Death in the Water: Fantasy

Sudden death came not from above, where they had been watching carefully, but from beneath them. The cisterns that they'd been filling with rainwater went black overnight. Nobody noticed until the next morning, when the first girl to pull up a bucket of water, sleep still in her eyes, screamed and dropped her bucket to clatter against the cobblestones. Her scream convinced her that she was not still dreaming, as did the pain in her foot where she'd dropped the bucket. She ran to the head of the council and told him frantically that the water had gone bad. It took her half an hour to convince his advisors to let him see her, and another fifteen to absolutely convince him that she wasn't remembering a dream. It was only once she took her shoe off to show the bruise--

Inspiration: "Back From the Dead" - Napalm Death
Story Potential: Medium-high.
Notes: Eh. Would be a good flash fiction piece, though, I think. Just a bit of polishing and a bit of extra stuff. So yeah, the water has reverted to normal, others have taken it, and they're all rushing around to get them to stop drinking the water while people are and are being infected with whatever's going to kill them.