I&I Analysis: Finding and Fixing Your Worst Sections

A practical guide to prioritizing infiltration and inflow repairs for maximum ROI 

If you’re managing a wastewater collection system, you already know the drain that infiltration and inflow (I&I) puts on your budget. During wet weather events, clean groundwater and stormwater flood into your sanitary sewers, overwhelming treatment plants and driving up operational costs. But here’s the challenge: with limited budgets and miles of pipe to maintain, how do you identify which sections to fix first?