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unblock MAIN STORM WATER LINE sydney

The main stormwater line connects your property’s system to the street’s network. Ensure smooth water flow with our expert services.

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Stormwater Drain Cleaning Services

If you’re experiencing issues with water backup, flooding, or poor drainage due to a blockage in your main stormwater line, we got you a solution.

With our specialised knowledge and advanced equipment, we provide efficient and effective unblocking services to ensure the smooth flow of stormwater, protecting your property from potential damage.

Don’t let a blockage cause further damage – contact us today for fast and reliable service.


The causes of a blocked main stormwater line are varied, but understanding them is crucial for effective prevention and mitigation. Here’s a more detailed breakdown:

Accumulation of Debris and Sediment

Over time, debris like leaves, branches, and sediment can accumulate within the stormwater pipe, impeding the natural flow of water. This buildup is often exacerbated during periods of heavy rainfall or urban runoff.

Tree Roots Infiltrating the Pipe

Tree roots are naturally drawn to sources of moisture, including stormwater pipes. Over time, roots can penetrate the pipe walls through small cracks or joints, leading to blockages and structural damage.

Collapsed or Damaged Pipe Sections

Aging infrastructure or external factors such as ground movement can cause sections of the stormwater pipe to collapse or become damaged, restricting the flow of water and causing blockages.

Structural Damage or Misalignment

Structural damage or misalignment of the stormwater pipe can occur due to various factors, including soil subsidence, seismic activity, or improper installation. These issues can disrupt the flow of water and contribute to blockages.

Foreign Objects or Trash

Improper disposal of waste materials, such as plastic bags, bottles, or construction debris, can find their way into stormwater drains, leading to blockages and impairing drainage.

Oil or Grease Buildup

Oil and grease from urban runoff can accumulate inside stormwater pipes, forming a sticky residue that traps debris and impedes water flow. This buildup can lead to persistent blockages and environmental contamination.

Excessive Stormwater Flow

During heavy rainfall or storms, the volume of stormwater runoff can overwhelm the capacity of the drainage system, leading to blockages and localized flooding. This is especially common in urban areas with limited drainage infrastructure.

Corrosion or Rusting of the Pipe

Over time, exposure to moisture and environmental factors can cause corrosion or rusting of stormwater pipes, weakening their structural integrity and increasing the likelihood of blockages and leaks.

Improper Waste Disposal

Improper disposal of hazardous chemicals, paints, or other pollutants into storm drains can lead to contamination of the stormwater system, causing blockages and posing risks to public health and the environment.

Blockages Caused by Animals

Animal activity, such as nesting or foraging, can result in the deposition of organic materials or debris into storm drains, leading to blockages and impairing drainage.

Aging Infrastructure

Many stormwater systems are aging and may not have been designed to accommodate the increased urbanization and development seen in recent years. Aging infrastructure is more susceptible to deterioration, collapses, and blockages.

Inadequate Maintenance and Cleaning

Lack of regular maintenance and cleaning of stormwater infrastructure can allow debris, sediment, and other materials to accumulate, leading to blockages and impairing drainage efficiency.

Soil Erosion or Subsidence

Soil erosion or subsidence around stormwater pipes can occur due to natural processes or human activities, leading to shifts in pipe alignment, collapses, and blockages.

Unintentional Damage during Construction

During excavation or construction projects, stormwater pipes may inadvertently be damaged or displaced, leading to structural defects and blockages if not properly addressed.

By addressing these underlying causes and implementing proactive maintenance strategies, municipalities and property owners can mitigate the risk of blocked stormwater lines and ensure effective drainage management.


Experiencing issues with your property’s drainage system? Here are some common symptoms of a blocked main stormwater line:

Water Backing Up or Flooding

Water backing up or flooding in the property, particularly during heavy rainfall, indicates a potential blockage in the main stormwater line. This can lead to property damage and pose safety risks.

Slow or No Drainage of Stormwater

Slow or no drainage of stormwater from your property’s drains suggests a blockage in the main stormwater line. This can result in water pooling on surfaces and cause inconvenience.

Gurgling Sounds from Drains

Gurgling sounds coming from the drains when water is draining indicate air trapped in the system due to a blockage. This can occur in multiple drains throughout the property.

Unpleasant Odors from Drains

Unpleasant odors emanating from the drains may be a sign of stagnant water or sewage buildup due to a blocked main stormwater line. These odors can be persistent and unpleasant.

Overflow or Backflow of Water

Overflow or backflow of water into nearby structures, such as sinks, toilets, or basements, suggests a blockage in the main stormwater line. This can lead to water damage and health hazards.

Increased Mosquito or Insect Activity

A sudden increase in mosquito or insect activity around drains or stagnant water areas indicates standing water due to a blocked stormwater line. This can create breeding grounds for pests.

Sinkholes or Depressions in the Yard

Sinkholes or depressions forming in the yard or pavement may result from underground water pooling caused by a blocked main stormwater line. These can pose safety risks and indicate significant drainage issues.

Wet or Damp Patches

Wet or damp patches in the yard or surrounding areas, particularly where there are no obvious sources of water, suggest water pooling underground due to a blocked stormwater line.

Unexplained Dampness or Moisture

Unexplained dampness or moisture in basements or crawl spaces can indicate water seepage from a blocked main stormwater line. This can lead to mold growth and structural damage if left unaddressed.

