RJN Group Blog When I/I Persists After a Sewer Remediation Program

When you have completed an extensive SSES program and implemented rehabilitation to remove Inflow/infiltration (I/I) sources from your system, but I/I levels are still not where you want them to be, what's next? Finding those persistent sources requires diligence and good quality data. A suburban Chicago community was faced with these issues after 10- and 25-year storms caused hundreds of reported basement backups and an EPA regulatory action. After determining that I/I was still a major issue using collected flow data, RJN Group conducted additional sanitary sewer inspections and installed additional permanent flow meters around the city to continue to monitor flow levels and measure rehabilitation success.... Read the rest