Reserve

means the quantity and quality of water required—

(a)to satisfy basic human needs by securing a basic water supply, as prescribed under the Water Services Act, 1997 (Act No. 108 of 1997), for people who are now or who will, in the reasonably near future, be—
(i)relying upon;
(ii)taking water from; or
(iii)being supplied from,

the relevant water resource; and

(b)to protect aquatic ecosystems in order to secure ecologically sustainable development and use of the relevant water resource.