Industrial Backflow Inspections - BSI Provides a wide range of professional inspections for your facility.Backflow Tracking - BSI Online is an innovative, new way to track all the backflow assemblies within your water system.  With one low annual subscription fee, your municipality will have its own fully functioning backflow tracking program.Whether your town has 100 water connections or 100,000; BSI will tailor a complete backflow program to fit your needs.  Our services include: Physical Inspection, Assembly Tracking, & Backflow Ordinance Development.