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Registered Office Hazlehead Crow Edge Sheffield S36 4HG

Tel: 0844 856 5152/3

Osma is a brand of Wavin UK, a leading supplier of water management, plumbing and drainage systems.

The company has a reputation for innovation and leadership, and an extensive product portfolio which includes the Hep2O®, OSMA, Hepworth Clay and Hepworth Terracotta brands.

Manufacturer of soil, waste, rainwater and plastic drainage systems, pipes and fittings for building and civils markets.

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Free fuel promotion


Plumbers across the UK will be given the chance to win free fuel vouchers thanks to the OSMA HepvO in-pack scratchcard p


OSMA Ultrarib - Ultra Reliable, Ultra...


Wavin, the UK’s leading manufacturer and supplier of plumbing, rainwater and drainage systems continues to meet the rigor...