Plumbing advice
Why Your Austell Water Bill Doubled With No Visible Leak
Work through this in order and you will either find the problem yourself or hand a plumber a diagnosis instead of a mystery.
Water still running now?
If you can hear water with everything off, this is not a billing question. Close the main and call.
- FIRST TEST
- Free, takes ten minutes.
- MOST COMMON CAUSE
- A toilet flapper.
- WORST CASE
- Underground yard line.
The short answer
A doubled bill with nothing visible almost always means one of four things: a toilet passing water continuously, an underground supply line between the meter and the house, an irrigation zone stuck open, or a leak under a slab. In that order of likelihood.
You can narrow it to one of those four yourself in about half an hour without any equipment, and doing so before calling anybody is worth real money. A plumber arriving to hear that the meter still moves with the main closed already knows to look at the yard line rather than under the house.
Test one: the meter with everything off
This is the test that separates a plumbing problem from a billing dispute, and it costs nothing.
In Austell the meter sits in a box near the street edge of the property. Lift the lid, find the dial, and look for the small low flow indicator, usually a triangle or a small wheel that spins on very low flow rates.
Turn off every tap, appliance, ice maker and irrigation controller in the house. Then watch the indicator for ten minutes without anyone using water. If it moves at all, water is leaving the system on your side of the meter.
Doing the meter test properly
That last step is the useful one. If the indicator still moves with your main closed, the leak is in the service line between the meter and the house.
- Turn off the ice maker as well as the taps, since it refills silently.
- Make sure the irrigation controller is not mid cycle.
- Note the exact meter reading, then check it again an hour later.
- Watch the low flow indicator rather than the main dial, which barely moves on a small leak.
- Repeat with the main shutoff closed, which is the step most people skip.
Test two: rule the toilets out with food colouring
A toilet that passes water from tank to bowl continuously is the single most common cause of an unexplained bill, and it is completely silent in many cases.
Put several drops of food colouring into the tank of each toilet. Do not flush. Come back in thirty minutes and look in the bowl. Colour in the bowl means that flapper is passing, and a flapper is one of the cheapest parts in domestic plumbing.
Do every toilet in the house, including any in a rarely used bathroom. The one nobody uses is exactly the one nobody notices running.
| Meter with house off | Meter with main closed | Colour test | What it means |
|---|---|---|---|
| Still. | Still. | Clear. | No leak on your side, so query the read with the utility. |
| Moving. | Still. | Colour appears. | A toilet is your leak, and it is a cheap fix. |
| Moving. | Still. | Clear. | A leak inside the building envelope, worth tracing properly. |
| Moving. | Moving. | Clear. | The service line between the meter and the house. |
| Moving only some days. | Still. | Clear. | Irrigation zone or a valve that sticks intermittently. |
| Still, but the bill is high. | Still. | Clear. | Seasonal usage, a filled pool, or a genuine metering question. |
Before you call anyone, check what changed. A bill that doubled in the month you filled a pool, started a garden through a dry August or had guests staying is not necessarily a leak at all. Compare against the same month last year rather than against last month.
What a hidden leak inside the house actually looks like
If the meter moves with the main open but stops when it is closed, and no toilet is passing, the leak is inside the building. Some of the signs are subtle enough that people live with them for months.
A patch of floor that is warm underfoot in a slab built house is the classic. Hot water rising through concrete warms the surface above it, which is why the first symptom of a hot line failure is frequently a floor rather than a puddle.
The others are a musty smell in one closet, paint or trim lifting along a single wall, and running water audible at night when the house is silent. A relief line dripping at the heater when nobody has used hot water belongs on the list too, though that one is usually a water heater fault rather than a hidden leak.
Why Austell houses fail in specific places
Houses built here between roughly 1978 and 1995 were commonly plumbed in grey polybutylene, which becomes brittle at its crimped fittings. Those failures tend to be sudden pinholes rather than slow weeps, so they usually announce themselves rather than hiding on a bill.
The slow, invisible version is more often original copper under a slab in a post 1970 subdivision, or a galvanized section in a pre 1960 cottage. Both are age rather than bad luck, and both are worth locating rather than living with.
When to stop testing and make the call
Three results mean the DIY stage is over. The meter still moving with the main closed, a warm patch on a slab floor, or the sound of water running with everything off.
At that point what you want is location rather than excavation. Acoustic listening and thermal imaging narrow a slab leak to close to a square foot before any concrete is opened, which is the difference between one small repair and a series of exploratory holes.
If the meter test points at the yard line instead, professional leak detection saves digging the whole run. Where the trace confirms the leak is under the concrete, the choice between a targeted repair and an overhead reroute is worth pricing both ways, which is covered on our slab leak page.
If the bill jump was dramatic, it is also reasonable to ask Austell Public Works to confirm the read before you spend anything. They can be reached on 770 944 4325. What they cannot do is locate a leak on your side of the meter, which is where the responsibility sits in this system.
One thing worth knowing about the repair
Whatever the trace finds, the repair itself is held to the Georgia State Minimum Standard Plumbing Code, which adopts the International Plumbing Code (IPC), 2018 edition, with state amendments. That governs the materials and joints used, and on a service line replacement it means a permit as well.
It is worth asking any quote whether the permit is included. A repair done properly and inspected is the version that does not raise questions when the house is next sold.
Quick answers
Common follow up questions
How much water can a running toilet actually waste?
Enough to show clearly on a monthly bill. A flapper that no longer seats passes water continuously, and because it goes straight down the drain there is nothing to see and often nothing to hear.
It is also the cheapest thing on the list to fix, which is why the colouring test is worth doing before anything else.
Can the utility tell me where my leak is?
No. The utility can confirm your meter reading and whether the meter itself is faulty, which is worth doing if the jump looks extreme. Everything from the meter to your fixtures is the property owner's responsibility.
Locating a leak on the house side is plumbing work, and it is a different job from repairing it.
Is it worth doing this in winter or waiting until spring?
Do it now. A small leak does not improve with time, and in this climate the risk is that a marginal fitting that has been weeping quietly splits properly during a hard freeze.
Locating a leak while the house is dry and the weather is mild is considerably easier than tracing one in January.
My meter moves a little even with everything off. Is a small amount normal?
No. The low flow indicator is designed to detect exactly this, and a properly closed house should show no movement at all over ten minutes.
Any consistent movement means water is leaving the system. The size of the movement tells you about the rate, not about whether there is a problem.
Found the meter moving with the house shut down?
Call and say what the meter did with the main open and with it closed. Those two answers tell a plumber where to start before arriving.