If your Gilbert water bill jumped noticeably with no real change in how much you are using, the most likely explanation is a leak somewhere on your property, and a five-minute meter test will tell you whether that is true before you spend a dollar on detection. Run the test first, because it costs nothing and settles the question immediately.
The five-minute meter test
How to check for a leak yourself
In order:
- Make sure every fixture inside and outside the house is off, including irrigation
- Find your water meter, usually near the street or front hose bib area
- Note the reading, or watch for the small leak-indicator dial if your meter has one
- Wait 15 to 30 minutes without using any water
- Check the meter again: if it moved, or the leak indicator spun, water is escaping somewhere
What the season tells you
In Gilbert, a summer bill spike is as likely to be the irrigation system or a pool line as it is indoor plumbing, since outdoor watering runs heaviest exactly when a bill jump gets noticed. A winter bill spike, on the other hand, more often points to an indoor issue, since irrigation is typically scaled back. Isolating the irrigation manifold from the house supply during the meter test tells you which side is actually losing water, and it is a step worth doing before assuming the worst about the house itself.
| Bill increase | Likely cause | Next step |
|---|---|---|
| Slight, gradual | Seasonal use change, or a very small drip | Watch it a cycle |
| Moderate, sudden | Running toilet or dripping fixture | Check toilets and faucets first |
| Large, sudden | Hidden supply leak, often a slab leak | Meter test, then professional detection |
| Large, only in summer | Irrigation or pool line | Isolate the irrigation manifold |
The cheap checks before you call anyone
A running toilet is the most common cause of a moderate bill jump and the cheapest to rule out: drop a little food coloring in the tank and check the bowl after ten minutes without flushing. If color appears, the flapper is leaking. Also check for a dripping faucet or an outdoor hose bib that was left slightly open, since Gilbert's hard water often makes fixtures harder to fully close over time.
If the meter confirms water is moving with everything off, and the simple checks come up empty, that is when
earns its cost, because at that point the leak is hidden, likely under the slab or in a wall, and needs acoustic or thermal equipment to pinpoint rather than guesswork.
Reading your actual water bill correctly
Most Gilbert water bills show usage in hundreds of cubic feet or in gallons, and comparing the same billing period year over year is far more useful than comparing consecutive months, since summer irrigation naturally raises usage regardless of leaks. If your July bill this year is dramatically higher than last July, with no new pool, no new landscaping and no change in household size, that comparison is a stronger leak signal than a simple month-to-month jump that summer heat alone could explain.
It is also worth checking whether your water provider offers usage history online, since many utilities let you view daily or hourly consumption. A leak often shows up as a flat, continuous baseline of usage overnight, when nobody should be using any water at all, which is a very different pattern from the normal spikes and dips of a household's actual water use throughout the day.
Dealing with this in Gilbert right now?
Skip the rest of this guide and call. We answer 24 hours for anything urgent.
Call (480) 806-2944What to do while you wait for detection
If your meter test confirms a leak but you are waiting for a detection appointment, there is not much to do to stop the loss beyond identifying whether it is safe to simply monitor it or whether you should shut off the main entirely. A leak losing a small, steady amount is usually fine to monitor for a few days until detection can pinpoint it; anything that seems to be worsening, or that you can hear clearly through a wall, is worth shutting the main off and using water sparingly with it back on briefly as needed until someone can locate the source.
When to loop in your water utility
The Town of Gilbert's water department can sometimes provide additional usage history or confirm whether a meter itself is functioning correctly, which is a useful parallel step alongside your own detection efforts, particularly if you suspect the meter reading itself rather than an actual leak. Some municipal utilities also offer a courtesy leak adjustment on a bill if a leak is documented and repaired promptly, which is worth asking about once the leak is found and fixed, since it can meaningfully offset the unusual bill the leak caused in the first place.
A realistic timeline from suspicion to resolution
For homeowners wondering what the actual process looks like once a bill spike raises suspicion, it typically unfolds over a short span: the meter test itself takes half an hour including the wait period, the simple fixture checks for toilets and faucets take another fifteen minutes, and if those come up empty, scheduling a professional detection visit usually happens within a day or two. The detection visit itself, using acoustic and thermal equipment, generally takes one to two hours depending on the home's size and how quickly the leak is isolated. From first noticing an odd bill to having a confirmed location for repair, most Gilbert homeowners move through this whole process within about a week, which is a manageable timeline for something that initially feels like an open-ended mystery.
Questions about why is my water bill so high in gilbert
How much water does a running toilet actually waste?
More than most people expect, often hundreds of gallons a day depending on the leak's severity, which is enough to meaningfully move a monthly bill. It is one of the most common and cheapest-to-fix causes of a bill spike, and worth ruling out with the food-coloring test before assuming a hidden slab leak.
My meter moved during the test. What now?
That confirms water is escaping somewhere on your property with everything off, which points to a real leak rather than a usage change. The next step is narrowing down where, starting with easy checks like toilets and hose bibs, then moving to
if those come up clean.
Could it be the water meter itself malfunctioning?
It happens occasionally but is uncommon compared to an actual leak. If your own meter test and simple fixture checks both point to water moving somewhere, it is worth investigating the plumbing before assuming the meter is at fault, since that is the much more common explanation.
Is a slab leak always the cause of a big bill jump?
Not always, but it is one of the more expensive possibilities and worth ruling in or out. A warm patch on the floor or a hot-water pressure drop alongside the bill jump makes a
more likely; without those signs, irrigation or a running toilet are still the more common culprits.
Meter confirms a leak but can't find it?
That is exactly what professional detection is for. Call and describe what the test showed.
Call (480) 806-2944