Water treated
Guardia: 15-36812019 / 15-37013032 / 15-31960886

About us

OPECI SRL is a company dedicated to the construction, renovation, operation and maintenance of sewage and industrial treatment plants.

Our company was founded in 1997 and currently has more than 140 plants located throughout the country and we have carried out over 80 jobs that guarantee our experience.

We are aware of the reality and of the need to maximize the investment made in the treatment facilities, and that it is crucial to have a highly trained staff with extensive experience in the field.

Our structure

We have a team of highly trained professionals and technicians to carry out operational tasks and the construction of wastewater treatment plants.

To complement Human Resources, we have the following infrastructure:

  • Technical and Administrative Offices.
  • Fleet of vehicles.
  • Laboratory.
  • Warehouses.
  • Construction workshop.


Plants we built Plants we run Plants we built and run

Our procedures

OPECI SRL uses the biological system of activated sludge to reduce contaminants in wastewater. This system mimics and accelerates the biological processes that occur in nature. This treatment is one of the most used worldwide and ensures the removal of a high percentage of contaminants.

By characterizing the wastewater, the available space and the current legislation, OPECI SRL uses the knowledge of its professionals to carry out the project and the construction of treatment plants. In order to do this, it uses not only appropriate, but the highest quality building materials for each specific project. Reflecting this, the plants made out of sheet metal and raised concrete and/or buried concrete are the ones that remain effective over time.

Our monitoring and control of wastewater treatment plants is based mainly on the comprehensive survey of the facilities and operation of electromechanical equipment, determining the in-situ parameters and taking samples of different stages of the process for laboratory analysis. In this way, the wastewater treatment plant is methodically monitored, which leads to an efficient operation and to be able to diagnose, prevent and solve potential problems early on.

The operation of the plant involves the presence of an operator who carries out general tasks of cleaning, handling and drying sludge, and determining in-situ parameters. He/she will be trained in the tasks inherent to the process and will be supported and guided by a specialized professional who will make regular visits to the plant and by a series of measurements in the field and laboratory, will determine the steps to be followed for a normal performance of the installation.

We are convinced that the best service that can be offered is to provide the customer with the level of attention he/she needs.

Therefore, our work plan is flexible and includes various levels of monitoring and control, adapting the operator’s opening hours and the frequency of professional visits to the possibilities and needs of our customers.

We also offer emergency service 24 hours a day for any situation that may occur in the wastewater treatment plant.

Enviromental policy

We provide organizations with the elements necessary to comply with an environmental management system (ISO 14000 Family). We offer assistance and ongoing advice to achieve the continuous improvement of that system and to satisfy the requirements of the current environmental standards, avoiding possible sanctions and/or fines.

For this purpose, we offer comprehensive services for the construction, operation, maintenance and renovation of wastewater treatment plants.




  • Runoff control.
  • Emissions control
  • Emergency plans.
  • Waste control.
  • Consumption control.
  • Evaluation of enviromental aspects.
  • Identification of legal requirements.

Construction and reonovation of wastewater treatment plants

We offer the following solutions:

  • Characterization and feasibility studies of wastewater.
  • Construction of wastewater treatment plants depending on the needs of each client.
  • Implementation of improvements and renovations of existing facilities.
  • Tertiary treatment for irrigation reuse.

Operation and maintenance of wastewater treatment plants

We offer the following services:

  • Preventive and corrective maintenance of wastewater treatment plants.
  • Determination of parameters at different stages of the process to maintain system stability.
  • Removal and final disposal of biological sludge and fat, with the corresponding certificates.
  • Technical advice.
  • General cleaning tasks.
  • Drying of sludge for disposal.
  • 24-hour phone line and emergency assistance.

Rental of wastewater treatment plants

We offer various types of contracts depending on the customer’s needs.

Rental of bio-sludge dyhydrators for final disposal

In order to reduce the disposal costs of liquid biological sludge, we offer the alternative of drying the generated sludge in order to reduce the volume of sludge to be extracted.

Rental and provision of equipment for our customers:

  • Blowers.
  • Diffusers.
  • Engines.
  • Floats.
  • Moto-reducers.
  • Pumps.
  • PLC.
  • Control panels.
  • Dosing pumps.
  • Automatic measurement and control equipment for pH level.



Honda Coto ChangoMás
BT Sanofi Pasteur Carrefour
Alpargatas Jumbo Cencosud
SKF Barrick Coca Cola
Walmart Shell Molinos
Laboratorios Bernabó Alicorp Merck
Louis Dreyfus Commodities Royal Canin Sancor
Yamaha S.E. Casa de Moneda

Gated communities

Barrancas San José - Barrio San Agustín - Barrio Santa Teresa - Barrio Cerrado Diciembre (Cardales) - Barrio Septiembre - Casas del Alto - San Eliseo - Talar del Lago - Barrio Altos del Castillo - Barrio San Lucas - Fideicomiso La Comarca - Haras Santa María - El Cantón


Villa Mercedes, San Luis - Barrio Madre Teresa de Calculta, El Volcan, San Luis - Carpintería, San Luis - Los Molles, San Luis

Contact us

(+5411) 4005-5176 / 5198