The eighth edition of Sewers for Adoption (SfA8), entitled “A Design and Construction Guide for Developers” was published as a draft in April 2020 and sets out clear standards for sustainable drainage systems (SuDS) for the first time. Prior to full implementation, this version of Sewers for Adoption will exist alongside versions 6 & 7 of the guide. In that period, while some companies may […]

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The chemical resistance of pipe materials has emerged as an important issue, given the increasing development of contaminated brownfield sites. CPDA members are already well positioned in this area, given the excellent chemical resistance of standard clayware; it is for this reason that clay pipes are frequently specified for use on such sites. The performance of standard clay systems can […]

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Site visit to CPDA Member Hepworth Clay

CPDA member Hepworth Clay (Wavin Ltd) recently hosted a visit of fellow CPDA members to their impressive factory in Sheffield showcasing the technology and processes used to manufacture their clay pipes. The Hepworth Clay drainage system comprises a range of perforated and non-perforated vitrified clay pipes supplied complete with factory-fitted push-fit flexible couplings or plain ended with separate couplings to be […]

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CPDA attend the bi annual CEN / TC 165 Wastewater Engineering meeting

Paul Wydell of Hepworth Clay represented CPDA at the bi annual CEN / TC 165 Wastewater Engineering meeting in plenary session. The meeting location which rotates to be hosted by different European standardisation organisations was held by the Cyprus Organisation for Standardisation. The purpose of the plenary meeting was to give and receive updates from all the different European working […]

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CPDA members given tour of W T Knowles & Sons Limited site

CPDA member W T Knowles & Sons Limited hosted a visit of fellow CPDA members to their factory in Elland which included a tour of the site and detailed explanations about the traditional processes involved to make the clay products. W T Knowles & Sons Limited has been manufacturing and supplying an extensive range of clay chimney pots and cowls since […]

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Inspecting sewers from the inside!

Always wanting to continue research into drains and sewers one of our members, Hepworth Clay took a tour underground to inspect the sewers of Antwerp from the inside. The sewers, otherwise known as De Ruien, are a shadow of the rich history above ground. Sewers, streams and fortifications have crisscrossed Antwerp ever since the Middle Ages. This network of both natural […]

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