Municipal Sanitary Sewer Systems

• Perforated manhole covers (pickholes included). