Streamlined Plumbing Field Guide · local guide

High Water Bill, No Visible Leak: The Meter Test, and Why the Calendar Is Against You

A doubled bill with no wet spot is usually a leak the ground swallowed. The meter test that proves it, where these leaks hide on slab homes, and why waiting a cycle can cost you the adjustment.

By Brandon ByrdOwner · Licensed Master Plumber
November 9, 2026 · 8 min read
Close-up of an analog water meter dial inside an open concrete meter box

Shut off every fixture in the house, then go out to the meter and watch the low-flow indicator — the small triangle, star, or red dial that turns on almost no flow. If it is moving with nothing running inside, water is leaving your meter and going somewhere. That is the whole test, it takes ten minutes, and it is worth doing today rather than next week, because several Baldwin County utilities tie leak relief to the billing cycle the leak was reported in.

The meter self-test, in order

Do this before you call anybody, including me. It converts an argument about a bill into a measurement.

  1. Shut the house down
    Every faucet off. Washing machine and dishwasher idle. Ice maker off at the valve. Irrigation controller off — not just between cycles, off. Anyone showering, stop them. A single running fixture invalidates the whole test.
  2. Open the meter box
    It is usually a concrete or plastic lid at the property line, near the street or the easement. Lift it carefully; wasps and fire ants like meter boxes on the Eastern Shore, and so do snakes on the wooded lots.
  3. Find the low-flow indicator
    Most residential meters have a small triangle, star, or red pinwheel separate from the main odometer. It is geared to move on flow far too small to turn the big dial. That sensitivity is the entire point of it.
  4. Watch it for ten minutes
    Not a glance. Ten minutes. A slow leak moves that indicator in a crawl, and a two-second look tells you nothing. If it turns at all, you have flow with nothing on.
  5. Take two odometer readings
    Photograph the full reading, wait an hour with no water use, photograph it again. The difference over a known interval is a leak rate, and a number beats an impression when you are talking to a billing department.

If the indicator sits perfectly still for ten minutes, the leak is either intermittent or it is upstream of the meter, which is the utility's pipe rather than yours. Both are worth reporting rather than solving alone.

Where these leaks actually hide

Once the meter says water is moving, the question is where. Four places account for most of what I find on this side of the bay.

The toilet. It is first because it is the most common and the least visible. A flapper that has gone soft and lost its seal lets water slip from tank to bowl continuously, and the refill valve tops the tank back up so quietly that nobody hears it. Riviera Utilities publishes the standard test on its own water service page — food coloring in the tank, no flushing, check the bowl — and puts the loss at up to 100 gallons a day from one of these. Color in the bowl means the flapper is passing water. That is a parts-level fix, covered in replacing a flapper and fill valve, and it is toilet repair when the seat itself has pitted.

Irrigation. A cracked lateral or a valve that fails to close fully will run into sandy soil and never puddle. Irrigation is also the leak most likely to be missed by the meter test, because a controller that runs at 4 a.m. will show you a perfectly still indicator at noon — which is how a second home in Point Clear can run a zone into the ground for a whole season with nobody in the house to notice. If the house is on a shared meter with the yard, turn the irrigation main off at its own valve for a full billing week and compare.

The buried run between the meter and the house. This is the stretch nobody thinks about: your service line, your responsibility, sitting in wet coastal soil and often crossing under a driveway. A leak here surfaces as a soft or unusually green strip, or it never surfaces at all. It is ordinary water line repair once located.

Under the slab. An older raised cottage in the Fruit and Nut District and a newer house out along Greeno Road do not fail the same way, and the difference is where the pipe lives. On slab-on-grade construction, the supply lines run in or beneath the concrete. Water escaping a pressurized line down there moves sideways through sand and fill long before it comes up through four inches of slab. The tells are a warm patch of floor over a hot-water line, a hiss when the house is completely quiet, or a water heater running more than it should. How that gets pinpointed without opening the floor first is the subject of how a slab leak is located, and the term itself is in the glossary.

Why does the clock matter?

Because relief for a high bill is not a courtesy that waits for you. It is a written policy, it varies by utility, and more than one of them is measured in billing cycles.

Riviera Utilities, which serves Foley and the south end of the county, now governs this with a standalone Water Leak Adjustment Policy dated 12 August 2025, which supersedes section 4.7 of its 2024 policy manual. Adjustments due to leaks are "limited to once every 24 months and only for leaks reported during the current billing cycle," and the policy separately excludes any leak occurring more than two billing periods. The one-week grace period some readers will remember is 2024-manual language and does not appear in the 2025 document.

Two further clauses in that policy change how the list above should be read. A leak only qualifies if the month's consumption was greater than three times the average monthly consumption during the previous 12 months and greater than 10,000 gallons in a single billing cycle — both, not either. And the policy does not apply to a leaking toilet, spigot, faucet, garden hose or cross connection, to pool or spa filling and repairs, or to landscaping and irrigation-system repairs. Two of the four places I listed above are named exclusions. Finding them still saves you money every month they would otherwise run; it just will not be Riviera's money. The full clause-by-clause reading is in Riviera's one-adjustment-every-24-months rule.

Gulf Shores Utilities' rates and procedures handbook is equally direct on timing: "Only most recent month's billing and current usage will be considered for adjustment," with a maximum of one adjustment per twelve months.

Daphne Utilities allows one leak adjustment in any twelve-month period and requires documentation that a repair was performed.

The practical translation is the same in all three cases. The bill that shows up is not the start of a negotiation you can open at your convenience. It is the start of a countdown. The full comparison, utility by utility with the language quoted, is in the Baldwin County leak adjustment policies reference.

