WIS and IGN Library | Water UK Standards Board

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The Library contains WIS & IGN as PDF files in one of four states (current, draft, archived, archival candidate) for free download. Pay close attention to a document’s caveats.

WIS and IGN Library

IGN 4-25-02 Issue 2 August 2023 Applications for stainless steel in the water industry

Issue: August 2023 Code: 4-25-02 Status: Archived

IGN 4-25-02 Issue 2.1 November 2023 Applications for stainless steel in the water industry

Issue: November 2023 Code: 4-25-02 Status: Current

WIS 4-26-01 Issue 1 August 2024 Specification for leaktightness of covers for manholes and inspection chambers

Issue: August 2024 Code: 4-26-01 Status: Current

IGN 4-31-01 Issue 2 November 1986 Unplasticised PVC pipes and fittings

Issue: November 1986 Code: 4-31-01 Status: Archived

IGN 4-31-02 Issue 1 June 1985 Specification for plasticized PVC waterstops for use in construction, contraction and expansion joints in concrete water retaining structures

Issue: June 1985 Code: 4-31-02 Status: Archived

IGN 4-31-03 Issue 1 August 1986 Guide to joint design and installation of PVC waterstops in water retaining structures

Issue: August 1986 Code: 4-31-03 Status: Archived

IGN 4-31-04 Issue 2 August 1988 Specification for unplasticised pvc pressure pipes for cold potable water

Issue: August 1988 Code: 4-31-04 Status: Archived

IGN 4-31-05 Issue 1 March 1988 Specification for solid wall concentric external rib-reinforced uPVC sewer pipe

Issue: March 1988 Code: 4-31-05 Status: Archived

WIS 4-31-05 Issue 2 July 1991 Specification for solid wall concentric external rib-reinforced uPVC sewer pipe

Issue: July 1991 Code: 4-31-05 Issue 2 Status: Ageing

WIS 4-31-06 Issue 2 March 1994 Specification for blue unplasticized PVC pressure pipes, integral joints and post-formed bends for cold potable water (underground use)

Issue: March 1994 Code: 4-31-06 Status: Ageing