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The reference for residential and commercial drainage systems.
One of the UK's most trusted plastic drainage brands, Osma offers a complete range of plastic drainage systems for domestic and commercial projects.

Osma leads the industry in kitemarked drainage systems

Choose from the wide range of drainage solutions from Osma

Above Ground Systems

Below Ground Systems


Visit our e-learning centre which offers courses on Osma Soil & Waste, HepvO and Osma Rainwater.
Learn more about Osma

Tips & Tricks

Visit our Knowledge Centre for tips and tricks, FAQs and all you need to know about the Osma range.
Visit our blog

Technical Tools

Our Pipe Deformation Tool and an Inspection Chamber Selection tool will solve your calculations in an instant.
Try our technical tools

Stockist Locator

Find your local Osma stockists and their contact details on our stockist locator.

Find a stockist

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