Webleaks are a major cause of high water bills. Common culprits include running toilets, dripping faucets, and hidden pipe leaks. A single leaky toilet can waste up to 200. If you notice a sudden spike in your water consumption and utility bills without changing your usage habits, it might be due to a leaking faucet. Keep a close eye on your monthly water bills. Any sudden spike without an obvious reason could indicate a leak. Webignoring a leaky faucet can lead to higher water bills and potential water damage. A faucet that drips once per second can waste over 3,000 gallons of water a.