Water Code § 60221

Without being limited to the following enumerations, a district may, among other things but only for the purposes of replenishing the groundwater supplies within the district:

(a) Buy and sell water;

(b) Exchange water;

(c) Distribute water to persons in exchange for ceasing or reducing ground water extractions;

(d) Spread, sink and inject water into the underground;

(e) Store, transport, recapture, recycle, purify, treat or otherwise manage and control water for the beneficial use of persons or property within the district.

(f) Build the necessary works to achieve ground water replenishment.