Unexplained High Water Bill? Here's Where the Leak Might Be
If your water bill has jumped significantly without any change in your household's water use, you almost certainly have a leak somewhere. The tricky part is that many of the most common leaks are invisible — hidden inside walls, under slabs, or in fixtures you don't look at closely. Here's where to start looking.
Start With the Toilet
The toilet is responsible for the majority of hidden water waste in residential homes. A faulty flapper or fill valve can leak 200 gallons or more per day — silently, without any visible water on the floor. To check, add a few drops of food colouring to the tank and wait 15 minutes without flushing. If colour appears in the bowl, you have a flapper leak. This is a simple, inexpensive repair that can make a significant difference to your bill.
Check All Faucets and Showerheads
A faucet that drips once per second wastes around 3,000 gallons per year. Walk through your home and check every tap and showerhead for drips. Don't forget outdoor hose bibs, which are often left slightly open or develop worn washers over time. Most dripping faucets are caused by worn washers or O-rings and are straightforward repairs.
Irrigation and Outdoor Lines
If you have an irrigation system, a broken head, a cracked line, or a valve that's stuck open can waste enormous amounts of water — often without any visible sign at the surface. Run each irrigation zone individually and walk the area while it's running to check for unusual wet spots, pooling water, or heads that aren't retracting properly. A plumber or irrigation specialist can pressure-test the system to identify leaks that aren't visible.
Slab Leaks: The Hidden Threat
In New Orleans, where many homes are built on slabs, a slab leak — a leak in the water supply or drain lines running beneath the concrete foundation — is a serious concern. Signs include warm spots on the floor, the sound of running water when all fixtures are off, unexplained cracks in flooring or walls, and a water meter that keeps moving even when nothing is in use. Slab leaks require professional leak detection equipment to locate and are not a DIY repair.
How To Use Your Water Meter To Confirm a Leak
Turn off all water-using appliances and fixtures in your home, then check your water meter. Note the reading and come back in 1–2 hours without using any water. If the meter has moved, you have a leak somewhere in the system. This simple test confirms whether a leak exists before you start investigating further — and it's the first thing a plumber will do when diagnosing an unexplained high water bill.
G Fox Plumbing provides professional leak detection and repair services throughout New Orleans and the surrounding parishes. If your water bill is climbing and you can't find the cause, we have the tools and experience to locate and fix it. Call (504) 920-7152 or request a quote online.
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