When it comes to delivering effective, compliant and durable stormwater management systems, experience and precision matter. At Enviroseal, our reputation as one of Europe’s leading lining and containment solution providers is built on consistent results, expert knowledge and a refined methodology. Our attenuation tank installations are not only reliable—they are also efficient, minimising disruption and keeping projects on track and within budget. This article outlines our proven step-by-step process for delivering attenuation tanks, ensuring high performance, long-term durability and full regulatory compliance for every project.
Why Choose Enviroseal for Attenuation Tank Installations?
Installing attenuation tanks is about more than just digging a hole and placing a system underground. It’s a complex process involving hydrological planning, structural integrity, material performance and long-term environmental impact. Mistakes can be costly—not just financially but in terms of safety, compliance and operational failure. At Enviroseal, we combine industry-leading materials, advanced engineering practices and highly qualified installation teams to deliver attenuation systems that perform flawlessly under pressure. Every installation follows a structured, streamlined process designed to reduce risk, maximise efficiency and meet every project’s unique needs. To explore our full stormwater solutions, visit our Attenuation Tanks page.
Consultation and Site Assessment
Every successful installation begins with a clear understanding of the site. Our process starts with a detailed consultation where we assess your project goals, environmental conditions and regulatory requirements. We review your drainage strategy, planning permissions and proposed site layout to identify the most appropriate attenuation tank design. Our engineers also conduct or analyse ground investigations to evaluate factors like soil stability, groundwater levels, access constraints and surface runoff volumes. This helps us determine the right storage capacity, tank type and installation method—ensuring the system works in harmony with the landscape.
Bespoke System Design
Once the assessment is complete, our in-house design team creates a custom solution tailored to your site. This includes detailed CAD drawings, hydraulic performance data and full compliance with SuDS (Sustainable Drainage Systems) and Building Regulations. We work with world-leading manufacturers to source the most appropriate materials—be it modular crates, HDPE geomembranes or reinforced concrete components. Our focus is always on quality, sustainability and long-term performance. Where needed, we incorporate features like flow control devices, inspection chambers and silt management systems into the design.
Project Planning and Logistics Coordination
Efficient installation depends on meticulous planning. Our project managers coordinate the delivery of all materials and equipment to the site in line with your construction schedule. We factor in everything—traffic restrictions, crane or plant access, weather considerations and storage space on-site. By streamlining the supply chain and mobilising only what’s needed, we reduce delays and help avoid cost overruns. Our team also liaises with main contractors, civil engineers and local authorities to ensure full alignment before installation begins.
Certified Installation by Expert Technicians
Enviroseal installations are carried out exclusively by our highly trained field technicians—many of whom are CSWIP-certified by TWI (The Welding Institute). This ensures every membrane weld, structural connection and component is installed to the highest professional standards. From excavation and base preparation to lining, assembly and backfilling, every phase is executed with accuracy and care. Our crews work efficiently to minimise downtime and environmental disturbance while ensuring safety remains the top priority.
Testing, Commissioning and Quality Assurance
Before sign-off, every attenuation tank installation undergoes comprehensive inspection and testing. We verify water-tightness, outlet flow rates and structural integrity. Where geomembrane liners are used, all seams are vacuum tested or spark tested to confirm there are no leaks. Once commissioning is complete, we provide all necessary documentation, including test certificates, installation records, maintenance guidelines and warranty information. Clients receive full transparency, peace of mind and a system that’s guaranteed to perform.
All Enviroseal projects are backed by a 25-year warranty covering both materials and workmanship—among the most comprehensive guarantees in the industry.
Ongoing Support and Maintenance Guidance
Our support doesn’t end at handover. We offer advice on ongoing inspection, maintenance intervals and compliance checks to ensure your attenuation system remains effective for decades to come. Should you need servicing or modifications in the future, our team is always available for expert guidance. We understand the challenges developers and contractors face in meeting regulatory deadlines and sustainability targets. That’s why our end-to-end process is designed to deliver results—with no corners cut and no surprises.
Proven Results. Trusted Partner.
At Enviroseal, we take pride in delivering not only attenuation tanks that work—but also a process that makes your job easier. With hundreds of successful installations across the UK and Europe, we bring unmatched expertise and a problem-solving mindset to every project. Whether you’re managing a tight construction timeline or working in a sensitive environmental area, we have the tools, people and process to deliver outstanding results—on time and on budget.
For further information or to discuss project requirements, please contact Enviroseal at 01695 228 626 or enquiries@enviroseal.co.uk.
