Are bacteria naturally present in the bladder?

Always, Conc issue: Bacteria in bladder urine are nearly always from outside (rare exceptions). Their presence is considered ''normal" if the concentration is <100, 000 bacteria per cc, are ones commonly present in stool & ones without a track record of being very pathogenic. Bacteria concentrations increase if bladder not emptied well enough, urethra problems present, certain hygiene issues, high urinary sugar, etc.