Yes, a plumber can find a water leak in your home or business. Plumbers are trained to use specialized equipment such as leak detection cameras, moisture sensors, and acoustic amplification devices to locate water leaks. They can also perform a visual inspection of your plumbing system to check for any signs of leaks, such as water stains or damp areas. Once the plumber has identified the location of the leak, they can recommend the best course of action to repair the leak and prevent further damage to your property. It's important to call a professional plumber as soon as you suspect a water leak to prevent further damage and ensure a timely and effective repair.