He followed the dialysis supply line—blue PEX with a certified medical stamp. Clean. Professional. Then, twenty feet later, the blue line stopped. Someone had spliced in a twelve-foot section of —the kind used for standard commercial drains and vents, never for medical water.
That got his attention. Dialysis water is ultrapure, aggressively corrosive, and runs through specialized plastic or stainless lines. If someone had tied a standard copper or iron commercial line into that loop as a patch job, it would fail. Spectacularly. p2 - commercial plumbing inspector
Getting there required a ladder, a keycard, and squeezing past ductwork wrapped in old asbestos-label tape (still intact, thank God). Leo clicked on his inspection light. The space smelled of bleach, stale air, and something else: ozone . That meant arcing electricity or a pinhole leak spraying onto a motor. He followed the dialysis supply line—blue PEX with