Mainline Drainage

Foul, surface water & combined drainage networks installed to specification.

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Expert Mainline Drainage services — safely delivered, on programme, to the highest standard.

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Mainline Drainage Mainline Drainage project
ISOCertified
Plant Hire & Civil Engineering

Mainline Drainage Services

Effective drainage infrastructure is essential for the long-term performance of any development. We provide comprehensive mainline drainage solutions for residential, commercial, industrial and public infrastructure schemes.

Our experienced teams install foul water, surface water, combined drainage systems, and attenuation infrastructure using industry-approved methods. We work from detailed engineering drawings ensuring every installation meets specification, regulatory requirements, and project timelines.

Services Include
Foul water drainage
Surface water drainage
Stormwater systems
Combined drainage networks
Deep drainage installations
Manholes and inspection chambers
Attenuation tanks
Pipe laying and trenching
Drainage testing and commissioning
Utility coordination and reinstatement
Why IJ Lynn

Why Choose I.J. Lynn & Sons

🌊

Full Networks

Foul, surface and combined drainage from design to completion.

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All Diameters

Drainage installed using a full range of materials including Concrete PE and UPVC.

Fully Tested

All installations tested to NHBC and WIS standards.

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Deep Excavation

Experienced in deep drainage in challenging ground.

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Other Services

ISO 9001Quality
ISO 14001Environmental
ISO 45001H&S
Safe-T-CertSite Safety
CPCSPlant Operators
IJ Lynn site
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