A urinary tract infection (UTI) is an infection in any part of your urinary system — your kidneys, ureters, bladder and urethra. Most infections involve the lower urinary tract — the bladder and the urethra. Women are at greater risk of developing a UTI than are men.
Drinking lots of fluids helps your body make urine. This can flush bacteria out of the urinary tract. Fluids also keep you hydrated.