Not all leaks are obvious. A slow leak behind a wall or under the slab can cause serious damage — and a huge water bill — long before you spot a drip.

Warning signs to watch for

• A water bill that jumps with no change in usage.
• The sound of running water when all taps are off.
• Damp, warm, or discoloured patches on walls, floors, or ceilings.
• A musty smell or mould appearing in one area.
• Reduced water pressure.
• Cracked or lifting tiles and paint.
• Unusually green patches in the garden over a pipe run.

A simple test

Turn off every tap and water-using appliance, then check your water meter. If it's still ticking over, you likely have a leak.

Find it without the damage

Professional leak detection uses specialised equipment to pinpoint hidden leaks with no unnecessary digging. A plumber can locate and fix it before it costs you a fortune, right across Sydney.

The most expensive plumbing emergencies are often the most preventable. A bit of care and early attention stops small issues becoming floods and big bills.

Simple prevention habits

• Never pour fat, oil, or grease down the sink.
• Only flush the "3 Ps" — pee, poo, and paper.
• Use drain strainers in sinks and showers.
• Don't ignore slow drains, small leaks, or drips — they get worse.

Seasonal checks

• Clear gutters and downpipes before storm season.
• Check for leaks under sinks and around the hot water system.
• Know where your main water shut-off valve is.

Book a plumbing check-up

A periodic inspection catches worn parts, small leaks, and ageing systems before they fail. It's cheap insurance against a 2am emergency — and a plumber can do it in one visit across Sydney.