distribution systems to a wide range of consumers, and therefore constitute the basic infrastructure in each city. The main objective of this research is to identify and prioritize critical and critical assets of water supply facilities including reservoirs, transmission and distribution networks, refineries, dams, tanks, wells, rivers, based on economic value criteria , Functional and unique value through the AHP hierarchical compilation method and Risk Analysis and Management for Critical Asset Protection )RAMCAP(.Based on the combined method of Amir Kabir Dam, Taleghan Dam, Lotyan dam, Lar dam, Mamlo dam, Nimrod Dam, Ziarat dam, Shahid Ghafour Dam, wells, springs, rivers, No. 1 treatment plant (Jalaliyeh), No. 2 treatment plant (No. 3 and No. 4), No. 5, No. 5, No. 6, No. 7 (Sohanak), Seahqeraniyeh Sewage Treatment Plant, Municipality Sewage Treatment Plant, Zargand Sewage Treatment Plant, Gheitariyya Sewage Treatment Plant, Ghods Town Sewage Treatment Plant, Shosh Sewage Treatment Plant , Ekbatan sewage treatment plant, pumping stations, storage tanks, water distribution network B¬Rsany system were critical of Tehran. Based on the defined economic value criteria, the value of the Letian dam and the Amir Kabir dam and Taleghan Dam respectively were 0.1477, 0.1359 and 0.1109, respectively, in the first to third positions, respectively, and the distribution network and reservoirs were ranked respectively 24 and 25 were assigned 0.0046 and 50.004, respectively.