In the campaign against I&I, there are lots of enemies you can’t readily see. Broken mains and laterals. Illegally connected sump pumps, downspouts and foundation drains. Pipe joints lying below seasonal high groundwater.And then there are some you can see quite easily — manholes, which are part of the focus of this month’s issue of Municipal Sewer & Water. You drive over them every day on the way to work. Your people pop them open regularly when cleaning and inspecting lines.They are right there — and they can add a lot of clear water to your sewers and ultimately the
