Ruth read the comments over my shoulder. "Do not respond to every one of them," she said. "You cannot correct two hundred people one by one while the water is still off."
"Some of those people have my number because Dad gave it to them years ago."
"And if they need help, they can call it. A comment section isn't an emergency service."
By noon, an association letter arrived demanding that I restore water immediately and pay five hundred dollars a day for unauthorized interference with what it called community infrastructure. The notice threatened escalating penalties and legal action if the valve remained closed. I placed it in the file beside my unread invoices, which had never once inspired Diane to send a letter with comparable urgency. The association was willing to charge me for protecting its customers from water it could not guarantee safe.
That afternoon, one of my longtime acquaintances drove to the farm and struck the side of my pickup with the flat of his hand. His name was Paul Whitaker, and I had helped him move a broken washing machine years before he could afford a replacement. Now his eyes were red from lack of sleep and his mouth was set with fear. "My wife washed our little girl with bottled water this morning," he said. "Do you know what that was like?"
"I am sorry," I told him. "I bought water myself, and I am working to find the problem."
"Then turn the system back on while you work."
"I can't."
"You mean you won't."
"I mean I won't risk sending whatever entered that system into your daughter's bath. You can be angry at me, Paul, but please don't use the tap until we know what's in it."
He stood beside the truck breathing hard. Then he asked the question I had been avoiding since the first sample: "What got into the water?" I told him I did not know yet, and his anger changed shape. He was no longer only furious at an absent service. He was afraid of a danger I could describe but not locate, and fear without a visible cause looks very much like suspicion.
Paul left without apologizing. I watched his truck disappear along the lane and understood that a graph in my logbook was not going to be enough to restore trust. I needed a source, a physical location, a reason the readings had changed so suddenly. If somebody had altered the distribution system, I needed to find the alteration before it could be covered over or repeated.
On Thursday morning, I opened the old pump house cabinet and took my father's valve map off its nail. The paper had softened inside its oilcloth cover, and the blue ink was fading at the creases. Dad drew it in 1981 after the county added a second distribution loop, walking the pipes with a tape measure and marking each valve box, junction, service branch, and elevation change. He trusted maps he could verify with his boots more than plans drawn from an office chair.