Home Tank cleaning and disinfection AEP piping test pressure Cleaning and Disinfection of Pipes Flow / Pressure control of fire hydrants Leak detection HERLI® Agent and Distributor Contact us The Sder company was created in October 1992 to be associated with the quality approach of the main managers of private or public drinking water networks. Taking into account : - the maintenance and improvement of water quality, - the obligation to maintain structures storing or transporting drinking water, - water losses linked to the specific condition of the pipes and the length of the networks, - changes in environmental protection regulations, allows us to be a privileged partner . The sder makes available to them its know-how to meet their requirements. We market HERLI products and equipment intended for cleaning and disinfection of tanks, pipes, drinking water connections, regeneration of boreholes, etc. We provide on-site training for personnel assigned to maintenance of these works. At the request of customers, we provide SERVICES in: - Cleaning and disinfection of tanks , - Cleaning of pipes using the HAMMAN process , - Disinfection of pipes , - Installation of ladders, guardrails, anchoring points , - Flow rate / Pressure of fire hydrants and hydrants . And since 2002, we have been developing the search for leaks in drinking water pipes, with the latest innovative equipment on the market (pre-locator, correlator, multi-point correlator, acoustic detector, tracer gas). Our quotes are free and without obligation . Offices and agency : 114, rue Emile Zola - 62,000 ARRAS Tel. 03.21.24.38.98 - Fax 03.21.24.38.99 e-mail: sder62@orange.fr Headquarters : Les Carderies - 87 260 SAINT-BONNET-BRIANCE - Tel. 05.55.08.43.31 - Fax 05.55.08.43.32 e-mail: sder87@orange.fr Legal Notice