Is your water bill rising for no clear reason? A pressure test is the fastest way to find a leak in your swimming pool plumbing. Here in Las Vegas, the desert heat puts extra stress on PVC pipe joints and pool plumbing lines. That means even small cracks can turn into big water loss fast. At Hound Dog Leak Detection , we use plumbing pressure testing every day to help pool owners across Henderson, Summerlin, and the entire Las Vegas Valley. In this guide, we break down what a pool pressure test is, how it works, and why it matters for your swimming pool. What Is a Pool Pressure Test? A pressure test checks each plumbing line in your pool for leaks. Here is how it works in simple terms. We isolate each line—the skimmer line, return lines, main drain, and any line running to a pool cleaner or water feature. Then we plug each pipe using test plugs or expansion plugs at the equipment pad and at the pool side. Once a line is sealed, we pressurize it with air or water. For air tests, we use a pressure tester with a pressure gauge to push air into the pipe and monitor the pressure gauge. If the psi holds steady, the line is tight. If the psi drops, there is a leak in that pipe. It is that simple. For some lines, we connect a garden hose and fill the pipe with water until the pressure reaches the target psi. Then we close the valve on the pressure tester and monitor for pressure loss. A pressure drop tells us a leak is hiding somewhere along that run. Why Pool Owners in Las Vegas Need Pressure Testing Las Vegas sits in the Mojave Desert. Water is precious. A small plumbing leak can waste thousands of gallons each month and drive up your water bill. Worse, a leaking pipe under the pool deck or around the pool can erode soil and cause structural damage to your home. Pressure testing helps us isolate the problem fast. Instead of guessing, we pinpoint the exact line that is failing. That saves you money on repairs because we only dig where we need to. Common reasons Las Vegas homeowners call us for a pressure test include the following: Dropping water level with no visible cracks in the shell Air bubbles coming from the return lines Wet spots on the pool deck or in the yard near the equipment pad A pump and filter system that loses prime If your swimming pool shows any of these signs, you may have a potential leak in your plumbing system.