Manila Water Co., Inc. engages in the provision of water distribution services. Its segments include Manila Concession and Head Office; Domestic Subsidiaries; and Foreign Subsidiaries. The Manila Concession and Head Office segment represents the operations of the Manila Concession (East Zone) of the Company. The Domestic subsidiaries segment represents the financial results of the Philippine businesses such as Manila Water Infratech Solutions Corp. (MWIS), Calasiao Water, Manila Water Philippine Ventures, Inc. (MWPVI). The Foreign subsidiaries segment includes businesses outside the Philippines under its subsidiary Manila Water Asia Pacific Pte. Ltd. (MWAP). The Company’s subsidiaries include MWIS, Calasiao Water Company, Inc., MWAP, Manila Water Philippine Ventures, Inc., among others.