The general court finds that an adequate supply of water is indispensable to the health, welfare and safety of the people of the state and is essential to the balance of the natural environment of the state. Further, the water resources of the state are subject to an ever-increasing demand for new and competing uses. The general court declares and determines that the water of New Hampshire whether located above or below ground constitutes a limited and, therefore, precious and invaluable public resource which should be protected, conserved and managed in the interest of present and future generations. The state as trustee of this resource for the public benefit declares that it has the authority and responsibility to provide careful stewardship over all the waters lying within its boundaries. The maximum public benefit shall be sought, including the assurance of health and safety, the enhancement of ecological and aesthetic values, and the overall economic, recreational and social well-being of the people of the state. All levels of government within the state, all departments, agencies, boards and commissions, and all other entities, public or private, having authority over the use, disposition or diversion of water resources, or over the use of the land overlying, or adjacent to, the water resources of the state, shall comply with this policy and with the state’s comprehensive plan and program for water resources management and protection.