Why Is My Water Bill Suddenly So High?

Common Causes of a Water Bill Spike

A running toilet is one of the most common culprits, sometimes wasting hundreds of gallons per day without an obvious visible sign.

Dripping faucets, irrigation system leaks, and hidden slab or underground service line leaks are other frequent causes.

How to Narrow Down the Source

Check your water meter before and after a period with no water use in the home — if it moves, water is flowing somewhere.

Listen for running water sounds, check toilets for silent leaks using food coloring in the tank, and inspect visible fixtures for drips.

When to Call a Plumber

If you cannot identify an obvious cause, a licensed plumber can use professional leak detection equipment to locate hidden leaks quickly and accurately.