"Air and water are essential to life; they must be a source of health and well-being rather than a source of diseases" : this is the motto of C.C.S. "health and environment" which specialized years ago in public hygiene and environment,C.C.S. "health and environment" is at the service of local authorities, water production and distribution institutions, health sectors, etc. It acts at different levels such as: microbiological analysis of drinking water, bathing waters as well as food; selling products and equipment along with after-sales service; advanced training of field personnel Through these actions, C.C.S. "health and environment" has played an essential role in preventing and fighting water-transmitted diseases. Its effective contribution to field personnel is not only technical but also in the form of training.