The extreme Texas drought had caused the foundation to shift under our recently purchased home and we suspected trouble. Fortunately, the foundation repair company who did the original work honored their "lifetime" warranty, even though the previous owners had not transferred it properly (but that's a different story.) They took several measurements and determined that the foundation had probably shifted enough to damage drain lines beneath the foundation. They suggested we have the water supply and drain lines tested for leakage. After reviewing Angie's List for reputable plumbers in the San Antonio area, we hired Will's Plumbing to perform a hydrostatic test of the drain lines. They scheduled a service call immediately and confirmed the drain lines were leaking. We scheduled a follow-up visit. Will's crew pinpointed the source of the leak with a remote camera, sketched the location of the three drain line breaks, and recommended tunneling under the foundation to repair the broken lines. We immediately stopped using the shower, sink, and toilet serviced by that portion of the drain and waited five months for the soil to dry and the foundation to stabilize. Once the foundation company confirmed that the soil under that part of the house was no longer shifting due to excessive moisture, we scheduled the excavation. Will's Plumbing acquired all necessary permits for us, tunneled under the house 30 feet to reach the three broken drain lines, carefully avoiding damage to a maze of irrigation lines, gas lines, pipes serving the in-ground pool, and the pool deck area. Once the breaks were exposed, they repaired the lines quickly and pressure-tested the repairs. When the city engineer continued delaying final inspection, Will's Plumbing persisted in arranging final close out of the excavation. Once all work was approved by the city, Will's crew filled the tunnel and cleaned up the debris. The master bathroom is now in working order and household harmony is restored.