Blocked Commercial Drains: 6 Common Causes

Blocked drains are a nuisance for any commercial establishment, potentially leading to costly repairs and interruptions in business operations. Understanding the general causes of these blockages can help managers and maintenance teams prevent them effectively. Here is a look at the most frequent culprits.

Common Causes of Blocked Commercial Drains

Grease and Fat Build-Up

In kitchens, one of the leading causes of drain blockages is the accumulation of grease and fats. When hot, these substances are liquid and easily washed down the drain. However, as they cool, they solidify. They end up sticking to the inner walls of the drainage pipes and gradually causing a blockage. Regular drain maintenance and the use of grease traps can help mitigate this issue.

Foreign Objects

Commercial drains often become clogged due to objects that should not be disposed of via the drainage system. Common examples include sanitary products, paper towels, plastic wrappers, and even utensils. Educating staff on what can and cannot be flushed or washed down drains is crucial in preventing such blockages.

Food Waste

Unlike residential sinks, commercial kitchen sinks see a much higher volume of food waste. Even with strainers in place, smaller food particles can accumulate over time and clog drains. Implementing efficient waste disposal practices and regular drain cleaning in Melbourne can keep food waste from causing issues.

Tree Roots

For businesses located on ground level or in older buildings, tree root intrusion into drainage systems can be a common issue. Tree roots naturally seek out various water sources, and if they find a crack or leak in underground pipes, they can grow into the pipes and cause significant blockages. Regular inspections can help catch and address root growth early.

Structural Issues

Over time, pipes can suffer from degradation due to various factors like corrosion, ground movement, or poor installation. Such structural issues can lead to partial or complete blockages. Routine checks and drain maintenance are essential to ensure the integrity of drainage pipes and prevent such occurrences.

Heavy Rain and Flooding

Heavy downpours can overwhelm drainage systems, especially if they are already partially blocked. Excess water can carry silt, leaves, and debris into drains, exacerbating blockages. Ensuring that gutters and storm drains are clear of debris can help manage this risk.

Preventive Measures

Prevention is always better than cure, especially when it comes to drainage problems. Here are a few tips for avoiding blocked commercial drains:

  • Regularly clean and maintain drains and grease traps.
  • Educate staff on what can and cannot go down the drain.
  • Install drain strainers to catch food particles and other debris.
  • Schedule routine inspections to detect and resolve issues before they escalate.

By understanding and addressing the common causes of drain blockages, commercial establishments can avoid the inconvenience and prevent clogged drains.

Why Opt for Professional Commercial Drain Cleaning Services?

Maintaining a seamless operation is crucial for any commercial business, and this includes ensuring that plumbing and drainage systems are functioning properly. While routine drain maintenance can be handled internally, there are compelling reasons to enlist professional services for commercial drain cleaning.

Expertise and Experience

Commercial drain cleaning services bring expertise that goes beyond basic plumbing knowledge. At Precision Hydro Excavations, we have experience dealing with various commercial plumbing systems and the unique challenges they present. This expertise ensures that the job is done right the first time, preventing costly mistakes that can occur with less experienced handlers.

Advanced Equipment

Professional experts have access to advanced tools and technology designed for thorough cleaning and diagnosis of plumbing issues. Equipment like high-pressure water jetters, motorised drain augers, and state-of-the-art CCTV cameras for drain inspection can address blockages more effectively than conventional methods. This level of cleaning is difficult to achieve with standard equipment.

Preventative Maintenance

Regular drain maintenance by professionals doesn’t just clear current blockages; it can also prevent future problems. At Precision Hydro Excavations, we identify and rectify potential issues before they turn into serious problems, saving businesses from unexpected disruptions and hefty repair bills.


Hiring professionals for cleaning may seem like an additional expense. However, it can actually be more cost-effective in the long run. Professionals can perform a more thorough job, which means less frequent servicing is needed. Moreover, by preventing severe blockages and potential pipe damage, professional cleaning saves money on emergency repairs and lost business due to operational downtimes.

Emergency Services

Many professional cleaning services like Precision Hydro Excavations offer 24/7 emergency assistance. For businesses where a blocked drain can mean halted operations, having access to round-the-clock service is invaluable. This helps in ensuring that any issues can be addressed promptly, minimising disruption to your operations.


For commercial businesses, the drainage system is a critical component of the overall operation. Professional drain cleaning in Melbourne not only ensures that your drains are free of blockages but also contributes to the longevity and efficiency of your plumbing system. Investing in such services is a prudent decision that can enhance operational efficiency, ensure compliance with health regulations, and ultimately save on costs.

When facing drainage issues in your commercial space, contacting Precision Hydro Excavations can offer a professional and effective solution. Our commitment to exceptional customer satisfaction and quality services ensures that your commercial drainage system is maintained to the highest standards. This helps in reducing the risk of future problems. Reach out to us today to schedule a consultation and see how we can help keep your operations running smoothly.

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