10 Common Plumbing Problems In Residential & Commercial Properties

Noticed a slow-draining sink or unusual odours from your pipes? Plumbing issues can affect any property—whether it’s a family home or a commercial premises. While some problems may seem minor at first, ignoring them can lead to costly repairs, health concerns, or even structural damage.

In this blog, we’ll explore ten of the most common plumbing problems encountered across residential and commercial settings. You’ll also learn when it may be time to call a professional, especially for persistent or recurring issues.

1. Blocked Drains

One of the most frequent complaints from both homeowners and businesses is blocked drainage. In homes, this often happens in the kitchen or bathroom, while in commercial properties it may affect shared restrooms or floor drains.

Common causes of blocked drains on the Sunshine Coast include:

• Food scraps, fats, or oils in kitchen sinks.
• Hair and soap buildup in showers or basins.
• Foreign objects flushed down toilets.
• Tree roots entering underground pipes.

While minor blockages might be cleared with plunging or drain cleaners, stubborn or recurring cases usually indicate a deeper obstruction requiring professional attention.

2. Leaking Taps & Fixtures

A dripping tap may seem like a small inconvenience, but over time it wastes water and drives up utility costs. In commercial buildings, constant leaks can impact business operations or trigger complaints from staff and visitors.

Leaking fixtures often stem from:

• Worn-out washers or cartridges.
• Loose connections.
• Internal corrosion in older fittings.

Replacing washers or upgrading to more water-efficient fixtures can usually resolve this issue. If leaks persist, it may signal problems in the underlying pipework.

3. Low Water Pressure

Low water pressure can interfere with daily activities, whether it's a weak shower at home or slow-filling basins in a commercial washroom. It may affect one fixture or be a problem across the entire property.

Possible causes include:

• Buildup of mineral deposits in pipes.
• Undetected leaks reducing pressure.
• Faulty pressure regulators or valves.
• Corroded plumbing in older systems.

Professional diagnostics can help locate the exact source and suggest suitable solutions—from cleaning aerators to full system checks.

4. Burst or Leaking Pipes

Pipe leaks are not always visible but can cause extensive damage to walls, floors, or foundations if left undetected. Signs include damp patches, rising water bills, or mould growth.

Pipes may burst or leak due to:

• Corrosion or rust.
• Ground movement or shifting foundations.
• Tree root intrusion.
• Excessive water pressure.

For underground or hard-to-access pipework, pipe relining on the Sunshine Coast offers a no-dig repair method that restores function without excavation.

5. Running Toilets

Toilets that constantly run after flushing can waste significant amounts of water each day. While common in both homes and commercial premises, it’s an issue often overlooked.

The main causes include:

• Faulty flapper valves.
• Damaged float arms or chains.
• Loose fill valves.
• Worn-out internal seals.

Many running toilet issues are inexpensive to fix if addressed early, but prolonged neglect can wear down internal cistern parts and increase costs.

6. Hot Water System Issues

When hot water becomes inconsistent or non-existent, daily routines are disrupted. In commercial settings, such problems may breach compliance or health standards—especially in hospitality or healthcare environments.

Common symptoms include:

• Fluctuating temperatures.
• Discoloured or smelly hot water.
• Noisy hot water units.
• Water leaks near the tank or valves.

Professional servicing can determine whether the issue relates to thermostats, heating elements, or sediment buildup, helping to restore performance or recommend replacement if needed.

7. Sewer Backups

A sewer backup is an unpleasant and serious plumbing emergency. It presents a health risk and may cause extensive property damage if sewage water overflows indoors.

Warning signs include:

• Multiple slow drains throughout the property.
• Foul smells from drains or gurgling sounds.
• Water backing up in toilets or basins.
• Overflow from external sewer access points.

This issue may stem from blocked sewer lines, tree root intrusion, or grease accumulation. Swift professional action is essential to avoid further contamination or damage.

8. Corroded or Deteriorating Pipes

Older properties often feature galvanised or copper piping, which is prone to internal corrosion over time. In commercial buildings, wear may accelerate due to higher usage and water pressure.

Indicators of deteriorating pipes:

• Discoloured water.
• Metallic taste in drinking water.
• Frequent leaks or reduced flow.
• Green or blue stains near joints or outlets.

Modern pipe materials such as PEX or PVC offer more durability. In some cases, pipe relining may provide a long-term solution without the need for disruptive pipe replacement.

9. Unusual Noises in Pipes

Banging, clanging, or whistling sounds from your plumbing system can indicate underlying issues—often related to pressure or airflow.

These sounds may be caused by:

• Loose pipes vibrating against surfaces.
• Water hammer from sudden pressure changes.
• Air in the plumbing system.
• Worn valve components.

While sometimes harmless, unusual noises shouldn’t be ignored, especially if they’re frequent or accompanied by changes in water pressure or flow.

10. Poor Drainage in Floor Wastes

Commercial kitchens, laundries, or high-traffic bathrooms often rely on floor wastes to manage excess water. When these drains become slow or blocked, the risk of flooding increases.

Signs include:

• Pooling water around floor drains.
• Foul odours or visible gunk.
• Slow drainage despite cleaning.

This problem is often linked to grease, debris, or sediment buildup, particularly in commercial environments. Professional drain cleaning and regular maintenance can help keep these systems flowing.

Why Timely Repairs Matter

Delaying action on plumbing issues may lead to far more serious complications, including:

• Higher water bills.
• Internal water damage and mould.
• Property devaluation.
• Disruption to business operations.

Prompt intervention by a licensed plumber helps prevent these risks. Whether you’re dealing with blocked drains on the Sunshine Coast or considering pipe relining for your property, a tailored solution can save time and long-term expense.

Need Help With Blocked Drains on the Sunshine Coast? Call Us Today!

Plumbing systems are essential to the function and safety of every property—but they're also prone to wear and damage over time. Recognising the signs early and knowing when to seek professional support is key to managing both residential and commercial plumbing effectively.

At FlowWise, we assist property owners in resolving a wide range of plumbing problems, from clearing blocked drains to advanced pipe relining on the Sunshine Coast. Contact us today for tailored solutions that suit your property’s needs and help maintain long-term plumbing health.