Currently, we have representation, distribution and maintenance contracts for Elgressy E100, L200 and L300 products for the Autonomous Communities of the Basque Country, Navarra, Cantabria and Aragon, and shared agreements with other collaborators in Catalonia, Logroño and Burgos.

Elgressy is a manufacturing company leader in technological innovation, research and development of electrochemical water treatment systems in refrigeration or cooling towers and Sanitary Hot Water.

We also treat Potable Water for human consumption and Waste Water.

Elgressy systems offer reliable and efficient water treatment WITHOUT CHEMICAL PRODUCTS. Our technology has been approved by the Ministry of Health and Consumption through an investigation that was carried out during three years at the Mahou brewery (Alovera-Guadalajara).

We meet all of the requirements of ROYAL DECREE 865 / 2003 for the prevention and control of Legionnaires' disease.

Elgressy Systems use a patented method designed for carrying out water treatment for:

• The prevention of Legionnaires' disease and the elimination
  of biofilms.
• Extraction and control of the precipitation
  of calcium oxide incrustations.
• Protection against Corrosion.

Elgressy's products are:

• E100+L2OO System: For treating Cold Water; Refrigeration towers and Cooling towers.
• L300 System: Used for the Sanitary Hot Water System.
• EC2 System: Potable Water.
• Bleaching: Waste water treatment (textile industry, graphic arts, ceramics, etc.)

We guarantee Continuous Disinfection, in addition to physically extracting calcium oxide from the installation using our system and without causing damage, avoiding the chemical reactions that cause corrosion in installations through a process of cathodic protection.

We can guarantee water savings up to 70% in refrigeration and cooling towers. (Depending on the characteristics of the installation and the kind of water etc.) and we also offer the possibility of Reusing drain water for uses such as irrigating gardens or industrial processes, etc.

All systems include a computerized system that enables controlling treatment and guaranteeing proper system functioning from remote locations via GSM.

Clients with Elgressy technology in Spain

• Hospital CLÍNICO DE BARCELONA
• NH Hotels
• CASTELLBISBAL and ESPARREGUERA City Councils
• KRAFT Food company

E100 L200 System for Refrigeration Towers:

• REALIA (all buildings in Madrid such as the landmark Kio Towers and others in Barcelona on the Diagonal)
• MAHOU Brewing Company (Alovera, Guadalajara)
• AENA Air Traffic Control Center (Torrejón de Ardoz)

Reuse of used water for irrigation in garden areas

• El CORTE INGLES (Valencia, Ademuz)
• TORRE PICASSO (Paseo Castellana,Madrid)
• DRAKA Cables

Collaboration agreement for representation, distribution and maintenance of - Elgressy products-, for the E100, L200 and L300 systems in the Basque Country, Navarra, Cantabria, Logroño and Burgos.

Castillo Grupo Empresarial is an organization that was founded more than 35 years ago, with headquarters and geographical business base in Alava, and which has been dedicated to the installation and repair of water supply networks since it's founding.

As a result of the wide range of activities we are involved in we have included consulting, planning and engineering support in the services we offer. Even though many companies already have a team of engineers, many times collaboration with our team of engineers for carrying out projects and project control has given extremely good results.

Clients