Why is there water in my passenger side cab

Sorry to hear about your problem. If the A/C drain is clear and hooked up. My first question would be does the water have any smell if it does it could be coolant leaking from the heater core or a heater hose under the dash. Does this vehicle have a sun roof if so it could be coming in around the seal or the drains for the sun roof could be clogged. Hopefully this will help if you need more help you can call me at 410-944-6750 Thanks Bobby