Commercial drainage — prepare for construction.
Drainage designed to handle the flow.
Foul water drainage, storm water management, pipework installation, soakaway construction, attenuation design, SuDS compliance and outfall connections for developers, builders and businesses across Norwich and Norfolk.
- Foul water drainage
- Storm water drainage
- Pipework & manholes
- Soakaway construction
- Site-wide drainage strategies
- Attenuation & SuDS design
- Outfall & connection works
- Groundwater control
Professional drainage team, completed the pipework and soakaways on schedule. Excellent communication throughout.
— J. Barnes, NorwichCommercial drainage for Norfolk sites
Norwich Groundworks Ltd delivers commercial drainage groundworks across Norwich and Norfolk — from foul water drainage and storm water management to pipework installation, soakaway construction and attenuation systems for developers, builders and businesses.
- Foul water drainage
- Storm water drainage
- Pipework & manholes
- Soakaway construction
- 20+ years drainage experience
- Building Regulations compliance
Every drop, matters
From foul water drainage to storm water management — we handle every stage of the drainage process for developers and contractors across Norfolk.
Foul Water Drainage
Pipework, manholes and connection to mains sewer or treatment plants for commercial kitchens, toilets, bathrooms and industrial waste water systems. Full compliance with Building Regulations Part H.
Storm Water Drainage
Soakaway construction, attenuation tanks, piped networks and sustainable drainage systems (SuDS). Designed to handle peak flow rates and prevent flooding on commercial sites.
Water Management Solutions
Site-wide drainage strategies, groundwater control, attenuation design, outfall connections and Environment Agency compliance for large-scale commercial and residential developments.
Pipework & Manhole Installation
Trench excavation, pipe laying, manhole construction and connection to existing drainage networks. All work tested to ensure water-tightness and correct flow rates before backfill.
Our drainage process
From initial survey to final connection, we follow a proven 4-step process that delivers reliable drainage for every commercial project.
Site Survey & Design
We survey the site, review existing drainage, assess ground conditions and design the most effective drainage solution. All designs comply with Building Regulations and environmental standards.
Excavation & Pipework
Trenches excavated to correct depth and fall, pipework laid on granular bedding, manholes constructed at inspection points. All joints tested before backfill.
Pipework & Manhole Installation
Drainage runs tested for water-tightness and flow rates. Final connection to mains sewer, treatment plant or soakaway with full CCTV survey and certification provided.
Handover & Documentation
All test results, CCTV footage, as-built drawings and compliance certificates compiled into a comprehensive drainage file. Site reinstated and handed over with full documentation.
Commercial drainage across Norwich & Norfolk
We provide commercial drainage across the whole of Norfolk. Our teams are local, know the ground conditions and understand the drainage challenges specific to Norfolk geology.
Questions about drainage
Common questions from Norwich and Norfolk developers and contractors about commercial drainage, specifications and process.
What drainage services do you provide?
We provide foul water drainage, storm water management, pipework installation, soakaway construction and attenuation systems for commercial and residential developments. Every project is designed to Building Regulations Part H and signed off by Building Control.
How long does a drainage installation take?
Timelines depend on pipe runs, ground conditions and connection distances. A typical commercial drainage system can be installed and tested within one to three weeks. Heavily vegetated or built-up sites with demolition requirements may take longer. We provide a detailed timeline after the initial site survey.
Do you use CCTV surveys?
Yes. Every drainage installation is surveyed by CCTV camera after installation to confirm correct pipe falls, joint integrity and freedom from debris. A digital recording and report is provided with the completion certificate.
Can you connect to mains drainage?
Yes. We manage the entire connection process to mains sewer, treatment plants or soakaway systems. We liaise with utility companies and Building Control to ensure compliant connections.
Do you offer maintenance contracts?
Yes. We offer annual drainage maintenance contracts including CCTV surveys, jetting, manhole inspections and minor repairs to keep your drainage system operating effectively.
Ready to start your drainage project?
Get a free quote for your drainage project.
Tell us about your project and we will provide a clear, itemised drainage quote within 24 hours.