M Manhattan hotel is located on Jalan Prof.DR. Satrio, Setiabudi, South Jakarta, wiyh 5.000 m persegi, and the high building 132 m. This hotel consists of 29 floors with 238 bed rooms. and 3 basements floor used as parking lot, and mechanical electrical rooms. The water sources is derived from PDAM (Regional Water Supply Company), and reserve of deepwel which respectively has a capacity of 206 m cubic/day, and 122.77 m cubic/day. Based on calculation result by means of SNI Standard 03-6481-2000, therefore this hotel has a lower (ground) tank with a clean capacity of 328.77 m cubic. The water from ground tank will be transfer to the roof tank by using pump with at the rate of flow 69.25 m cubic/day. There are two roof tanks a respective each capacity of 34.63 m cubic. The water from roof tank will be distribute to any point in each floors. For the 27, 28 and 29 floor the water will be flowed by using hidropneumatic system. A separate system will be applied in wastewater piping system between soil water, used water and kitchen wastewater . later the soil wastewater will be channeled directly to the wastewater drainage. The soil water originating from plumbing equipment on the basement floor will first received in a sumpit, then it will be pumped through a wastewater disposal. Then ven system consist of stack vent, brsnch vent, loop vent, and yoke vent. Yoke vent are installed in every five floors with the purpose of equqlizing the pressure. Polyvinylchloride (PVC) class VP are used for distribute clean water. The water flow to ground tank and after that, it will be pump to the roof tank with 65 mm diameter. And the distribution pipe from the roof tank using 200 mm diameter. Pressure reducing Valve (PRV) are installed in apipe shaft at floor II and floor 22. cast iron Pipe (CIP) are used for wastewater piping with 200 mm diameter and the vent stack with the diameter of 100 mm. The rain water from the roof of 5 floor with total area 780 m persegi and 30 floor with total area 812 m persegi will flow through roof gutter to the ten drainage pipe stack with 100 mm diameter to the drain open channel and will be channeled in city drainage. Based on the calculation result, such diameter can flow the water proportional to the maximum waterfall that is 200 mm/hour. And the rain water disposal going to the city drainage has a rain water at the rate of flow 82 liter/second. The fire protection with hydrant box is installed on each floor. Based on the calculation result in the hydran system good operate around 45 minute with storage 146.25 m cubic which can work simultancously for every 5 floors.