

SAB Applications
SAB (SuDS Approval Body) is a statutory requirement in Wales for any development with an impermeable area of 100m2 or larger with the aim of:
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Reducing damage from flooding
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Improving water quality
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Protecting and improving the environment
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Ensuring the stability and durability of drainage systems
SAB Design Process
In order to achieve SAB Approval, the design must meet the 6 standards:
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S1 Runoff destination
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S2 Hydraulic control
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S3 Water quality
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S4 Amenity
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S5 Biodiversity
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S6 Construction, operation and maintenance
Our engineers have been designing drainage solutions in accordance with the SAB standards since its inception in 2019. We can assist you through the process from the design through to application and approval. Using the latest Causeway Flow software. We aim to provide a cost effective solution that meets the required standards set out by the SAB. Get in contact to discuss how we can assist you with your development.
