- Terrace Wood Farm, St Marys Lane, Hertford SG14 2LF
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Years Of Experiences
Get peace of mind with our Sewage Treatment Plant Installation Services, completed in just 5–10 days. At Willowmead, we handle everything, from compliance checks and expert installation to full system testing with trusted Tricel products.
Whether it’s a new build or an upgrade, our Sewage Treatment Plant Installation Services deliver reliability, environmental compliance, and quality without compromise. Homeowners across the UK choose Willowmead for professional service backed by certified installers and over 20 years of drainage expertise.
✅ Installed in 5–10 Days.
✅ Certified, Trusted Local Installers.
✅ Using Reliable Tricel Systems.
Act now to secure your 15% discount — expert Sewage Treatment Plant Installation Services with full compliance guaranteed.
Fill in the form and we’ll call you back within 10 minutes — or call us now on 01992 307960
Ensure your property meets 2025 regulations with our expert sewage treatment plant installations, avoiding fines and legal issues.
Every installation comes with a Building Regulations Completion Certificate — protecting your property’s value and avoiding last-minute buyer negotiations.
Choose full installation or self-supply options for the right balance of cost savings and quality.
At Willowmead, we specialise in high-quality septic tank installations, delivering systems that are efficient, eco-friendly, and fully compliant with UK regulations. Founded by Chris — a certified expert with over 20 years of experience in groundwork, drainage, and property development — our team brings proven expertise to every project.
From your first consultation to final compliance checks, we manage the entire process using trusted products like Tricel. With industry certifications and a commitment to getting it right the first time, Willowmead is your dependable partner for stress-free septic solutions.
Get in touch today for your free quote and see why homeowners and businesses trust Willowmead for reliable, certified installations.
When you reach out to us, you won’t be passed around — you’ll speak directly with our director, Chris Johnson. Chris takes real pride in his work and genuinely cares about every project, no matter the size. He’s built Willowmead on a foundation of trust, passion, and attention to detail, and he’s always happy to offer free, no-obligation advice to help you make the right decisions. For Chris, it’s not just about systems and regulations — it’s about doing things properly, and supporting clients every step of the way.
With over 20 years of hands-on experience in groundwork and drainage, Chris leads every installation personally. No call centers. No junior crews. Just direct access to a true professional you can trust.
Willowmead was built on one principle:
“If it’s not done right the first time, it’s not done at all.”
That means your septic tank will be installed safely, efficiently, and fully compliant with all regulations — giving you complete peace of mind.
Chris and his team recently decommissioned a septic tank for us and installed a new treatment plant. We were really impressed at how the team carried out the work, keeping any mess to a minimum and thoroughly tidying up each evening. Very professional job from start to finish and would definitely recommend.
Chris and team did an excellent job. Firstly taking us through the entire process of installing a treatment plant and drainage field. Great job done to schedule and hassle free. Job well done. I would highly recommend their services to anyone interested in installing a treatment plant.
This was an utterly painless experience from start to finish, and Chris is an absolute joy to work with. Professional, thoughtful, knowledgeable and totally reliable. Highly recommended to anyone in need of treatment plant services.
We needed a new treatment plant to replace an end of life septic tank / soakaway. So glad we choose to use Willmead to undertake the work. Excellent, friendly communication throughout and great quality of work on site. Would not hesitate to recommend.
great service throughout, can't fault Chris and the team, would highly recommend, spot on!
Our services extend across Hertfordshire and parts of the surrounding counties, reaching key towns such as Hertford, Ware, Hoddesdon, St Albans, Potters Bar, and Bishop’s Stortford. We also proudly serve areas in the northern part of Greater London, ensuring dependable support for both urban and rural communities. If you’re unsure whether we cover your location, just get in touch — our team is always happy to help.
At the heart of our approach is simplicity and clarity. Here’s how we work to ensure your sewage treatment plant installation is seamless and stress-free:
We discuss your needs, property setup, and goals. Friendly advice, no obligation.
We assess your site to design a system tailored to your property.
You get a fixed, clear quote upfront. No hidden surprises.
Efficient, professional installation with full system testing — compliance guaranteed.

A modern, eco-friendly system that fully treats wastewater to meet UK regulations — ideal for new builds or upgrading outdated septic tanks. Installed in 5–10 days with full compliance certification.

Required before installing drainage fields — we test your soil’s ability to absorb wastewater safely and legally.

Keep your system running smoothly — or get fast help when things go wrong. Scheduled servicing + 24/7 emergency callouts available.

