What Happens During a Professional Septic Tank Cleaning

Jan 24, 2025 | Septic Tank Cleaning

Maintaining a clean and functional septic tank is essential for effective wastewater management. Septic tank cleaning prevents system failures, foul odours, and costly repairs. Whether for a residential or commercial property, understanding the process and importance of septic tank cleaning can save you time, money, and unnecessary stress.

How Septic Tanks Work

A septic tank is a vital component of a wastewater treatment system, particularly in areas lacking municipal sewer access. It collects wastewater from household drains, allowing solids to settle at the bottom as sludge, while oils and grease rise to form a scum layer. In between, the liquid effluent flows out to a drain field for further treatment.

The bacterial activity within the septic tank breaks down organic matter, reducing the volume of accumulated waste. However, regular septic tank cleaning is necessary to prevent sludge and scum build-up, which can overwhelm the system and lead to blockages or overflows.

The Importance of Septic Tank Cleaning

Neglecting septic tank cleaning can result in severe problems. Over time, accumulated waste reduces the tank’s capacity to function efficiently. This can lead to backups in your plumbing system, foul smells, and contamination of the surrounding soil or groundwater. Regular cleaning not only extends the lifespan of your septic system but also ensures its safe and efficient operation.

In commercial settings, the importance of septic tank cleaning is even more pronounced. Large volumes of wastewater and solid waste can quickly strain the system, making scheduled maintenance essential.

Examples of Neglect and Its Impact

Failure to clean a septic tank regularly can lead to visible and costly consequences. A full tank may cause wastewater to back up into your home, resulting in unpleasant odours and potential health risks. Outdoor areas, such as lawns or gardens, may also show signs of trouble, including unusually lush grass or standing water near the drain field.

In commercial settings, the stakes are higher. Restaurants, for example, produce large amounts of grease and fats that can clog septic systems. Regular cleaning is critical to managing this type of waste and avoiding disruptions to business operations.

Understanding the Cleaning Process

Regular septic tank cleaning involves more than just emptying the tank. During the process, technicians remove accumulated sludge and scum, ensuring the tank can handle new waste efficiently. For example, sludge buildup that isn’t addressed can solidify and become increasingly difficult to remove over time. Cleaning ensures that waste doesn’t overflow into the drain field, which could cause extensive damage.

Inspections are another critical step. These checks help identify issues like leaks, cracks, or faulty baffles before they become significant problems. If left unaddressed, these issues can lead to system failure, resulting in higher repair costs and potential damage to your property.

What Happens During Septic Tank Cleaning?

Inspection and Assessment

The cleaning process begins with a thorough inspection of the tank. Professionals locate the tank, uncover access points, and assess the levels of sludge and scum. This evaluation helps determine the extent of cleaning required and identifies potential issues, such as cracks or leaks, that may need attention.

Pumping the Tank

Using a vacuum truck, technicians pump out the contents of the tank, including sludge, scum, and liquid effluent. Removing this waste restores the tank’s capacity and prevents harmful solids from entering the drain field.

Flushing and Rinsing

Once the waste is removed, the tank and connecting lines are rinsed to dislodge any remaining debris. This step ensures that all blockages are cleared, promoting the smooth flow of wastewater.

Inspection for Damage

With the tank emptied, professionals inspect it for structural issues. Cracks, damaged baffles, or corroded components are identified and addressed promptly. Early detection of these problems can prevent more significant repairs in the future.

Cleaning Filters

If the septic system includes filters, they are cleaned or replaced to maintain efficient operation. Filters prevent solids from reaching the drain field, making their upkeep crucial.

How Often Should Septic Tanks Be Cleaned?

The frequency of septic tank cleaning depends on various factors, such as the size of the tank, the number of occupants, and the volume of wastewater generated. Most residential tanks require cleaning every three to five years, while commercial systems may need more frequent attention.

Ignoring regular maintenance can result in overflowing tanks, clogged pipes, and even complete system failure. Consulting a professional will help you establish a cleaning schedule tailored to your specific needs.

Common Mistakes to Avoid

Many homeowners unknowingly contribute to septic system problems by flushing non-biodegradable items, overloading garbage disposals, or using harsh chemicals. These actions disrupt the bacterial balance in the tank and can lead to clogs or damage.

Additionally, planting trees or shrubs too close to the system can cause root intrusion, which damages the tank and drain field. Properly managing what enters the system and maintaining a clear perimeter around the septic tank are essential practices.

The Benefits of Professional Septic Tank Cleaning

Professional services offer expertise, specialised equipment, and thorough cleaning that DIY methods cannot match. Trained technicians ensure all aspects of the tank are addressed, from pumping and cleaning to inspection and repair. This comprehensive approach not only keeps your system running smoothly but also identifies potential problems before they escalate.

Regular septic tank cleaning also protects the environment by preventing untreated wastewater from contaminating soil and groundwater. For businesses, maintaining a clean and functional system helps avoid disruptions and ensures compliance with health regulations.

Choosing a Reliable Septic Tank Cleaning Service

When selecting a service provider, consider their experience, reputation, and certifications. A reliable company will offer transparent pricing, use advanced equipment, and provide a detailed report of the cleaning and inspection process. Look for a provider that offers emergency services to address unexpected issues promptly.

Prolonging the Lifespan of Your Septic System

Septic tank cleaning is only one part of system maintenance. Reducing water usage, avoiding chemical cleaners, and using septic-safe products can significantly prolong your system’s lifespan. Scheduling regular inspections ensures any issues are addressed early, saving you from costly repairs.


Septic tank cleaning is a crucial aspect of maintaining a functional and hygienic wastewater system. By understanding the cleaning process and adhering to regular maintenance schedules, you can ensure the long-term efficiency of your septic system.

Why use Drain Blasters?

Cutting edge technology

Drain Blasters only works with the latest technology and equipment, using high pressure water-jetting.

Portable equipment

Our portable equipment can be carried into buildings and lifts in order to access those hard to reach places.

Scalable Equipment

Our fleet ranges in capacity and size from 1 to 10 tonne waste removal capacity and drain clearing capabilities, suitable for residential and industrial blockages.

 

Highly experienced teams

Our teams are made up of highly experienced individuals who are professional and friendly

24/7 Service

We are on call 24/7 to assist in the case of emergencies and short notice service

Competitive Prices

We offer highly competitive pricing while maintaining a high level of service

Our Services

Drain Clearing

Our experienced experts are available around-the-clock and are equipped with the latest drain clearing tools and technology to get the job done fast and effectively.

Liquid Waste Removal

We offer a professional, socially responsible & price effective solution as a leader in liquid waste management.

Septic Tank Cleaning

We specialize in septic tank cleaning and drainage, whereby we pump out and clean the contents of septic tanks.

Grease Trap Cleaning

Our grease trap cleaning process ensures a free flowing drainage system and alleviates odours in your workplace in a systematic, discreet and environmentally friendly manner.

Grease Traps

We proudly install grease traps into restaurants and institutions which require filtration of grease, fats, and oils from their wastewater.

Sewage Removal

We have extensive expertise and experience in resolving sewerage blockages of all sizes, with special care taken to dispose of sewage safely and effectively.

Areas We Service

Drain Blasters services almost all areas across Cape Town and Surrounding Areas

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