facility that you are currently developing supervised, or you need to study any modification to it, TEDAGUA’s Engineering Team can offer you its years-long track record and experience across multiple projects to perform that supervision, in order for you to obtain the best possible facility.