Apple Valley’s tract homes sit on slab foundations, and the same soil movement that stresses pipes under the slab can also shift the floor flange a toilet sits on, loosening the wax ring seal at the base over time. Add in the region’s hard water, which builds up mineral deposits inside flush valves and fill valves faster than it would in areas with softer water, and it makes sense that toilets here tend to develop running water, weak flushes, or a wobble at the base sooner than homeowners expect. A toilet that is not working right rarely fixes itself, and waiting usually means a bigger water bill or water damage to the floor.