Every four days, Steve shouldered a large jug of water and carried it to a building behind the pharmacy. The customer was an older woman, perhaps in her seventies, who lived alone in a dark, sparse and tarnished apartment. A single light bulb hung from the ceiling. The wall paper was stained and peeling. The shades were drawn, and the room was shadowy. Steve would deliver the jug, receive the payment, thank the woman and leave.