I&I Analysis: Finding and Fixing Your Worst Sections

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

If you are 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 is the challenge: with limited budgets and miles of pipe to maintain, how do you identify which sections to fix first?

At Modern Engineering Solutions, we have helped utilities across Colorado and neighboring states tackle this exact problem. Through systematic I&I analysis and strategic prioritization, our clients have reduced peak flows by 30 to 50% while maximizing their infrastructure investment returns. Here is our proven approach to finding and fixing your worst I&I sections.