--- title: "White Paper: Working Smarter Against I&I" description: The dollar amount spent to combat I/I can be hefty, but establishing an analysis-driven strategy can ensure you are getting the most out of your investment by dramatically increasing the amount of I/I resolved. Only after a comprehensive understanding of sewer condition can a prioritized set of improvements be planned and implemented. image: https://blog.envirosight.com/hubfs/ii_graphic.jpg --- [![Envirosight Sewer and Drain Inspection Equipment](https://blog.envirosight.com/hubfs/Images/new_logo_dark.svg)](https://www.envirosight.com/) - [Products](https://envirosight.com/products/) - [Capabilities](https://envirosight.com/capabilities/) - [Clients](https://envirosight.com/clients/) - [Service](https://envirosight.com/service/) - [Learn](https://envirosight.com/learn/) - [Company](https://envirosight.com/company/) - [Contact](https://envirosight.com/contact/) - [Get a Demo](https://inbound.envirosight.com/demo_request) [Back to recent posts](https://blog.envirosight.com/) # White Paper: Working Smarter Against I&I Posted by [Venay Sehgal Bhatia](https://blog.envirosight.com/author/venay-sehgal-bhatia) on Nov 27, 2015 ![ii_graphic.jpg](https://blog.envirosight.com/hs-fs/hubfs/ii_graphic.jpg?width=200&name=ii_graphic.jpg "ii_graphic.jpg")In many cases, inflow and infiltration (I&I) accounts for up to 45% of the annual flow to treatment plants. Sources of I&I include leaky manholes, lateral connections and sewer mains. Yet, a majority of rehabilitation efforts focus solely on sewer mains. The dollar amount spent to combat I&I can be hefty, but establishing an analysis-driven strategy can ensure you are getting the most out of your investment by dramatically increasing the amount of I&I resolved. Only after a comprehensive understanding of sewer condition can a prioritized set of improvements be planned and implemented. In this white paper we discuss the total system approach to combating I&I and the tools available to evaluate the different elements of your sewer system. With concepts presented in this paper, not only will you get a comprehensive understanding of the condition of your sewer system, you’ll also be ready to develop a plan to cut I&I by up to half. 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Only after a comprehensive understanding of sewer condition can a prioritized set of improvements be planned and implemented. " } ```