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Design Guidance

The 4th editions of "Sewers for Scotland" and "Water for Scotland" are available to download below.

The below two appendices to WfSv4.0 (Appendix O and Appendix Q) are still in draft form, but are included here for your information. These will be finalised and incorporated into WfSv4.1 as part of its release in July 2019.

The documents provide updated guidance for all standards and specifications required when designing new water or drainage infrastructure. All new designs received, from 1st January 2019 will be expected to align with these new design documents.

Sustainable Urban Drainage Systems

Our revised version of ‘Sewers For Scotland’ contains all information required to design and manage surface water through the use of SUDS. The document can be viewed or downloaded below.

Note: Access to Scottish Waters Standards and Specification (S&S) documents referenced in SfS3 and WfS3 is in development.  If you require a copy of S&S documents please make a request via

SUDS for Roads design guidance

The "SUDS for Roads" design guidance is available to download below. If you are interested in receiving a hard copy, please email  

If you have any questions in relation to these new documents, please contact our Customer Connections team.

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Sewers for Scotland Comparison Sheet

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This comparison sheet highlights the differences between V2 and V3 of the Sewers for Scotland document.

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Water for Scotland Comparison Sheet

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This comparison sheet highlights the differences between V2 and V3 of the Water for Scotland document.

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A guide for obtaining new water and waste water services

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Your step-by-step guide to the new connections process for your new development.

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SUDS for Roads

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The purpose of the document is to guide the reader through the design of roads incorporating SUDS that are suitable as best practice at reasonable cost.