Spotted this on a sidewalk in Maspeth recently. When I saw the word "Violation" on it, I decided to pick it up. It was quite enlightening.
"Dear inhabitant of Bloombergia:
You probably drank some dirty water last month, but it won't kill you. There's nothing we can do about it, but we thought we'd let you know. We're hoping it doesn't happen again. Please tell everyone you know because we don't have the staff, time or money to do a proper notification.
Why not just word it plainly?