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NSA represents companies associated with the survey, operation, maintenance and renovation of sewers, drains and pipelines.

It promotes networking and knowledge sharing among members, offers updates on relevant legislation and provides access to industry working groups including DEFRA and Energy and Utility Skills.

It also acts as a focus for complaints on non-conformance, and technical inquiries.
National Sewerage Association (NSA)


  • National Sewerage Association (NSA)
  • Call 020 8942 9391
  • Visit website

Email National Sewerage Association (NSA)



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