USSI was established in 1999 with the express purpose of eliminating rainwater inflow into the wastewater collection systems. Over the years we have developed the AIIM program which provides unique products, procedures and systems for water utilities When rainwater is prevented from entering the front end of the collection system, the AIIM program reduces overflows and spillages by increasing sewer capacity. The AIIM program is not only effective in preventing “Inflow” but it is also cost effective for water and sewer utlities.