This add-on provides an independent technical review of existing water supply and sewerage designs, focusing on accuracy, coordination, and compliance within our hydraulic/PHE scope. We examine layouts, calculations, profiles, equipment selection, and interface points to identify gaps, inconsistencies, or coordination issues. Clients receive clear, practical recommendations that improve technical quality, reduce risk, and support decision-making throughout design or tender preparation. This service is equally suitable for confirming design validity or providing expert second opinions during ongoing project development.