I've always assumed the drum of road salt that's staged on Alpine in the winter months is a city thing. If it is, could you check with whoever came to pick it up a few days ago and ask why Alpine was covered in salt afterwards? It's still there, and reaches down onto Maple - it looks like someone just decided to get rid of a bunch of salt by dumping it.
If the residents report above normal water usage, it may be because a contractor just opened the faucet outside full blast and got back in her car. Outside a sign says gutters but doesn't look like a gutter truck. White minivan