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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 4-00-02 Issue 8.1 Information and guidance for the development and amendment of specifications and guidance notes for the water industry

Issue: February 2015 Code: 4-00-02 Status: Current

IGN 4-01-02 Issue 3 The determination of end-loads for the performance testing of fittings for polyethylene pipe

Issue: December 2017 Code: 4-01-02 Status: Current

IGN 4-01-03 Issue 2 Guide to pressure testing of pressure pipes and fittings for use by public water suppliers

Issue: October 2015 Code: 4-01-03 Status: Archived

WIS 4-01-03 Specification for hydrostatic pressure testing of polyethylene and polyethylene barrier water supply pipelines and sewer rising mains

Status: For Comment From: 24/11/2022 To: 24/02/2023

WIS 4-01-03 Issue 1 Specification for hydrostatic pressure testing of polyethylene and polyethylene barrier water supply pipelines and sewer rising mains

Issue: March 2024 Code: 4-01-03 Status: Current

WIS 4-01-03 Draft for public comment – Briefing note

Status: For Comment From: 24/11/2022 To: 24/02/2023

WIS 4-01-04 Issue 1 Specification for the audit of water industry risk assessments and risk management processes

Issue: March 2018 Code: 4-01-04 Status: Current

WIS 4-02-01 Version 2.1 Operational requirements: in situ resin lining of watermains

Issue: March 2009 Code: 4-02-01 Status: Archived

WIS 4-02-01 Version 3 Operational requirements: in situ resin lining of watermains

Issue: April 2010 Code: 4-02-01 Status: Archived

WIS 4-02-01 Version 4 Operational requirements: in situ resin lining of watermains

Issue: April 2011 Code: 4-02-01 Status: Archived