Hi Doug Yes, there are deflection and sag standards. The local building inspector should be able to help you here (he signed off on the finished work, did he not?), and if necessary, a residential structural engineer should be able to tell you exactly what the specifications are and assess your situation.
Most modern residential framing is such an overkill that unless you are storing large burgler-proof safes full of lead sinkers (for fishing) in the middle of your floor (or the equivalent), floor sag....at least in my experience, is usually not a big problem. Whether 1" of sag is too much will depend on the spanned distance....but there are a lot of variables to be considered. Assistance from a licensed structural engineer is probably what you need right now.