Don't believe the myths: you can't get a UTI by taking a bath, sitting in a hot tub, or swimming in a pool or ocean. However, the bacteria present in pools, hot tubs, and even your own personal bath can seriously aggravate your UTI if you have one.

Recent scientific studies in 2025 and 2026 have confirmed a significant link between ocean swimming and Urinary Tract Infections (UTIs), including bladder infections. Research conducted at UC Berkeley found that recreational contact with seawater, especially near urban areas, correlates with a higher risk of UTI symptoms. This is primarily due to fecal contamination and the presence of E. coli in the water, often caused by aging sewage infrastructure or runoff after heavy rains. When you swim, bacteria in the water can enter the urethra, leading to infection. To minimize risk, it is a "pro-tip" to avoid swimming within 72 hours of heavy rainfall, shower immediately after exiting the ocean, and check local water quality reports (like "Beach Report Cards") before heading into the surf.