Why we’re unique
30 years' drainage experience
Trusted expertise delivering reliable drainage solutions for every project.
Drawings that support approval
Clear, accurate plans to help streamline the approval process.
HD CCTV survey diagnostics
High-definition inspections that pinpoint drainage problems with precision.
End-to-end civil drainage engineering and installation solutions
Precision planning, detailed technical drawings and fully compliant civil engineering are essential for any successful drainage project. Whether we are responding to a collapsed underground pipe requiring urgent excavation or delivering a full drainage system for a new development, we ensure every stage is completed to a high professional standard.
At Severn Drainage Solutions, we manage the entire process from initial site assessment and planning through to final installation and water authority approval, ensuring that our drainage systems are safe, efficient and fully compliant.
Structured planning and compliant drainage design
Every project begins with a detailed site evaluation where we assess flow requirements, soil conditions and existing utility layouts. This allows us to design effective foul and surface water systems suited to the specific environment.
Severn Drainage Solutions produces accurate technical drainage drawings that clearly outline pipe routes, diameters, inspection chambers and connection points. These plans are essential for meeting Building Regulations requirements and providing clear guidance to construction teams, ensuring that all drainage installations are correctly designed before any groundworks begin.
Frequently asked questions
Groundworks delivery and structural drainage repairs
Once approvals are in place, we carry out full excavation and installation works with precision and safety. We manage deep trench excavation, pipe bedding, backfilling and secure connections to public sewer networks in line with strict water authority standards. For failed systems, we also provide heavy-duty structural repairs where no-dig solutions are not suitable.
This includes:
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Collapsed pipe replacement using modern PVC or twin wall systems
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Manhole and inspection chamber rebuilding with proper sealing and benching
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Soakaway and French drain restoration using modern drainage crate systems
We ensure every repair or installation is fully tested, compliant and built for long-term performance.
Step-by-step project delivery and compliance assurance
We follow a structured delivery process to ensure every project is completed efficiently and to the required regulatory standards. This includes CCTV surveys and full site assessments to map existing drainage systems and identify defects, along with detailed technical design drawings that specify correct gradients and flow calculations. We also support regulatory approvals such as Build Over Agreements and Section 106 permissions, followed by final excavation, installation, system testing and official sign-off.
We maintain full compliance with UK Building Regulations (Part H), supported by experienced civil groundworkers who are fully trained, insured and equipped for complex excavation works. We also provide septic tank and drainage maintenance services, ensuring that both off-grid and mains systems remain fully operational. All work is delivered with fixed pricing, clear timelines and full documentation before commencement.