Half the suburb housing stock keeps a 40-gallon failure risk over the living room. Age math, pan checks, and the replacement window.
Subdivisions were built in a season, plumbed with the same tank, and age on the same clock. How to use your neighbors' failures as your early warning.
Soil that swells and shrinks with the weather is hard on rigid buried pipe. Bellies, offsets, and the camera footage that proves them.
Twenty years of cooking narrows a kitchen drain from the inside. Why the cable keeps 'fixing' it for three months at a time.