Rehabilitation Sereha is a specialist of pipe rehabilitation, either by sheathing or by bursting. These two techniques offer the advantage of making trench digging unnecessary with consequent significant savings of time and cost. sleeving rehabilitation is a technique by which pipe systems are overhauled using various methods : continuous sleeving, partial sleeving and obstruction clearance. A prior diagnostic inspection with a camera determines the works to be implemented. bursting rehabilitation consists in bursting the aging pipe work and replacing it simultaneously with new piping. This process makes it possible to increase the initial diameter and to change the type of material. Designed for drinking water and sewage systems, this rehabilitation method reduces the impact on the environment, noise levels and shortens delivery deadlines.