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Professional Septic Tank Cleaning & Maintenance

Septic tanks are one of our main specialities. We cover it all, from repairs and maintenance to upgrading your old septic tank to a sewage treatment plant.

We have over 25 years of experience and offer annual service and maintenance packages. We can keep your waste systems clean and problem-free, all year round.

If you have concerns regarding your system, we are happy to answer any questions that will give you peace of mind.

Septic tank being cleaned

Why choose us to clean your septic tank?

Our team specialise in septic tanks and sewage treatment plants, supporting local homeowners and businesses across the West Midlands for over 25 years.

Our technicians are highly experienced and have specialised knowledge regarding the maintenance of sewage and drainage systems. Not only can we empty and clean your septic tanks, but we can also check the entire system is safe and legal.

Recent changes, like the General Binding Rules 2020, might require alterations to your existing septic tanks. Our team can help to advise on your options and ensure your home is safe, legal and problem-free.


Get in touch

Contact our friendly and professional team via form, phone or email for any drainage issues you may have.

From blocked drains to septic tank repairs and replacements, we're here to help. We have over 25 years of experience and offer 24/7 emergency callouts.


Loo's were backing up so contacted Cotswold Drainage at 12 noon on a Saturday via WhatsApp which was listed on their website. They responded within 60 seconds and Adrian was at our house by 3pm, quickly assessed our underground drains layout and unblocked it in less than 15 minutes. To make sure everything was 100%, he got us to flush all loos to ensure water was flowing correctly and finished off with a camera up the drains to check everything was totally clear. A very efficient and thorough service and they even guarantee the work for six months. Highly recommended. Thank you.
- PhilipC
Cotswold Drainage are absolutely fantastic! Always prompt, always reliable, and they sort out every issue with impressive speed. Our workplace drains cause more trouble than we’d like, but these guys come to the rescue every single time. Truly outstanding service!”
- Rachel Coates
Cotswold Drainage were great & would definitely recommend! All the staff were friendly, professional & did a brilliant job mending our septic tank!
- Tracey Butler
Fast and efficient
- Alastair
Fast ! Great knowledge and speedy result !
- Jane Woolliscroft
This company carried out some rather difficult works inside a treatment plant for me. There was a longer delay than I expected for the parts but they kept me informed at all times. They carried out the work exactly as planned and on time as they agreed, to the exact price quoted. It was terrible weather and the two men working on site still got the job done and were positive and hard working all the way through. I am impressed with Cotswold Drainage and will continue to use them in the future. They are friendly, realistic, not the cheapest quote I'd had, but certainly honest and knowledgeable people. I don't mind paying slightly more for that level of service. It was stress free and good value in the long run. So when you look at multiple quotes, I'd say consider them above others due to their knowledge, honesty and workmanship.
- John M
- Rob Pateman
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    Have an emergency? Or looking for a maintenance or quote?

    Why is septic tank cleaning important?

    Maintaining a septic tank is not just about avoiding the unpleasant odours from your garden. It’s a critical aspect of home maintenance that impacts your health, property value, and the environment. A neglected septic tank can turn your dream home into a nightmare quicker than you might think.

    Regular cleaning extends the lifespan of your septic system. By sticking to a routine cleaning schedule, you reduce the need for costly repairs and replacements. The accumulation of sludge and scum is kept in check, which means fewer mechanical failures and a longer-lasting system.

    Neglected septic tanks can lead to environmental hazards. Did you know that polluted groundwater can stem from an improperly maintained septic tank? When these systems fail, the untreated waste seeps into the soil, ultimately contaminating nearby water bodies and posing health risks to your family and community.

    Clean septic tanks prevent blockages and backups. There's nothing worse than a slow drain or the foul stench of sewage backup in your home. Regular cleaning minimises these issues, keeping everything flowing smoothly and your house smelling fresh.

    Properly maintained tanks protect your property’s value. If you're planning to sell your house, prospective buyers will appreciate a well-looked-after septic system. It’s a sign of a responsible homeowner, which adds value to your property in their eyes.

    Drain unblocking process

    How are septic tanks are cleaned?

    The first step is always a comprehensive inspection. Our technicians will check for sludge build-up and any evident problems. This initial check helps establish how much work is needed and if there are any immediate repairs required.

    Next, we pump out the waste using a vacuum truck.  These are equipped to handle both solid and liquid waste, ensuring your tank is completely emptied. This process helps reduce the chance of blockages and keeps your system functioning seamlessly.

    High-pressure water jets are then used to clean the interior surfaces. These powerful cleaners scrub the tank, making sure all remaining residues are blasted off, leaving it spick and span.

    Once the inside is clean, it’s time to check for any cracks or leaks. Any structural damage identified is noted and reported for further action. This step is crucial for preventing leaks that could lead to severe environmental hazards.

    Our team adhere to eco-friendly practices and ensure all waste is taken to approved sites for disposal. This action not only keeps your conscience clean but also complies with legal requirements.

    Drain unblocking services

    How can we help?

    As a leading drainage company, we offer a variety of services with Septic Tank problems, just some of our services include:

    • Installation
    • Removal
    • Conversion of a tank to a Treatment Plant
    • Reports and Investigations
    • Sorting out soakaway problems

    At Cotswold Drainage we offer a 25-year guarantee along with an annual service and maintenance contract so make sure you contact us for your new installation systems!

    Cotswold Drainage Engineer

    What we offer

    Here at Cotswold Drainage, our team have over 25 years’ experience and the expertise guaranteed to sort your problem quickly with minimum of fuss, leaving you more than satisfied.

    We offer a 6-month warranty, along with a free drain camera health check and a guarantee that you will receive follow-ups during and after your 6-month warranty.

    We operate a large fleet of vehicles, equipped with specialist equipment for any situation, including our high-power jetting system for removing blockages & cleaning, and also CCTV for on-site surveying of the problem or damaged drainage systems.

    Don’t just take our word for it, read our incredible reviews left by our valued customers

    Loo's were backing up so contacted Cotswold Drainage at 12 noon on a Saturday via WhatsApp which was listed on their website. They responded within 60 seconds and Adrian was at our house by 3pm, quickly assessed our underground drains layout and unblocked it in less than 15 minutes. To make sure everything was 100%, he got us to flush all loos to ensure water was flowing correctly and finished off with a camera up the drains to check everything was totally clear. A very efficient and thorough service and they even guarantee the work for six months. Highly recommended. Thank you.
    - PhilipC
    Cotswold Drainage are absolutely fantastic! Always prompt, always reliable, and they sort out every issue with impressive speed. Our workplace drains cause more trouble than we’d like, but these guys come to the rescue every single time. Truly outstanding service!”
    - Rachel Coates
    Cotswold Drainage were great & would definitely recommend! All the staff were friendly, professional & did a brilliant job mending our septic tank!
    - Tracey Butler
    Fast and efficient
    - Alastair
    Fast ! Great knowledge and speedy result !
    - Jane Woolliscroft
    This company carried out some rather difficult works inside a treatment plant for me. There was a longer delay than I expected for the parts but they kept me informed at all times. They carried out the work exactly as planned and on time as they agreed, to the exact price quoted. It was terrible weather and the two men working on site still got the job done and were positive and hard working all the way through. I am impressed with Cotswold Drainage and will continue to use them in the future. They are friendly, realistic, not the cheapest quote I'd had, but certainly honest and knowledgeable people. I don't mind paying slightly more for that level of service. It was stress free and good value in the long run. So when you look at multiple quotes, I'd say consider them above others due to their knowledge, honesty and workmanship.
    - John M
    - Rob Pateman
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