6Planned environmental water

6  Planned environmental water  (1) For the purposes of this Act, planned environmental water is water that:  (a) is committed by:  (i) the Basin Plan or a water resource plan for a water resource plan area; or  (ii) a plan made under a State water management law; or  (iii) any other instrument made under a law of a State;   to either or both of the following purposes:  (iv) achieving environmental outcomes;  (v) other environmental purposes that are specified in the plan or the instrument; and  (b) cannot, to the extent to which it is committed by that instrument to that purpose or those purposes, be taken or used for any other purpose.  (2) For the purposes of this Act, planned environmental water is water that:  (a) is preserved, by a law of a State or an instrument made under a law of a State, for the purposes of achieving environmental outcomes by any other means (for example, by means of the setting of water flow or pressure targets or establishing zones within which water may not be taken from a water resource); and  (b) cannot, to the extent to which it is preserved by that instrument for that purpose or those purposes, be taken or used for any other purpose.  (3) The water may be committed to, or preserved for, the purpose or purposes referred to in paragraph (1)(a) or (2)(a) either generally or only at specified times or in specified circumstances.  (4) Without limiting paragraph (1)(b) or (2)(b), the requirements of paragraph (1)(b) or (2)(b) are taken to have been met even if the water is taken or used for another purpose in emergency circumstances in accordance with:  (a) the instrument referred to in that paragraph; or  (b) the law under which the instrument is made; or  (c) another law.