Frank Bruckmann

Berliner Wasserbetriebe supplies drinking water. Its core task is to supply residents of Berlin and the surrounding area with drinking water and dispose of their wastewater. It operates water works and also provides sewerage services. Not only does it perform conventional wastewater treatment at its wastewater treatment works, but has also equipped the majority with biological nutrient elimination facilities, to maintain the quality of Berlin's lakes and rivers. The company was founded in 1992 and is headquartered in Berlin, Germany.

Berlinwasser Holding GmbH provides water services. The firm engages in disposal and treatment of wastewater. The company was founded in 2000 and is headquartered in Berlin, Germany.

Tierpark Berlin-Friedrichsfelde GmbH operates as a zoo. The company was founded on July 2, 1955 and is headquartered in Berlin, Germany.

E.ON Ruhrgas AG distributes gas. It offers gas transmission and storage solutions. Through a long pipeline system, the company supplies natural gas to gas merchant companies, distributors and industrial users in Germany and seven other nations. It also has interests in gas companies in other countries. Its customers comprises of regional companies, local distribution companies, industry and power stations. The company was founded in 1926 and is headquartered in Essen, Germany.

Veolia Wastewater Germany GmbH engages in the management and operation of drinking water supply and wastewater disposal systems. It offers infrastructure and consulting competencies for investment and development projects abroad. The firm’s services includes the design and implementation of operations management and management contracts, consulting and collaboration with financial investors. The company was founded in 2000 and is headquartered in Berlin, Germany.