Drinking water likely helps with squirting, yes. Research shows that the fluid expelled during squirting comes primarily from the bladder, which means hydration directly affects how much fluid is available. Staying well-hydrated allows your bladder to refill more quickly during arousal, which appears to be a key part of the process.
What Squirting Fluid Actually Is
There’s been a lot of confusion about what squirting fluid contains, but ultrasound-based research has clarified the picture significantly. A 2015 study published in the Journal of Sexual Medicine used bladder ultrasounds at three points: before arousal, just before squirting, and just after. Before arousal, participants’ bladders were confirmed empty. During sexual stimulation, the bladders visibly refilled. Immediately after squirting, the bladders were empty again.
The fluid is primarily urine, but not entirely. Biochemical analysis consistently detects PSA (a protein produced by the Skene’s glands, small structures located near the urethra) in the expelled fluid. A more recent study using blue dye confirmed the bladder as the source by having participants drink the dye beforehand. The discharged fluid came out blue in every case, and PSA was still detected in most samples. So squirting fluid is a dilute mix: mostly bladder contents with a small contribution from the Skene’s glands.
This distinction matters for the hydration question. Since the bladder is the main reservoir, the volume of fluid you can expel is tied to how quickly and fully your bladder fills during arousal.
Why Hydration Matters
Your kidneys continuously filter blood and produce urine, and the rate at which they do this depends partly on how hydrated you are. When you’re well-hydrated, your kidneys produce urine more freely, which means your bladder fills faster. When you’re dehydrated, urine production slows and becomes more concentrated.
During sexual arousal, research shows the bladder can fill noticeably even if it was recently emptied. This rapid filling is part of what creates the sensation and physical conditions for squirting. If you’re dehydrated, there’s simply less fluid moving through your system to refill the bladder during that window of arousal. Drinking water in the hours before sexual activity gives your body more to work with.
There’s also a comfort factor. Many people describe the lead-up to squirting as feeling similar to needing to urinate. If your urine is highly concentrated from dehydration, the sensation may feel more uncomfortable or distracting, making it harder to relax into the experience. Dilute urine from good hydration can reduce that friction, both physically and mentally.
How Much Water to Drink
There’s no specific “squirting hydration protocol” backed by research. General guidelines from the Institute of Medicine recommend about 11 cups (2,700 mL) of total daily water for adult women, including water from food and other beverages. The average American drinks only about 4 cups of plain water per day, which falls well short of that recommendation.
For practical purposes, drinking a few extra glasses of water in the one to two hours before sexual activity is a reasonable approach. This gives your kidneys time to process the fluid and start filling your bladder. Chugging a large amount right beforehand won’t help much because your body needs time to filter water through the kidneys. Steady hydration throughout the day, with a modest boost beforehand, is more effective than last-minute overhydration.
Hydration Isn’t the Only Factor
Water intake sets the stage, but squirting depends on several other things working together. Arousal level matters significantly. The bladder filling observed in research happened during sustained sexual stimulation, not just from being hydrated. The physical and mental components of arousal are what trigger the reflex.
Pelvic floor muscle tone also plays a role. The muscles surrounding the bladder and urethra are involved in the expulsion of fluid. People with more awareness and control of these muscles often find it easier to either allow or encourage the release. Relaxation is a big piece of the puzzle, too. Because the sensation closely mimics the urge to urinate, tensing up to “hold it in” is a common instinct that works against squirting.
Anatomy varies from person to person. Skene’s glands range in size, and some people have more developed glandular tissue than others. A 2025 case-control study found that women who experienced squirting tended to have more active psychosexual profiles overall, suggesting that psychological comfort and openness to the experience factor in alongside the physical mechanics. Not everyone will squirt regardless of hydration, stimulation technique, or any other variable, and that’s normal.
What to Expect in Practice
If you’re exploring squirting for the first time, staying hydrated removes one potential barrier. Drink water consistently throughout the day and have a glass or two about an hour before. Empty your bladder before sexual activity so you’re starting fresh, which can also reduce anxiety about the urine-like sensation. From there, the bladder will begin to refill naturally during arousal.
The volume of fluid varies widely. Some people experience a small gush, others a larger expulsion. Hydration can influence volume, but individual anatomy and the intensity of arousal matter just as much. Placing a towel or waterproof layer on the bed can help you stay relaxed instead of worrying about the mess, which circles back to the mental component that research suggests is important.