About us

Company Traidenis, first producer of wastewater treatment equipment from glass-reinforced plastic (GRP) in Lithuania, was established in 1996.

Mission to implement such environmental solutions, due to which Nemunas river basin would be the cleanest in Europe and the Baltic Sea would be the cleanest sea in the world.

Vision to become the most reliable and attractive manufacturing company of wastewater treatment plants, to be known as an advanced European company with a professional working team.  

Values quality, scientific achievement and new technologies, teamwork, confidence and employees.

20190429_115955 (1)-9c610e7dad842845e2f2eeeba68e7974.jpg

One of the main ideas and goals of our activity is to work for the cleaner surrounding environment, as human activity inevitably affects the surrounding environment – underground and surface water bodies, animate nature, atmosphere and the Earth. Traidenis is well-known in Lithuania and abroad as a manufacturing company of wastewater treatment equipment and tanks. Over time it cleared out that liability for employees, customers and the surrounding environment ameliorates relationships with end-users, partners and ensures business longevity and stability. Growing business needs and positively evaluated company‘s achievements encourage further creative work and development”.

Sigitas Leonavičius
Chairman of the board

The first steps have been made in the field of environment protection.


Traidenis, the manufacturing company, which has been the first in Lithuania to manufacture wastewater treatment plants from glass-reinforced plastic (GRP), has been established. These were low-capacity biological treatment equipment of domestic wastewater for private houses and oil separators of 1–5 l/s capacity.

1997 - 1998

Production of higher capacity wastewater treatment plants (amount of treated wastewater up to 40m3/day) has started. Traidenis has become the member of Association of Lithuanian Chambers of Commerce Industry and Crafts, Engineering Ecology Association, Lithuanian Water Suppliers Association and Lithuanian Confederation of Industrialists.

1999 – 2003

Modular system of biological domestic wastewater treatment plants for settlements has been established. 200m3/p and higher capacity wastewater treatment plants, pump stations, chemically resistant tanks have been manufactured. Traidenis has become the member of Lithuanian Builder’s Association.


Environment Management System has been implemented in the company following ISO 14001:2004 standard. 500m3/p and higher capacity wastewater treatment plants, industrial wastewater treatment plants, firewater tanks have been manufactured.


A new moulding building with modern production equipment has been built. Traidenis has joined the United Nations Global Compact.


Assembly workshop with the most-up-to-date administration facilities has been built.


A new workshop is built and the most advanced technological Cross Filament Winding system is installed.


Assembly workshop for products of overall dimensions has been built. Tanks of 5m in diameter have been manufactured. Quality Management System has been implemented following ISO 9001:2008 standard.

2011 – 2017

The second line of tank production, applying Cross Filament Winding technology, has been installed. Double-layer, triple-layer tanks have been manufactured. Projects, supported by the EU Structural Funds, during which testing laboratory/experimental workshop are being established, company processes and production control are automated, are being implemented


The company Traidenis has installed a solar power plant that covers the company's electricity needs.

Company’s development

Products of Traidenis are produced in the modern moulding and assembly workshops applying the most advanced production technologies. A new workshop is built and the most advanced technological Filament Winding system is installed. The Filament Winding system increased the working efficiency several times.

Activity and products of Traidenis are covered by civil liability insurance. 

Membership in organizations and cooperation with educational institutions

Traidenis is a member of Engineering Ecology Association, Lithuanian Confederation of Industrialists and Vilnius Chamber of Commerce, Industry and Crafts. 
Sigitas Leonavičius, Managing Director of Traidenis, is the President of Alytus Regional Association of Industrialists, the Vice-President of Engineering Ecology Association, Board Member of Lithuanian Association of Industrialists and Vilnius Chamber of Commerce, Industry and Crafts as well as the President of Air Tourism Association.

Traidenis is closely cooperating with Lithuanian and foreign science and educational institutions: Kaunas University of Technology;  Aleksandras Stulginskis University; Vilnius Gediminas Technical University; Environment Management and Audit Institute;  Alytus University of Applied Sciences;  Lublin University of Technology, Poland; Jagiellonian University in Krakow, Poland; University of Humanities and Sciences in Siedlce, Poland.
Sigitas Leonavičius, Managing Director of Traidenis, has been the Chairman of the Board of Vilnius Gediminas Technical University since July of 2011.

Participation in social and cultural activity

Company is an organizer and sponsor of many public works: tree planting, beautifying of the city, etc. Traidenis was organizer and the main sponsor of the project Inanimate Nature: Water. 

Not once did the company sponsor the following organizations and projects:

Traidenis became a winner under the nomination of Socially Responsible Company 2007 between small and medium companies in Lithuania. 



question contact us