Our condo's (12 units, 2 buildings) water usage went from $300 to $3000 in a few months. We don't have separate water shutoffs to test each unit. Nobody's reporting any visible leaks. Any idea how to proceed? We are going to go bankrupt at this rate.
I seriously doubt that this is a small-scale leak like a running toilet or a dripping faucet. If a 12-unit water meter is reporting 10x the normal usage, that's like 100+ apartments' worth of water that's unaccounted for. That would be hundreds of thousands of gallons of water per month. There's no way it's just dribbling inside some wall.
(I assume this isn't something seasonal like an irrigation system for a golf course, or filling up swimming pools...?)
My guess is that either your water meter is broken or there is a serious break in your water main. Either way I could call the water company immediately.
(You might also double-check the bills to make sure you're really being billed for a ton of water and not something else like equipment fees or late payment charges. The bill should tell you how much water you're being charged for, usually measured in hundred cubic feet, "HCF".)