Your water bill arrived and it's noticeably higher than last month. You haven't been watering the garden more. Nobody's been home. There's no obvious explanation — and that's exactly how a hidden water leak announces itself.

The frustrating thing about hidden leaks is that by the time you see the evidence — a stain on the ceiling, warped floorboards, mould behind the vanity — the leak has often been running for weeks or months. In Yeppoon's humid coastal climate, that timeline is even shorter. Moisture finds its way into everything here.

Here are five signs that might mean water is leaking somewhere in your home right now.

1. Your Water Bill Has Gone Up for No Reason

This is the one most people dismiss. "It must be the garden" or "we had people staying." Sometimes that's true. But if your bill has jumped and you can't explain it, it's worth investigating.

A dripping tap at the rate of one drop per second wastes around 10,000 litres per year. A slow slab leak — the kind you can't see or hear — can waste significantly more. The water authority won't credit your bill after the fact, so the sooner you find it, the less it costs you.

What to do: Pull out your last three bills and compare them. A consistent upward trend with no change in your habits is a red flag worth acting on.

2. You Can Hear Water Running When Everything's Off

Stand still in your home in the evening when everything is quiet. Taps off, washing machine not running, dishwasher idle. Can you hear anything that sounds like running water — a faint hiss, a drip, or a rushing sound somewhere in the walls?

That sound means water is moving somewhere it shouldn't be. In older Yeppoon homes with galvanised or copper pipes, pinhole leaks inside walls and under floors are more common than most people realise.

What to do: If you hear it, don't ignore it. A leak inside a wall will eventually soften the framework and breed mould — and that's a much bigger repair than fixing the pipe.

3. Damp Patches, Stains, or Mould in Unexpected Places

Mould in a poorly ventilated bathroom is one thing. Mould on an interior wall that has nothing to do with a shower? That's a different conversation.

Look for:

Soft or spongy patches in walls or floors near wet areas
Discolouration on walls or ceilings — brown rings or yellowish stains
Mould growth that keeps coming back even after you clean it
A musty smell in a room that shouldn't have one

In Yeppoon and Emu Park, the coastal humidity makes this worse. A slow drip inside a wall cavity will saturate the timbers and insulation quickly. If you're seeing mould in unusual places, there's a reasonable chance water is involved.

4. Low Water Pressure in Part of Your Home

If the pressure at your kitchen tap has dropped but the bathroom is fine, that's localised — and localised pressure drops often point to a leak in that section of pipe.

Pressure drops across the whole house are a different issue (could be the main supply line, a failing pressure limiting valve, or an issue at the meter). Either way, a noticeable change in your water pressure that you can't explain is worth having a plumber look at.

Capricorn Coast note: Pressure fluctuations are more common in older Yeppoon homes. Homes built before the mid-1990s often have original pipework that's past its best.

5. Your Water Meter Moves With Everything Turned Off

This is the most reliable test you can do yourself, and it costs nothing.

Turn off every tap, the washing machine, dishwasher, irrigation system — everything that uses water. Then go to your water meter (usually near the street or front boundary) and watch it.

If the dial or digital display is still moving, water is flowing somewhere in your system. That somewhere is almost certainly a leak.

How to read it: Most meters have a small red or black triangle that spins with flow. Even a tiny movement means water is escaping. Some digital meters show a flow indicator on the screen.

What Happens If You Ignore It?

In the short term: a higher water bill. In the medium term: mould, wet timber, and damaged insulation. In the long term: structural damage to your home that costs significantly more to fix than the original leak would have.

In Yeppoon specifically, the combination of humidity and older housing stock means water damage escalates faster than in dryer climates. A leak that might take a year to cause serious damage in outback Queensland can do the same damage here in six months.

When to Call a Plumber

Call a plumber if:

Your water meter is moving with everything off
You've had an unexplained bill increase two months in a row
You can hear running water but can't find the source
You have mould in a location that doesn't make sense

Modern leak detection doesn't require tearing your walls apart. LTH Plumbing uses non-invasive detection methods to find leaks under slabs and inside walls before doing any excavation or repair work.

Think you might have a hidden leak? LTH Plumbing provides professional leak detection across Yeppoon, Rockhampton, and the Capricorn Coast — using acoustic and pressure testing to pinpoint leaks without unnecessary digging. Call 0455 869 383 or get in touch.

5 Signs You Have a Hidden Water Leak — A Yeppoon Plumber's Honest Guide