In carrying out this division, the conservancy shall cooperate with and consult with the city or county where a grant is proposed or an interest in real property is proposed to be acquired; and shall, as necessary or appropriate, coordinate its efforts with other state agencies, in cooperation with the Secretary of the Resources Agency. The conservancy shall, as necessary and appropriate, cooperate and consult with a public water system that owns or operates facilities, including lands appurtenant thereto, where a grant is proposed or an interest in land is proposed to be acquired.