Hi All - I recieved this months water bill, and our usage for a family of 4 went from 4000/month on average to 11000 gallons. I inquired with the municipal water service, and they advised to check my toilets for leaks. I dropped some food coloring in the tanks and let it sit for a couple hours, no leaks. There are no visible leaks or pools anywhere in the house from other sources aside from a couple drippy faucets I've been meaning to replace gaskets/washers in. We started potty training my son, and have been flushing the toilets more, but I can't imagine we did that enough to warrant 7000 gallons. I also replaced the ball cock in one of my toilets recently, but that appears to be working fine.
Does anyone have any ideas of where leaks can occur that aren't obvious?