High water bill leak detection: what to know in Arizona
A leak you cannot see shows up only in the number. A leak of a few gallons an hour can add a noticeable amount over a month.
The same rise can come from pool top-ups, irrigation, guests or seasonal use, so the bill alone is not proof of a slab leak.
Slab leak signs people notice
Earlier leaks, where they were and what was done, help the technician plan.
Warm Tile Underfoot? Call NowWhy Arizona homes get slab leaks
In Arizona, summer bills rise for good reasons: pools, cooling and landscape watering. That makes a hidden leak easier to miss and harder to confirm from the bill alone.
Comparing the same month across years, and checking the meter, is more useful than looking at a single bill.
What to check
Compare this bill to the same month last year. Do the meter check with everything off, then with the irrigation controller off. Note the pool level over a day.
If the meter still moves, call. Tell the technician what you ruled out.
What a leak detection technician does
The service line is tested first to separate the yard from the house. Inside, lines are isolated one at a time, and acoustic and thermal equipment locate the leak once one line is shown to be losing pressure.
You will hear plainly whether the leak is under the slab or elsewhere.
Tell the dispatcher the year the home was built and whether there is a pool.
Another Pinhole? Call NowReading the bill before you call
A bill is a delayed, rounded meter reading. It tells you that more water was used, not where. Compare the last few bills, and compare the same month in the previous year, since summer use in Arizona is higher.
Look at what changed. A new plant bed on a drip system, a pool refill, houseguests, an evaporative cooler running more and a stuck toilet can each move the bill without any leak.
The check with the meter does what the bill cannot. With the house quiet and the irrigation off, a moving meter means water is going somewhere that is not in use.
If it moves, the call is worth making and the numbers you took help.
Reading the bill itself
The total on a water bill mixes usage with fixed charges and other items. To judge whether something has changed, look at the usage figure and compare it to the same months in earlier years. Summer use in Arizona is often much higher than winter use, so compare like with like.
A single high bill can have an ordinary cause: guests, a pool refill, a new irrigation schedule. Several high bills in a row with no change at home point more strongly toward a leak.
Billing periods rarely start on the day a leak begins. A leak can show as a partial jump in one bill and a full jump in the next.
We do not speak for any water provider or comment on their billing. If you have questions about the bill itself, ask the provider.
From bill to meter
The meter is the faster test. With everything off inside and out, watch the leak indicator for five minutes. If it moves, water is leaving the system now.
Switch the irrigation controller off and read again. If the meter stops, the yard is the more likely source. If it keeps moving, the house side is.
If there is a pool, mark the waterline and check it a day later. A falling level with the auto-fill feeding it can explain a high bill on its own.
Write down each result and call. The dispatcher will ask for them.
When the meter is still
A still meter with a high bill can mean the leak is intermittent, such as a toilet that runs now and then or irrigation that comes on at night. Repeat the check at different times.
It can also mean the extra use has stopped. A leak that has been repaired, a pool that has been topped up or a guest who has left will all show on the bill after the fact.
If the next bill is high again and the meter still seems quiet, read it last thing at night and first thing in the morning with nothing used in between.
The technician can do a full check if the picture is unclear.
How much water a leak can use
Small leaks add up because they run all day and all night. A slow drip at a fixture is easy to ignore, but a steady leak under a slab can lose far more, because the line is under pressure the whole time.
We do not quote figures for how much a leak costs or how much water it uses, because every home and every leak is different. What matters is whether water is leaving when it should not be.
The meter answers that question directly. A still indicator with everything off means no water is leaving now. A moving one means it is.
If you want to know how much is leaving, note the main dial reading before bed and again in the morning with nothing used. The difference is the overnight loss.
Bring that figure to the call. It helps the technician judge how urgent the visit is.
When a bill seems wrong but there is no leak
Sometimes the meter is still, the irrigation is off, the pool holds its level and the house has no signs of a leak, but the bill is still high. In that case the extra use may have been temporary, or the cause may lie with the bill itself.
Guests, a pool refill, a new plant bed or a change in the irrigation schedule can all add up over a billing period.
If you have questions about the bill itself, ask the water provider. We do not speak for providers or comment on their billing.
Keep doing the meter check every week or two. If the indicator starts moving, call.
If the next bill is normal, the extra use was likely temporary.
Questions the dispatcher asks
The dispatcher asks for the meter result with everything off, and again with the irrigation off.
They ask whether there is a pool and what the waterline check showed.
They ask the year the home was built and about any earlier leaks.
They ask whether there are other signs: a warm floor, a sound or damp.
Having these ready makes the call quicker.
A worked example
An owner notices the usage figure on the last three bills is higher than the same months last year. Nothing has changed at home.
With everything off, the meter moves. With the irrigation controller off, it still moves. The pool, marked at the waterline, holds overnight.
The owner calls with those results. The technician confirms them, isolates the house from the service line and finds the house side losing water. Testing narrows it to the hot side, and imaging shows a faint warm band under the hallway.
The spot is marked and the options explained. After the repair, the meter is read with everything off, and the next bill shows the usage figure back in line with earlier years.
The contractor gives you a quote, and nothing starts until you agree to it.
Ask About Reroute OptionsQuestions about a high water bill
Does a leak change how I should read my bill?
Compare the bill with a meter reading taken with everything off, and tell us both. A bill alone cannot show where water is going.
How much does a leak add to the bill?
It depends on the leak and your rates. We do not quote figures.
The bill rose but the meter is still.
Then a constant leak is unlikely. Check use patterns and call if other signs appear.
Do the contractors fix irrigation if that is the cause?
No. Slab leaks only. You will know before anyone is sent out.
How much of a rise is a leak?
There is no fixed figure. A rise with no change in habits is worth checking.
Should I ask for a leak adjustment?
That is a matter for your provider and is not covered here. We can tell you what the technician found, which you can take to them.
Can a leak be small and still matter?
Yes. A slow leak can run for months.
Does a bill tell me where the leak is?
No. A meter test and detection do.
Should I fix the toilet first?
Check it. A quick look can save a call.