What the paperwork has to show

Read the published policies side by side and one requirement is common to all of them: proof that the leak was fixed, not proof that it existed.

Daphne Utilities' leak adjustment form states that all adjustments must have supporting documentation where a repair was performed, such as a receipt or plumber's invoice, and asks for the date the leak was repaired. Riviera's 2025 policy accepts a plumber's invoice outlining the location, the repairs performed and the date of completion; or a receipt for parts together with photos of the leak and the repair; or a Riviera Utilities employee who witnessed a leak. Gulf Shores' adjustment application asks you to upload or email copies of receipts showing repairs that were completed.

So the file you want to be building, from the day the bill lands, is short and specific:

  • The meter photographs, with the odometer readings and the times.
  • Dated photographs of the leak itself, before it is repaired and while it is open.
  • The repair invoice, with the date of the repair and what was actually done on it.

That third item is the one people cannot reconstruct after the fact, and it is the one every policy names. Keep it.

Before you spend money chasing it

Two things are worth doing in the meantime.

Put a number on the loss. If your two odometer readings gave you a rate, the water waste calculator turns it into gallons and gives you something concrete to weigh against the cost of finding it. A slow drip and a failed slab line are different orders of magnitude, and the response should be proportional.

And do not tear anything open on a hunch. A damp spot on a wall is not a map, and a hidden leak that has surfaced in one room did not necessarily start there. Locating comes first — that is what leak detection is for — because the cost of opening the wrong wall is paid twice.

If water is actively running and you cannot stop it, that is a different conversation and it belongs with emergency plumbing rather than a billing question.

(251) 423-7654, any hour. Brandon Byrd, Alabama Master Plumber MP-4462, Fairhope.


Sources. Riviera Utilities adjustment terms — the once-every-24-months limit, the current-billing-cycle requirement, the two consumption thresholds, the three accepted proofs and the exclusion list: Riviera Utilities Water Leak Adjustment Policy, 8/12/2025 (rivierautilities.com/pdf/water-leak-adjustment-policy-2025.pdf), the current document on this subject. It supersedes §4.7 Abatement of Water and Sewer Bills in the Water Department Policy Manual, May 1, 2024 (rivierautilities.com/pdf/water-policy-manual-2024-05.pdf), which is where the one-week grace period appears and where the adjusted-bill floor was twice rather than three times the twelve-month average. The 100-gallons-a-day figure and the food-coloring toilet test: Riviera Utilities water service page (rivierautilities.com/services/water/). Gulf Shores eligibility and the one-adjustment-per-twelve-months limit: The Utilities Board of the City of Gulf Shores, Rates and Procedures Handbook, May 2026, §12 Adjustment Policy (gulfshoresutilities.com); receipts-for-completed-repairs requirement from its adjustment application (gulfshoresutilities.com/forms/adjustment/). Daphne Utilities' twelve-month limit, documentation requirement and repair-date field: Daphne Utilities leak adjustment page (daphneutilities.com/leak-adjustment-form/). Policies change; the utility's own current page governs, not this one.

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Questions. Answered.

  • How do I test my water meter for a leak?
    Turn off every fixture and appliance that uses water, including the ice maker and any irrigation controller, then open the meter box lid and watch the low-flow indicator — the small triangle, star, or red dial that responds to almost no flow. If it moves at all over ten minutes with nothing running, water is passing through the meter and leaving somewhere between there and your fixtures. Write down the full odometer reading, wait an hour without using water, and read it again. Two readings and a time stamp are worth more than a memory.
  • Can a leak be under a concrete slab with nothing showing inside?
    Yes, and that is the normal presentation on the Gulf Coast. A pressurized supply line running under a slab can lose water into sand and fill for a long time before anything surfaces, because the water follows the path of least resistance sideways rather than up through four inches of concrete. The tells are subtle: a warm patch of floor on a hot-water line, a faint hiss when the house is silent, a water heater cycling more than it used to, or a meter that never fully stops.
  • Does a running toilet really move enough water to double a bill?
    It can. Riviera Utilities publishes the food-coloring test on its own water page and puts the loss at up to 100 gallons a day from a single otherwise-invisible toilet leak. A flapper that has gone soft lets water slip past continuously without ever triggering the refill sound people listen for, so nobody in the house hears anything. Put dye in the tank, do not flush, and check the bowl twenty minutes later. Color in the bowl means the flapper is passing water.
  • How long do I have to report a leak before it affects an adjustment?
    It depends on the utility, and the windows are shorter than most people assume. Riviera Utilities' current policy, dated 12 August 2025, limits adjustments to once every 24 months and only to leaks reported during the current billing cycle, and it excludes any leak occurring more than two billing periods. Gulf Shores Utilities' handbook says only the most recent month's billing and current usage will be considered. Neither one is a decision you can defer to next month's statement without cost.
  • What documentation will the utility want?
    Every published policy I have read in this county wants evidence that a repair actually happened, not just that a leak existed. Daphne Utilities requires supporting documentation of a completed repair such as a receipt or plumber's invoice. Riviera's 2025 policy accepts a plumber's invoice giving the location, repairs performed and completion date; or a parts receipt plus photos of the leak and the repair; or one of its own employees having witnessed a leak. Gulf Shores asks you to upload or email copies of receipts showing repairs that were completed. Keep the invoice, keep the dated photos, and keep them together.
Related resources

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Pages on the site that connect to this article — the plumbing work it covers, the towns it applies to, and the natural next step if you're ready to get someone out.

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  • Repipe Risk & Cost Estimator

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  • Water-Waste Calculator

    Turns a drip or a running toilet into gallons and dollars a year, using EPA WaterSense math.

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