It is the declared policy of this State:
(1) That water utilities, both public and private, should have adequate supplies of water available, even in times of drought, to meet the present and future needs of this State on a continuing and sustainable basis;
(2) That, in order to ensure adequate water supply in northern New Castle County, water utilities in that area should implement rate and pricing structures which encourage the efficient use of water by informed residential customers; and
(3) That, in order to ensure that water utilities recognize the need to obtain a water supply adequate to serve customers in northern New Castle County, water utilities serving that area should periodically publicly certify that they have an adequate supply of water to meet future anticipated demand.