Section 4
SEC. 4. The National Irrigation Administration or any other government agency as may be authorized shall have the power to collect from the users of the Project such fees, or charges as may be necessary to, among other things, finance the continuous operation and maintenance of the Project, and recover, within a reasonable period, the financing and construction cost thereof in accordance with Section six of Republic Act numbered forty-eight hundred sixty, as amended: Provided, That in the case of charges or fees for irrigation, such charges or fees shall be of such level as to cover operation and maintenance costs and, to the extent that the incentives to use the irrigation facilities shall not be impaired, to recover capital invested for the irrigation phase within a period of not less than twenty-five years.