It is the job of the TEO AöR to direct, purify and process raw sewage and then return it to its natural cycle. In 2003 the communities of Telgte, Everswinkel and Ostbevern decided to work together at an official level and in 2012 this resulted in the establishment of a cooperative company, the ‚TEO public-law corporation‘. Their tasks and responsibilities comprise the collection, transference and purification of the sewage and waste water accumulating in each community area, this entailing further processes such as controlled discharge, flow regulation, percolation and irrigation. The TEO AöR now manages four sewage circuits and four sewage treatment plants. TEO personnel are responsible for more than 300 km of sewage channels and tunnels, several pumping stations and various rainwater retention basins, clarifiers and overflow tanks. All these installations have to be maintained, controlled, serviced and repaired and generally kept up-to-date and in good working order.