Car sputters alot

I have been looking into several possible reasons my car may be sputtering. Most people seem to rule out the chance of it being water in my gas. But this never happened before Nashville got flooded and the gas station that I get my gas from was partially underwater during the flood. As my name says, I know a little not alot when it comes to cars. Will the code reader at an autoparts store actually say if I have water or will it give me a coded version like, “fuel too lean” which could mean anything along that path including the fuel filter?

All that exists is a coded version. If what you’re saying is that your check engine light is on, then there isn’t much point in speculating until you actually do have the codes read. Get them and post them - but the actual codes like “P1234”