A320 flight crew reported receiving multiple hydraulic system fault messages during departure. Flight crew returned to the airport and stopped on runway due to loss of nosewheel steering.

Narrative

On departure; passing through about 13;000'; we received ECAMs for G system low pressure; G Reservoir low level; and G Engine 1 pump low pressure. These were verified by info on the HYD page and fault on Eng 1 pump. The FO maintained flying duties and took control of radio calls; while I completed the ECAM and follow-up QRH checklists. We then received an ECAM for PTU fault and completed that checklist. After talking to dispatch and maintenance control via VHF radio; we decided to return to ZZZ. We delayed the return flight by 10 to 20 minutes to burn enough fuel to get below our max landing weight. On about a ten mile final we lowered the gear handle but did not get a down and locked indication; so we performed a manual gear extension. On final; approach control vectored in another jet to land behind us even though we had already told them we were stopping on the runway. After we told them again; that jet was assigned a different runway. Due to lack of nosewheel steering; we stopped straight ahead on runway XXC. ARFF (airport rescue and firefighting) checked us out and didn't notice anything out of the ordinary. We shut down engines as maintenance and a tug crew arrived. Maintenance noticed hydraulic fluid dripping near the right main landing gear. Maintenance pinned all 3 gear and the tug crew towed us in.Cause: Hydraulic line failure/maintenance practices? ATC internal communications between controllers--(forgot we told them about stopping on runway)