Group 4- Comprehensive operation and maintenance and Special repair of ward level Piped Water Supply Schemes constructed by the ' ' Panchayati Raj Department ' ' and handed over to PHED & Mini Water Supply Scheme for 4 years; excluding the cost of energy charges and operator wages in 506 ward & 558 Scheme of Block- Sonbarsa and Dumra, under P. H. Division, Sitamarhi.