Outdoor water uses not subject to restrictions or bans are those required:
(a) for health or safety reasons;
(b) by regulation;
(c) for the production of food and fiber;
(d) for the maintenance of livestock; or
(e) to meet the core functions of a business (for example, irrigation by golf courses as necessary to maintain tees and greens, or irrigation by plant nurseries or agricultural operations as necessary to maintain stock or establish new plantings, wash equipment to prevent damage and/or maintain performance, pest management and plant cooling).