Opening your water bill and seeing a number that's double or triple your normal amount is a sinking feeling. Many Evansville homeowners assume it's a rate increase or a billing error — but more often than not, the culprit is a hidden leak. Evansville's water utility, through the Indiana American Water system, bills based on actual usage. If your bill spikes, water is going somewhere it shouldn't be.
What's Normal for Evansville Households?
A typical family of four in Evansville uses about 10,000 to 12,000 gallons per month. In summer, that number rises with lawn watering and pool filling. In winter, usage should drop significantly. If your winter bill is as high as your summer bill, something is wrong.
Compare your current bill to the same month last year. A 20% increase could be a minor leak. A 50% or higher increase likely points to a significant problem — possibly an underground service line leak or a running toilet.
The Most Common Hidden Leak Culprits
Running Toilets
A running toilet is the number one cause of high water bills, and it's often silent. A flapper valve that doesn't seal properly can waste 200 gallons per day — that's 6,000 gallons a month. Add a few drops of food coloring to your toilet tank and wait 15 minutes. If color appears in the bowl without flushing, you have a leak.
Underground Service Line Leaks
The water line between the street meter and your home is your responsibility as the homeowner. In older Evansville neighborhoods like Jacobsville, Stringtown, and the near North Side, these lines are often decades old and made of galvanized steel or polybutylene — both prone to failure. An underground leak may not surface visually, especially in sandy soil, but it wastes enormous amounts of water.
Slab Leaks
If your home is built on a concrete slab, a leak in the water lines beneath the slab can go undetected for months. Signs include warm spots on the floor, the sound of running water when nothing is on, and cracks in walls or flooring. Slab leaks are serious and require professional detection equipment to locate.
Irrigation System Leaks
If you have an in-ground sprinkler system, a cracked pipe or broken sprinkler head can waste water around the clock — even when the system is off. Many irrigation leaks occur at the valve box or where pipes connect to zones. Check your yard for unusually green or soggy patches.
Water Heater Leaks
Your water heater can develop slow leaks from the tank or supply connections. Check the pan underneath and look for corrosion or water stains on the platform.
How to Confirm a Leak
Do the meter test: Turn off all water in the house, check the meter, wait 30 minutes, then check again. If the meter moved, you have a leak. For underground leaks, turn off the main shutoff valve inside your home and check the meter — if it's still moving, the leak is between the meter and your home.
What to Do Next
If you've confirmed a leak but can't find it, call a professional leak detection service. They use thermal imaging, acoustic equipment, and video pipe inspection to pinpoint leaks without tearing up walls or floors. The detection cost (typically $200–$500 in Evansville) is far less than the cost of ongoing water waste and potential structural damage.
Will the Water Company Adjust My Bill?
Indiana American Water may offer leak adjustments if you can prove the leak was repaired. You'll need to provide documentation of the repair and sometimes a licensed plumber's invoice. It's worth asking — adjustments can cover a significant portion of the excess charges.
Don't Let a Leak Drain Your Budget
A high water bill is your home's way of telling you something is wrong. Investigate immediately — every day you wait, more water (and money) goes down the drain. Contact a local leak detection professional in Evansville to find and fix the problem fast.