Plumbing problems are not always easy to find. A slow drain, recurring blockage, unexplained smell or damp patch may be the only visible sign of a much larger issue hidden beneath your property.
Traditionally, finding the source of an underground plumbing problem could involve considerable guesswork and excavation. Professional CCTV pipe inspection changes that. By sending a specialised camera through the plumbing system, a plumber can inspect the inside of pipes and identify problems without unnecessarily digging up floors, gardens or driveways.
At A to Z Plumbing, CCTV technology is an important diagnostic tool that helps us locate faults, understand their severity and recommend the most appropriate repair.
What Is a CCTV Pipe Inspection?
A CCTV pipe inspection uses a small waterproof camera specifically designed to travel through drainage and sewer pipes. The camera transmits footage to the plumber above ground, providing a detailed view of the condition inside the pipe.
Depending on the plumbing system and the problem being investigated, the camera can be introduced through an accessible drain, inspection opening or sewer inspection shaft.
Rather than relying solely on symptoms to determine what might be happening underground, the plumber can see the obstruction or damage directly.
This makes CCTV inspection useful for diagnosing problems such as:
- Cracked, fractured or collapsed pipes
- Tree root intrusion
- Accumulated grease and waste
- Foreign objects lodged inside drains
- Misaligned or displaced pipe joints
- Corrosion and deterioration
- Sections of pipe holding water
- Repeated drain blockages
- Structural damage requiring repair or relining
Accurate diagnosis is particularly important when a plumbing problem keeps returning after a drain has been cleared.
Why Hidden Pipe Problems Can Be Difficult to Diagnose
A plumbing system can extend for many metres beneath a house, driveway, garden or commercial property. The location where symptoms appear is not necessarily the location where the pipe has failed.
For example, water may back up through a drain inside the house even though the actual obstruction is much further along the sewer line. Likewise, a damaged underground pipe may allow water to escape into surrounding soil without producing an obvious leak at the surface.
Professional pipe inspection allows plumbers to investigate these inaccessible areas before deciding how the problem should be repaired.
This can form an important part of preventative Plumbing Maintenance because developing pipe problems can sometimes be identified before they result in a more disruptive plumbing emergency.
What Can a Sewer Inspection Find?
A professional sewer inspection can reveal problems that cannot be diagnosed reliably from above ground.
Tree Root Intrusion
Tree roots naturally seek moisture and can enter sewer pipes through small cracks or deteriorating joints. Once inside, roots can continue growing and trap toilet paper, waste and other material passing through the pipe.
The result may initially be an occasional blockage. As the root intrusion becomes more severe, however, the property may experience increasingly frequent sewer problems.
A CCTV camera can reveal where roots have entered the system and how extensively the pipe has been affected.
Cracked and Broken Pipes
Underground pipes can crack because of age, ground movement, external pressure, corrosion or other structural stresses.
A camera inspection helps determine the location and nature of the damage. This information is particularly useful when determining whether broken pipe repair should involve excavation or whether a less invasive repair method may be appropriate.
Where the existing pipe remains suitable for rehabilitation, Pipe Relining Services may provide an alternative to excavating and replacing an entire section of pipe.
Collapsed Pipes
A severely deteriorated pipe can partially or completely collapse. A partial collapse may restrict wastewater flow and cause recurring blockages, while a complete collapse can prevent drainage altogether.
CCTV footage helps plumbers assess how far the camera can travel and identify the approximate position of the structural failure.
Foreign Objects and Blockages
Not every recurring blockage is caused by structural pipe damage. Items entering the drainage system, accumulated grease, sanitary products and other debris can obstruct wastewater flow.
A CCTV inspection conducted after clearing a blockage can help determine whether the obstruction was an isolated event or whether an underlying defect contributed to it.
Displaced or Damaged Pipe Joints
Sections of underground pipe are connected by joints that can deteriorate or move over time. Ground movement can cause sections to become misaligned, creating an internal edge where debris repeatedly accumulates.
The problem may therefore appear to be a simple blocked drain when the real cause is a structural defect.
The Importance of the Sewer Inspection Shaft
A sewer inspection shaft provides an access point to the property’s sewer drainage system. Depending on the design of the system, plumbers may be able to use this access point for inspection, cleaning and diagnostic work.
