7 Signs You Need to Call a Plumber Today

Why “I’ll Deal With It Later” Costs You More

Plumbing problems are progressive. A pipe with a pinhole leak today is a pipe that’s fully split in six months. A drain that gurgles occasionally is usually a drain that’s building up a blockage that will eventually stop everything dead.

The Central Highlands climate doesn’t help. Emerald’s hot, dry summers followed by heavy wet-season downpours put real stress on plumbing systems pipes expand and contract, ground movement shifts underground lines, and stormwater surges test every joint and seal in your drainage network.

Waiting rarely saves money. It usually means a bigger repair, more water damage, and sometimes a full pipe replacement instead of a simple patch. If you’re seeing any of the seven signs below, it’s worth getting a licensed plumber out today, not once it becomes an emergency.

Sign 1: No Hot Water, or Hot Water That Comes and Goes

What it means: No hot water or water that runs hot, then cold, then hot again usually points to a failing thermostat, a dying heating element, sediment buildup in the tank, or a gas supply fault on gas systems.

A hot water system doesn’t normally fail without warning. Before it dies completely, most units show signs first: reduced hot water volume, rust-coloured water, strange banging or popping noises from the tank (usually sediment build-up), or the pilot light repeatedly going out on gas units. Electric systems will often trip the circuit or produce lukewarm water as the element starts to fail.

If your system is more than 8–10 years old and showing any of these signs, don’t wait for it to fail completely especially in a household with kids, elderly residents, or anyone who needs reliable hot water for health reasons. A professional inspection of your hot water system can often catch the problem before you’re left with a cold shower on a Monday morning.

Quick tip: If you smell gas near a gas hot water unit at any point, turn off the gas supply at the meter and call a licensed plumber immediately. Don’t attempt to relight the pilot yourself.

Sign 2: Slow, Gurgling, or Smelly Drains

What causes gurgling drains? A gurgling sound from a sink, shower, or toilet happens when air is trapped in the pipe and forced back up through standing water, usually because a blockage further along the line is restricting normal flow.

This is one of the most commonly ignored warning signs, mainly because a slow drain still technically “works.” But a partially blocked drain rarely fixes itself; it’s a sign that grease, hair, tree roots, soap scum, or foreign objects are narrowing the pipe. Left alone, it typically progresses like this:

1. One drain runs slower than usual.
2. Gurgling starts when other fixtures are used at the same time.
3. Bad odours drift up from the drain (a sign organic matter is decomposing inside the pipe).
4. The drain stops completely, often at the worst possible moment.

If more than one drain in the house is affected at the same time say, the kitchen sink and the laundry both gurgle when you flush the toilet that’s a strong indicator the blockage is in the main line, not just one fixture. That’s a job for a blocked drain plumber, and often a drain camera inspection to pinpoint exactly what’s causing it and where.

Callout Tip: Never rely on chemical drain cleaners as a long-term fix. They can damage older pipework, and they only clear a small channel through the blockage rather than removing it the problem usually returns within weeks.

Sign 3: Water Stains, Bubbling Paint, or a Musty Smell

What is causing a water stain on my ceiling or wall? Water stains, bubbling paint, or peeling wallpaper almost always mean water is getting into a space it shouldn’t either from a roof leak, a leaking pipe inside a wall cavity, or a failed shower waterproofing membrane.

This is one of the signs homeowners most often underestimate, because the damage seems purely cosmetic. In reality, by the time a stain is visible, water has usually been seeping for weeks. Left unaddressed, it can lead to:

• Structural timber rot
• Mould growth (a genuine health concern, especially for anyone with asthma or allergies)
• Electrical hazards if wiring is near the leak
• Higher repair costs as the damage spreads

If the stain is on a ceiling below a bathroom, it’s often a failed shower base, silicone, or waterproofing membrane. If it’s on an external wall after rain, it could be a roof leak or damaged flashing. 

Sign 4: Your Water Bill Has Jumped for No Reason

How do I know if I have a hidden water leak? An unexplained jump in your water bill, combined with a water meter that keeps ticking over when every tap in the house is off, is one of the clearest signs of a hidden leak often underground or inside a wall.

Hidden leaks are sneaky because there’s often no visible puddle or damp patch, especially with underground pipe leaks feeding gardens or slabs. Here’s a simple check you can do before calling a plumber:

1. Turn off every tap and appliance that uses water.
2. Note the reading on your water meter.
3. Wait 1–2 hours without using any water.
4. Check the meter again.

If the number has moved, you’ve got a leak somewhere in the system. This is exactly the kind of job where guessing costs you money professional leak detection uses acoustic and thermal equipment to pinpoint the leak’s exact location without digging up your entire yard or ripping into walls unnecessarily.

Sign 5: Multiple Drains or Toilets Backing Up at Once

Why are all my drains blocked at the same time? When toilets, sinks, and showers across the property all start backing up together, it usually means the blockage is in the main sewer line, not an individual fixture and this is considered a plumbing emergency.

This is one of the signs that genuinely can’t wait. A main line blockage means wastewater has nowhere to go, and it will find the lowest point in your plumbing system often the shower base or a floor drain. Left unresolved, this can lead to sewage backing up into your home, 

Common causes in the Emerald area include tree root intrusion into older clay or PVC sewer lines, ground movement affecting pipe joints, and collapsed or cracked sections of pipe. A sewer drain cleaning job with camera inspection will usually identify the exact cause and location, so the repair only disturbs the section of pipe that actually needs it.

Sign 6: Sudden Drop in Water Pressure

What causes a sudden drop in water pressure? A sudden, noticeable drop in water pressure rather than a gradual decline usually points to a burst or leaking pipe, a failing pressure valve, or a serious blockage restricting water flow somewhere in the system.

Gradual pressure loss over months is often just mineral buildup in old taps and shower heads annoying, but not urgent. A sudden drop is different. If your normally strong shower suddenly turns into a trickle, or every tap in the house loses pressure at once, water is either escaping somewhere it shouldn’t (a leak) or being blocked from reaching your fixtures at all.

Check whether the pressure drop affects hot water, cold water, or both:

• Hot water only: Often points to an issue with the hot water system or its connections.
• Cold water only: Could indicate a blocked or damaged inlet pipe.
• Both hot and cold: Suggests a main supply issue, a leak before the split point, or a pressure regulator fault.

If you notice this alongside damp patches, unusually green or lush patches of lawn, or the sound of running water when nothing’s turned on, treat it as a likely burst pipe situation and get a plumber out the same day.

Sign 7: A Toilet That Won’t Stop Running or Blocks Repeatedly

Why does my toilet keep blocking or running? A toilet that continually runs is usually caused by a worn flapper valve or faulty fill mechanism wasting water constantly, while a toilet that blocks repeatedly often signals a partial obstruction further down the drain line rather than a one-off issue.

Repeated blockages are a different story. If plunging the same toilet becomes a weekly routine, that’s not normal; it’s a sign of a partial blockage, an issue with the pipe’s fall (slope), or in older Emerald homes, sometimes tree roots affecting the line. A blocked toilet plumber can properly diagnose whether it’s a fixture issue or something further into the drainage system.