Citri proRESI

Who we are

BLUEOTTER provides premium environmental services to clients and partners through non hazardous waste valorisation and treatment units, operating with maximum environmental responsibility in the communities where it is based.

In 2018 BLUEOTTER merged under the same brand and management team, CITRI and CME ÁGUAS/PRORESI`s waste management units, favouring partnerships with clients and other operators within the sector, thus assuring a better environmental management service in all the value chain.

Following the best environmental and management practices on its technical confinement units in controlled landfill; waste sorting and recycling; organic waste treatment; and processing and preparing alternative fuels from waste, with its renewable energy production units responding to society needs and assuring the best environmental solutions and safeguard of natural resources.


As code of practices BLUEOTTER adopts the best available European practices and objectives set forth in the Paris and United Nations agreements, in respect of climate change and defense of a lively and sustainable Planet. In that sense, every environmental management process and service is certified to assure premium services to clients.

Investing in innovative and disruptive projects, using the best available techniques and most innovative technologies to reduce resource consumption and continuously increasing waste valorisation, actively tackling climate change.

As a community, it is increasingly concerned with environmental sustainability, defending the adoption of behaviours which promote social and environmental well-being in all the Planet.


BLUEOTTER aims to be recognized as a reference for its excellent environmental practices, promotion of sustainability, quality and severity of management and services values.

BLUEOTTER is oriented by a continuous improvement model for its processes, methods and technologies. Innovation is achieved by minimizing environmental impacts and risks within this activity which is essential to communitarian life, respecting the environment and the well‑being of communities, employees, clients and partners, through the best environmental practices.

Awareness for this cause is everyone’s duty. At BLUEOTTER such responsibility is assumed with seriousness and professionalism, supported by a wide technical and management team tried-and-tested for more than 20-years of experience within the area.

Continuously contributing for technological innovation and environmental management procedures, fostering the development of waste valorisation and creation of alternative products and materials, promoting sustainability and overcoming our generation’s climate change challenge.

Actively cooperating with customers, suppliers and institutions, setting out partnerships for the improvement and implementation of the best international environmental practices and most innovative technologies available in the market.

Investing in projects and innovative technologies which contribute to increase competitiveness, improvement of customers and community services, continuously promoting BLUEOTTER’s internal and external sustainability.

What we do

Under the same brand, BLUEOTTER operates in two locations within the Lisbon area, in both banks of Tagus river. It aims to provide its customers a premium service, enlarging the offer of services provided and treatment solutions, through its two treatment and waste disposal units by means of technical confinement in landfill; two waste valorisation units, RCDs and alternative fuels production; a sorting unit; bioremediation waste valorisation unit; two renewable energy production plants (solar plant and biogas plant, integrated with the production); and two certified laboratories as well as ISO 17025 certification.