Accessible inspection points can make it easier to investigate underground drainage problems without disturbing other parts of the property.
However, not every plumbing system has the same configuration. An experienced plumber can determine the most appropriate access point for CCTV equipment after assessing the property and its drainage layout.
CCTV Inspection Can Prevent Unnecessary Excavation
One of the biggest advantages of CCTV plumbing technology is its ability to reduce unnecessary investigative excavation.
Without knowing where an underground pipe has failed, digging can become expensive and disruptive. Gardens, paving, concrete or other surfaces may need to be disturbed simply to locate the problem.
CCTV inspection gives the plumber far more information before repair work begins.
When combined with pipe locating equipment, the inspection can help establish where a defect is positioned underground. The repair can then be planned around the actual location and condition of the affected pipe.
For homeowners, this can mean less disruption and a more targeted repair.
CCTV Inspection and Pipe Relining
Not every damaged pipe needs to be dug up and replaced.
Pipe relining is a trenchless repair technique that creates a new structural lining within an existing damaged pipe. Because the condition of the original pipe needs to be understood before relining takes place, CCTV inspection is an important part of the process.
The plumber can inspect the pipe to identify cracks, root intrusion, displaced joints and other defects and determine whether relining is appropriate.
The pipe can also be inspected again after the work is completed.
For suitable pipes, professional Pipe Relining Services can substantially reduce the amount of excavation required compared with conventional pipe replacement.
What About Burst and Leaking Pipes?
CCTV inspection is particularly valuable for drainage and sewer systems, but hidden plumbing problems can also involve pressurised water pipes.
Signs of a hidden leak can include:
- Unexpected increases in water usage
- Damp areas around the property
- Reduced water pressure
- Mould or persistent moisture
- Water appearing through walls, floors or ceilings
- Unexplained sounds of running water
Different diagnostic methods may be required depending on the location and type of pipe.
When a pipe has cracked, burst or begun leaking, prompt Burst & Leaking Pipe Repairs can help prevent further water damage and deterioration.
The important principle is the same: accurately identify the problem before carrying out the repair.
When Should You Consider a CCTV Pipe Inspection?
You may benefit from a professional pipe or sewer inspection when you experience recurring drainage problems or when there is reason to suspect damage inside an underground pipe.
Common warning signs include drains that repeatedly block, toilets that regularly back up, gurgling sounds, persistent sewer odours and multiple fixtures draining slowly at the same time.
An inspection can also be valuable when previous drain-clearing work has provided only temporary relief.
If the same section of plumbing continually causes trouble, simply clearing the obstruction may not address the underlying problem. There could be a crack, root intrusion, displaced joint or other defect that continues to create new blockages.
Why Accurate Diagnosis Matters for Broken Pipe Repair
Effective broken pipe repair begins with understanding exactly what has gone wrong.
Replacing an entire drainage line when only a small section is damaged can create unnecessary cost and disruption. Conversely, repeatedly clearing a drain when the pipe itself is structurally compromised does not solve the underlying issue.
CCTV inspection helps provide evidence about the condition of the pipe so the plumber can recommend an appropriate solution.
Depending on the findings, that solution might involve drain cleaning, removing tree roots, repairing an isolated section, pipe relining or replacing severely damaged pipework.
Keep Your Plumbing System in Good Condition
Hidden plumbing problems rarely become easier or cheaper to deal with when ignored. A small crack can allow tree roots to enter a sewer line, while a minor leak can eventually contribute to significant property damage.
Professional CCTV pipe inspection provides a practical way to investigate underground drainage systems and find problems that cannot be seen from the surface.
If you’re experiencing recurring blockages, drainage problems or suspect an underground pipe may be damaged, A to Z Plumbing can inspect your plumbing system, identify the cause and recommend an appropriate repair.
With decades of plumbing experience dating back to 1980, A to Z Plumbing provides professional plumbing, drainage, pipe repair and maintenance services throughout Sydney.
Call A to Z Plumbing on 1800 600 545 to arrange a plumbing inspection or discuss a recurring drainage problem.