As part of the works on the reconstruction of Zagreb International Airport, IND-EKO rehabilitated the wastewater system by employing trenchless technology.  The aim of the project was the rehabilitation of the existing faecal sewer system in order to ensure water-tightness under all applicable standards and statutory requirements.  The sewer system lies within Zagreb International Airport complex.

More than 1,500 m of pipes were rehabilitated by employing the cured-in-place-pipe (CIPP) method, which means a resin saturated lining tube is installed in the pipelines.  A portion of the sewer system (200 m) was rehabilitated by way of the traditional dig-and-replace method. The project also included the rehabilitation of over 130 manholes.

Flying without an engine is possible, flying without the knowledge and skill is not.