A self-contained swimming pool for containment of water and generation of water currents therein for exercise, therapy and or rehabilitation of a user comprising a rigid frame 1 exteriorly located in relation to an inner water containment area 2. A set of water return channels 3 in communication with the inner water containment area 2. A propulsion system 4 in communication with the set of water return channels 3 and the inner water containment area 2. A hydraulic system 5 for driving the propulsion system 4 using a hydraulic fluid 6 to produce a current 7 in the inner water containment area 2 allowing positioning of a user 12 in the current 7 for exercise, therapy and or rehabilitation therein and wherein the hydraulic system 5 is self-contained and mounted external of the rigid frame 1.