Unusual Noises or Vibrations

Unusual noises or vibrations when water is draining suggest blockages or air pockets in the main stormwater line. These vibrations can be felt or heard throughout the property.

Foul or Sewage-like Smell

A foul or sewage-like smell coming from drains is a strong indicator of a blocked main stormwater line. This smell can be persistent and unpleasant, indicating a significant drainage issue.

Blockages in Multiple Drains

Blockages occurring simultaneously in multiple drains or fixtures throughout the property suggest a common underlying issue, such as a blocked main stormwater line.

Water Bubbling Up

Water bubbling up from drains during heavy rainfall suggests water backing up from the main stormwater line. This can lead to property damage and health hazards if not addressed promptly.

Visual Signs of Debris or Standing Water

Visual signs of debris or standing water in drains indicate blockages in the main stormwater line. This can result in water backup and surface flooding.

Increased Water Pressure or Backups

Increased water pressure or backups in the plumbing system, such as toilets flushing slowly or sinks draining poorly, may indicate a blocked main stormwater line causing disruptions in the drainage system.

Difficulty Removing or Cleaning Drain Covers

Difficulty or inability to remove or clean drain covers due to blockages or debris buildup suggests a problem in the main stormwater line. This can impede proper drainage and maintenance efforts.

Presence of Sediment or Pollutants

Presence of sediment or pollutants in drain water, visible as discoloration or particles, indicates blockages in the main stormwater line preventing proper filtration and drainage.

Unexplained Changes in Water Flow or Pressure

Unexplained changes in water flow or pressure, such as sudden drops or fluctuations, may be indicative of a blocked main stormwater line affecting the overall drainage system.

Cracks or Leaks in the Main Pipe

Cracks or leaks in the main stormwater pipe can result from increased pressure or blockages causing structural damage. These leaks can lead to water damage and require immediate attention.

Persistent Drainage Issues

Persistent issues with drainage despite other measures being taken, such as cleaning drains or repairing fixtures, suggest a larger underlying issue in the main stormwater line that requires professional intervention.


Blocked stormwater can cause serious problems for your property and your health. Therefore, it is important to prevent and fix them as soon as possible. Here are some tips on how to do so:

  • Regularly inspect and clean your property’s stormwater system, including gutters, downpipes, pits, drains, and main stormwater line. Remove any debris or rubbish that may cause blockages.
  • Trim any overhanging tree branches that may fall or block your property’s stormwater system. Cut any tree roots that may grow into your property’s stormwater system.
  • Install gutter guards or mesh covers on your gutters and downpipes to prevent leaves and other debris from entering them.
  • Avoid throwing or blowing any rubbish into your property’s stormwater system. Dispose of them properly in bins or recycling centres.
  • If you notice any signs of blocked stormwater on your property or on the street, contact




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A blocked storm water drain is a plumbing problem that occurs when water cannot flow freely through the gutters, downpipes, and storm water drainage pits that collect rainwater and release it to the storm water drainage system in your street.

The most common causes of a blocked storm water drain are environmental matter like leaves, dirt, pebbles, sand, sticks, and garden covering materials that accumulate in the pipes over time. Other causes include tree roots that invade and damage the pipes, heavy rainfall that overflows the drains, and broken or misaligned pipes that trap debris.

Some signs that indicate you have a blocked storm water drain are:
– Water gurgling or bubbling in your pipes or drains.
– Water draining slowly or not at all from your sinks, showers, toilets, or bathtubs.
– Water coming out of your overflow relief gully (ORG) or inspection opening (IO).
– Bad smells or noises coming from your drains or pipes.
– Cracks or dampness on your walls or floors.

A blocked storm water drain can cause various issues such as:
– Water overflowing from the gutters or pooling around your home, which can lead to flooding and property damage.
– Water backing up onto your roof or seeping into your home, which can cause leaks and water damage to your ceilings, floors, and carpets.
– Water stagnating around your home, which can attract mosquitoes and other pests.
– Water contaminating your storm water drainage system with sewage or rubbish, which can pose health and environmental risks.

Some ways to prevent a blocked storm water drain are:
– Clean your gutters and downpipes regularly to remove any leaves, twigs, or other debris.
– Install gutter guards or leaf filters to prevent debris from entering your pipes.
– Trim any tree branches that hang over your roof or pipes to prevent leaves and roots from falling into your drains.
– Avoid flushing anything other than toilet paper down your toilets or pouring any fats, oils, or grease down your sinks.
– Check your pipes for any cracks, leaks, or misalignments and repair them as soon as possible.

Depending on the severity and location of the blockage, you may be able to unblock a storm water drain yourself by using a plunger, a drain snake, a hose, or a chemical drain cleaner. However, these methods may not be effective or safe for all types of blockages. If you are unsure how to unblock a storm water drain or if you encounter any difficulties, you should call a professional plumber for assistance.

You should call a plumber for a blocked storm water drain as soon as you notice any signs of a blockage or if you cannot unblock it yourself. A plumber will have the tools and expertise to locate and clear the blockage quickly and safely. A plumber will also be able to inspect your pipes and drains for any damage or defects and advise you on how to prevent future blockages.

You can contact a plumber to unblock your storm watewr drain by calling 1300311511. We are a trusted plumbing company that offers fast and affordable services for all your drainage needs. We have over 20 years of experience in clearing blocked drains using CCTV cameras, high-pressure jetters and trenchless pipe relining. They also offer 24/7 emergency services for your convenience.

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