How to Unblock Stormwater Drain

How to unblock stormwater drain like a pro

how to unblock stormwater drain

Blocked stormwater drains are more than just an inconvenience; they can lead to severe damage to your home and the surrounding environment. Water that can’t properly drain can cause flooding, which weakens foundations and erodes the soil. Knowing how to unblock your stormwater drain not only helps protect your property but also ensures your drainage system functions efficiently.

Before diving into the how-tos, let’s discuss why stormwater drains get blocked in the first place.

Common Causes of Blocked Stormwater Drains

Several things can cause your stormwater drain to clog. Some of the most frequent culprits include:

  • Leaves and branches. These can easily build up in drains, especially if there are trees nearby.
  • Mud and dirt. After heavy rainfall, dirt and sediment can get washed into the drain.
  • Litter and debris. Plastic bags, bottles, and other types of waste can obstruct the flow of water.
  • Roots of trees. Tree roots often grow into underground drainage pipes, causing blockages.

Understanding what causes these blockages will help you take better preventative measures and identify when a problem is developing.

Signs of a Blocked Stormwater Drain

Identifying the signs of a blocked stormwater drain early can save you a lot of hassle. Some of the warning signs include:

  • Water pooling around your property. If water doesn’t seem to be draining properly and is collecting in puddles, it’s a sign that your stormwater drain might be blocked.
  • Slow drainage. If water is taking a long time to flow away from your property, there could be a partial blockage.
  • Unpleasant odours. Bad smells from your drainage system could indicate trapped debris, decaying organic matter, or even sewage.

By addressing these signs early, you can prevent more significant blockages from forming.

Tools You'll Need

Before you begin unblocking your stormwater drain, make sure you have the right tools for the job. Here’s a list of essentials:

  • Drain rods. These are long, flexible rods that can be pushed through the drain to break up blockages.
  • High-pressure hose. A hose with a powerful stream can help to flush out debris.
  • Protective gloves and goggles. You’ll be dealing with dirty water and waste, so it’s essential to protect yourself.
  • Drain camera (optional). If you’re unable to locate the blockage, a drain camera can help you inspect the inside of the pipes.

Now that you’re equipped with the right tools let’s move on to the steps you should follow to unblock your drain.

Step-by-Step Guide to Unblock a Stormwater Drain

Step 1: Identify the Blockage

The first thing you need to do is find out where the blockage is located. Start by checking for visible debris around the drain. If the issue isn’t immediately clear, you may need to open a drain cover and inspect the inside of the pipes.

Step 2: Clear Surface Debris

Many blockages start at the surface level with leaves, branches, and litter. Clear any visible obstructions around the drain opening. This might be enough to restore normal drainage if the blockage isn’t too severe.

Step 3: Use a Drain Rod or Plunger

If the blockage is deeper inside the drain, using a drain rod or plunger can help dislodge the debris. Push the rod down the drain until you feel resistance, then twist and push to break up the blockage.

Step 4: Apply a High-Pressure Hose

For more stubborn clogs, a high-pressure hose can be used to blast away debris. Insert the hose into the drain and let the powerful stream of water push through the blockage. This method works best when the blockage is mud, dirt, or loose debris. 

Step 5: Check for Deeper Blockages

If the previous steps don’t resolve the issue, the blockage might be deeper inside the drainage system. In this case, you may need a drain camera to investigate further, or it could be time to call a professional. Read mor about the power of jet blasting for blocked drains.

DIY vs. Professional Help

Unblocking a stormwater drain can often be done as a DIY task. However, there are times when professional help is necessary.

  • When to call a professional? If the blockage is too deep or if it involves complex root systems, a plumber with specialised equipment may be required.
  • Benefits of DIY. DIY solutions are usually cheaper and can be effective for minor blockages. Plus, it gives you control over maintaining your system.

Preventing Future Blockages

To avoid blocked drains in the future, consider implementing some of these preventative measures.

  • Regular cleaning schedules. Make it a habit to clear debris from your drains regularly, particularly after heavy storms.
  • Install gutter guards. These can help prevent leaves and other debris from entering your drainage system.
  • Maintain surrounding trees. Trim any overhanging branches that might drop leaves and branches into your drains.

Common Mistakes to Avoid When Unblocking Drains

When attempting to clear your drains, there are a few mistakes you should avoid.

  • Using harmful chemicals. Some chemicals can damage your pipes or the environment.
  • Ignoring recurring blockages. If your drains keep getting blocked, there may be a more serious underlying issue that needs professional attention.
  • Neglecting maintenance. Regular upkeep is crucial for preventing future blockages.

Environmental Impact of Blocked Stormwater Drains

Blocked drains don’t just affect your property—they can also have a significant environmental impact. When stormwater can’t flow properly, it can lead to:

  • Pollution. Contaminants like oil, litter, and chemicals can accumulate and enter local water bodies.
  • Harm to wildlife. Flooding from blocked drains can disrupt habitats and harm local ecosystems.

How to Safely Dispose of Debris

After unblocking your drain, you’ll need to dispose of the debris properly.

  • Avoid illegal dumping. Don’t dump debris into natural water sources or other inappropriate locations.
  • Proper waste management. Dispose of leaves, mud, and other debris in green waste or garbage bins to prevent further blockages.

Unblocking a stormwater drain may seem daunting, but with the right tools and knowledge, it’s a manageable task. Identifying blockages early, using the appropriate methods, and maintaining your drainage system can prevent major issues down the line. When in doubt, don’t hesitate to call a professional plumber to avoid causing further damage.

Frequently Asked Questions

The time varies depending on the severity of the blockage. Minor clogs can take as little as 30 minutes, while more severe blockages might take several hours or require professional help. Call a plumber servicing Penrith, Lithgow and Blue Montains (Great Western Corridor)

A foul odour could indicate trapped debris or organic matter. Try cleaning out the drain, and if the smell persists, consult a professional.

Yes, you can use household items to unblock a stormwater drain, particularly for minor blockages. Boiling water, a baking soda and vinegar mixture, or a garden hose can help loosen and flush out debris. A drain plunger may also work to dislodge clogs near the surface. However, these methods are only effective for small blockages and won’t work for more severe issues like tree roots or heavy sediment buildup, which may require specialized tools or professional assistance.

It’s not recommended, as chemicals can corrode your pipes and damage the environment.
If the blockage reoccurs, especially within a short period, it’s best to call a plumber who offers a warranty on their services.

Yes, tree-root blockages require specialised tools and expertise that professional plumbers are equipped with.

If you are based anywhere in Blue Mountains region, or Lithgow or Penrith, the team of Ironclad Plumbing can help! We are a local plumbing company based in Katoomba and we offer professional help when it comes to unblocking stormwater drains.

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