Hidden water leaks can cost thousands if left untreated
Many homeowners don’t realise they have a plumbing leak until damage is already done.
A small leak behind a wall, under a slab or in the yard can waste water, increase bills and lead to mould, structural damage and insurance claims.
At Moriarty Plumbing & Gasfitting, we regularly find hidden leaks that started as something small but grew into major repairs.
Knowing the early signs can save you money.
🚩 10 signs you may have a hidden water leak
1. Your water bill suddenly increases
If usage hasn’t changed, a leak is often the cause.
2. Damp patches on walls or ceilings
Even small discolouration can indicate moisture behind surfaces.
3. Musty smells
Mould thrives where leaks exist.
4. Low water pressure
Water escaping somewhere else affects flow.
5. Constant sound of running water
Especially at night when the house is quiet.
6. Cracks in tiles or flooring lifting
Common with slab leaks.
7. Hot water running out faster than normal
Could indicate a hot line leak.
8. Wet areas in the yard
Often caused by underground pipe damage.
9. Mould appearing repeatedly
Treating mould without fixing the leak won’t solve the problem.
10. Your water meter moves when everything is off
A classic indicator of a leak.
Why hidden leaks happen
Leaks can be caused by:
• Ageing pipework
• Ground movement
• Poor previous plumbing work
• Tree root intrusion
• Renovation changes
• High water pressure
Homes on the Gold Coast — particularly older properties — are more prone.
When to call a leak detection plumber
If you notice any of these signs, early investigation is critical.
Our team uses professional leak detection methods to locate the problem with minimal damage.
We regularly assist:
• Homeowners
• Property managers
• Insurance claims
• Renovation projects
Planning a bathroom renovation? Leaks are often discovered first
Many hidden leaks are found when walls are opened during renovations. This process is called a rough in.
If you’re considering updating your bathroom, addressing plumbing early prevents costly surprises.
👉 Learn more about renovation plumbing through our sister company Moriarty Bathrooms.
Don’t ignore small signs
The earlier a leak is found, the easier it is to fix.
A simple repair today can prevent structural work tomorrow.
📞 Need leak detection on the Gold Coast?
Moriarty Plumbing & Gasfitting provides fast, reliable leak detection and repairs for homes and rental properties.
Call 0403 066 414 or contact us online to book.
