Session: management of drainage near source – disconnection/minimise surface water entering public drainage

K. W. S. Smith, Christopher Jefferies, David J. Blackwood

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Many combined sewer networks are currently constrained due to lack of capacity. Surface water entering the network may have an impact on the local environment by causing additional spills from Combined Sewer Overflows (CSOs) and flooding events. With the increasing number of developments taking place in Scotland, more and more demands are being placed upon the existing wastewater assets and infrastructure of the drainage utility, Scottish Water. The principal way of preventing these CSO spills/flooding event s is to reduce the number of surface water connections to the combined sewer network and promote more surface water discharges to nearby watercourses.

    The problem is being addressed by examining all development applications as they are considered by a drainage planning officer in the water authority. The research reported in this paper is investigating the conditions under which it is reasonable and practical for Scottish Water to accept surface water flows into its combined sewer network . This paper presents a summary of the initial findings of the research to date by examining a sample of the sites examined. The objective of the work is to develop a methodology to support a rigorous stance on the acceptance of surface water flows into the combined sewer network. The results have not as yet been obtained.
    Original languageEnglish
    Title of host publicationProceedings 11th International Conference on Urban Drainage, Edinburgh, Scotland, UK, 31 August-5 September 2008
    Number of pages10
    Publication statusPublished - Aug 2008
    Event11th International Conference on Urban Drainage - Edinburgh International Conference Centre, Edinburgh, United Kingdom
    Duration: 31 Aug 20085 Sep 2008
    Conference number: 11th (archived website of the conference)


    Conference11th International Conference on Urban Drainage
    Abbreviated title11 ICUD
    Country/TerritoryUnited Kingdom
    Internet address


    • Connection
    • Surface water
    • Combined sewer
    • Capacity
    • Constraints
    • Disconnection
    • Scottish Water


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