Safe, efficient wastewater dispersal — built to last.
We design and install drainage fields that work with your land, protecting your property and the environment — fully compliant and maintenance-smart.
We’ve seen a surge in homeowners choosing to replace their old septic tanks with modern sewage treatment plants — and for good reason. With UK regulations tightening, many older systems no longer meet legal standards, putting homeowners at risk of fines or enforcement action. Upgrading to a Tricel-certified treatment plant doesn’t just keep you compliant — it protects your property value with a Building Regulations Completion Certificate that reassures buyers and prevents last-minute price drops. Beyond compliance, you’ll enjoy the peace of mind that comes with a system that runs silently, odor-free, and leak-free — no more worrying about unpleasant smells or messy failures. While the initial investment may be higher than a basic septic tank, the long-term savings on maintenance, water usage, and potential penalties make it a smart financial move. And perhaps most importantly, you’re future-proofing your home: whether you’re planning renovations or simply want to avoid disruption down the line, a modern treatment plant ensures you’re ready for whatever comes next. This isn’t just an upgrade — it’s a lasting investment in your home’s safety, value, and sustainability.

Global Expertise in Sewage Treatment and Safety Products
Your Premier Sewage Treatment Plant Installation Experts.
At Willowmead Treatment Plants, we take pride in our accreditation and recommendation by Tricel, a testament to our unwavering commitment to excellence in residential sewage treatment installations and services. Our certification with Tricel, a leader in efficient and environmentally compliant wastewater solutions, allows us to offer the latest in sewage treatment technologies.
As an authorized Tricel installer, we maintain rigorous standards to ensure that every installation is executed with professional precision and top-tier expertise. Choose Willowmead for solutions that not only meet but exceed your expectations, providing effective, clean, and safe wastewater management for your home.
For bespoke consultations, site evaluations, or to learn more about how our Tricel-certified services can enhance your property, please reach out to us. We are dedicated to delivering personalized solutions tailored to your specific needs.
For residential sewage treatment installations , trust our expertise. We customize each system to meet the specific requirements of your property while ensuring full regulatory compliance. Our team of skilled technicians delivers exceptional service, and we prioritize clear communication to keep you informed throughout the process. Quality workmanship is our promise.
A septic tank simply stores and separates waste — it doesn’t truly treat it. But under today’s UK regulations, that’s no longer enough. That’s why more and more homeowners are upgrading to sewage treatment plants: they actively clean wastewater to a much higher standard, ensuring full compliance with environmental rules. Unlike older systems, they operate silently and odor-free, eliminating the risk of unpleasant smells or leaks. Plus, every installation comes with a Building Regulations Completion Certificate — a powerful asset that boosts your property’s value and reassures potential buyers. And perhaps most importantly, it’s a future-proof solution, ready for renovations, sales, or stricter regulations down the line. If you’re still relying on an old septic tank, you may unknowingly be breaking the law — and exposing yourself to fines. Upgrading now isn’t just responsible — it’s the smartest way to protect your home, your wallet, and your peace of mind.

Explore Our Latest Sewage Treatment Plant Installations for Inspiration. We Guarantee Quality Workmanship and Attention to Detail






FAQs: Find answers to the most popular questions about the sewage treatment plants and technologies we provide.
A septic tank only separates solids from wastewater — it doesn’t fully treat it. A sewage treatment plant actively cleans the water to a much higher standard, making it safe to release into streams or drainage fields. Under current UK regulations, sewage treatment plants are often required — especially for new builds or replacing old septic tanks.
In most cases, yes — especially if you’re installing a new system or upgrading an old septic tank. Since 2020, UK Environment Agency rules (General Binding Rules) require systems to discharge clean, treated effluent. If your septic tank discharges directly to a watercourse, you’ll likely need to upgrade to a treatment plant to stay compliant and avoid fines.
Typically 5–10 days from start to finish — depending on ground conditions, weather, and system size. We’ll give you a clear timeline during your site visit, and we stick to it. Minimal disruption guaranteed.
Yes, sewage treatment plants come in various sizes and configurations, making them suitable for installation in small or confined spaces. Our team can assess your property and recommend the best solution to fit your space requirements
Yes — we’ve installed systems in tight gardens, sloped land, and confined urban spaces. During your free site evaluation, we’ll assess your property and design a custom solution that fits — no matter the challenge.
No. A properly installed and maintained Tricel sewage treatment plant is completely odor-free and operates quietly — you won’t even know it’s there. We design and install every system to run smoothly and discreetly.
Yes, sewage treatment plants can be designed to serve multiple properties, such as small communities or developments. These systems, known as communal or shared sewage treatment plants, offer cost-effective solutions for managing wastewater from multiple sources.
Yes, sewage treatment plants are designed to be environmentally friendly, utilizing biological processes to treat wastewater effectively. They produce cleaner effluent compared to traditional septic tanks, reducing the impact on the surrounding environment.
brilliant service received from Chris Johnson and his team from the start to the end ,very tidey ,punctual, and he did a grand job extending the opening of the open plan lounge into the garden and installing 5 Bifold doors which involve a lot of work and structural engineering work ,he did all that with a nice smile reflecting that he is enjoying his handy work ,highly recommended ,big thank you Chris.