Sewage Treatment Plant, Cesspit & Septic Tank Emptying & Desludging
Professional septic tank, cesspit, sewage treatment plant and pump station emptying, cleaning and pumping services for households and businesses across the UK.
- Trusted by 30,000+ UK households
- Experienced, friendly local drivers
- Scheduled and one-off collections
We help thousands of homes and businesses to prevent overflows, reduce disruption and keep systems operating efficiently with our septic tank emptying service.
1000s
of septic tanks
cesspits emptied safely every month
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Why customers Choose CSG
Reliable nationwide coverage, even in rural areas
Our large fleet of tankers means we can access hard-to-reach properties efficiently and safely.
Minimal disruption to your day
You don’t even need to be at home. Our experienced drivers complete collections quickly, cleanly and with care for your property and garden.
Fully compliant, environmentally responsible service
We’re licensed by the Environment Agency, members of British Water, and transport all waste to licensed treatment facilities.
Septic System Emptying & Desludging Made Simple
Our friendly, highly trained drivers take pride in completing every job safely and professionally, with minimal impact on your property and surroundings.
Once your system is emptied/desludged, waste is transported to a licensed sewage treatment facility. Our environmental specialists are continually developing innovative solutions that reduce environmental impact and support sustainable waste management.
We offer scheduled and one-off emptying services for:
Septic tanks
Sewage Treatment Plants
Cesspits
Pump Stations
Septic System Emptying For Everyone
Domestic Collection
Keep your home running smoothly with our domestic septic tank emptying service that works around your schedule.
Commercial Septic Tank Emptying
From planned maintenance to urgent callouts, our commercial septic tank emptying is made for businesses that can’t afford downtime.
Supporting Businesses Every Step of the Way
Whether it’s large, time-sensitive events like race meetings, multi-site operators such as pub groups or housing providers, or independent businesses like farms, we scale our service to fit your needs.
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Frequently Asked Questions About Our Septic Tank Emptying Services
How often should a septic tank or cesspit be emptied?
British Water and the Environment Agency recommends that you empty your tank annually or in line with the manufacturers guidelines . Some systems may need more frequent emptying depending on:
- Tank size
- Number of people in the household
- Volume of wastewater produced
Our operators will advise you on the right emptying schedule during our first visit.
However, if any issues arise between emptying, CSG is here to help you with the maintenance and repair of your sewage tank.
What happens if your sewage system isn’t emptied regularly?
Failing to empty your septic tank, cesspit or sewage treatment plant can lead to serious (and expensive) issues, including:
- Leaks or pooling water around the drainage field
- Slow-draining sinks and toilets
- Unpleasant odours near the tank or garden
- Excessive plant or grass growth above the tank
- Sludge or scum discharging into nearby watercourses
- Damage to the soakaway caused by solid waste
Not only are you at risk of the issues above, but it is also a legal requirement to maintain and empty your sewage system regularly to prevent pollution and system failure.
How much does septic tank emptying cost?
The cost of your sewage emptying service depends on your location and the volume of waste you need us to collect. You can get an instant quote in seconds by clicking here.
Do I need to be present during the collection?
No. As long as our drivers can safely access your tank, you don’t need to be present.
How long does septic tank emptying take?
Most collections are completed within 30-60 minutes, depending on tank size and access.
What happens to the waste after collection?
Wherever possible, we transport sewage waste to one of CSG’s licensed sewage treatment facilities for safe and responsible processing. Where a CSG facility is not available locally, the waste is taken to an appropriately licensed treatment facility in the area, in line with environmental regulations.
Is a septic tank completely emptied during an emptying service?
Although commonly called septic tank emptying, the service is more accurately described as desludging. We remove the accumulated sludge, solids and other settled material from the appropriate parts of the system so it can continue operating effectively.
The system may not be left completely dry. The precise process depends on the type, design and condition of the system, as well as any relevant manufacturer’s guidance.
This differs from a cesspit, which is a sealed holding tank that stores wastewater rather than treating it and therefore requires its contents to be emptied regularly.
Is there a difference between emptying a septic tank and a sewage treatment plant?
Although commonly described as “emptying”, septic tanks and sewage treatment plants are normally desludged rather than completely emptied. In both cases, our tanker removes the accumulated sludge that could otherwise reduce the system’s capacity or affect its performance.
A cesspit is different because it is a sealed holding tank that does not treat or discharge wastewater. Its contents must therefore be fully emptied when it approaches capacity.
When booking, please tell us which type of system you have so we can arrange the correct service and advise how frequently it should be desludged or emptied.
Get an Instant Online Quote
You can get an online quote in seconds using our simple form - just let us know where you are and the volume of waste you need us to collect. Happy with the price? You can book and pay online at a time that suits you.
Safety Built Into Every Service
See how CSG protect people, sites and the environment
Save Money with Our
Regular Emptying Scheme
Environment Agency guidelines and British Water recommendations state that septic tanks and cesspits should be emptied at least once a year, or in line with the manufacturer’s instructions. Our Regular Emptying Scheme helps you stay compliant and avoid costly problems - all at a discounted rate.
Septic Tank resources
Chat with our Waste Management Experts
Have a question or need advice? Our waste management experts are here to help. You’ll always speak to a real person who understands your needs and can help you find the right solution.
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