The most common early warning sign is an unexplained spike in your water bill – often 50% to 200% higher than normal usage. You might also notice warm spots on your floors, especially in ground-floor rooms, or hear the sound of running water when all taps are turned off.
Other indicators include damp areas on flooring, sudden drops in water pressure throughout the house, or water pooling in your yard without recent rain. If you notice any of these signs, it’s important to call for professional leak detection immediately, as slab leaks can cause foundation damage and mold growth within just a few days.