NASSCO’s BSDI Certification Program

NASSCO’s Building Sewer & Drain Inspection (BSDI™) Certification Program is designed to assist plumbers, sewer and drain contractors, and inspectors in the proper inspection and assessment of private property building sewer and drains. Heavily based on NASSCO’s PACP™ standards, BSDI is similar to PACP, LACP™, and MACP™ certification programs because it teaches students to use unique codes to identify conditions within a pipe.

PACP is used to assess mainlines; LACP is used to assess laterals; and MACP is used to assess manholes. BSDI focuses on building sewers and drains (including laterals) but is different from LACP because BSDI inspections typically start from inside or very close to the building and go down through the lateral toward the sewer main.