Technician Taylor arrived on site to investigate report of gas line disconnected from water heater we just installed. Technician found water heater to have the gas flex line disconnected from it. Client stated upon inspection inspector noticed that the gas line was not tight and leaking gas. Inspector disconnected line and turned off gas. Technician reconnected line and tested with mega bubble. Technician turned on gas and ignited pilot light. technician cleaned work area of trash and debris and pulled off.