Deficient construction quality is considered as one of the constraint operation and maintenance of irrigation systems. This can be avoided if the contract document of construction for new irrigation network entailed performance indicators that need to be achieved after the construction was completed. For this reason, Experimental Station for Irrigation and stakeholders have formulated output performance indicators based on ideal conditions that need to be accomplished in the development of new irrigation networks. This formulation of output performance indicators and assessment method was verified in 3 (three) Regional Irrigation (RI) namely Jengkol in West Java, Ciliman in Banten and Bekri in Lampung. The updated indicators are expected to be used as one of the guidelines in the development implementation and it is expected to be included in contract specification and is to serve as an evaluation tool of Preparation Operation and Maintenance.