Document
WIS 4-02-01 Version 8 Operational Requirements: In Situ Resin Lining of Water Mains
Introduction
WIS 4-02-01 Version 8 will become effective from 00.01hrs on 1st January 2025, replacing WIS 4-02-01 Version 7.3 October 2014. Until then Version 7.3 remains effective. Interpretation of Version 8’s designation as ‘current’ should recognise the above timeline.
Version 8 has been uploaded (18/9/24) to assist in preparation for the transition. It has been prepared by the ‘Expert In Situ Lining Group’ on behalf of the Water UK Standards Board.
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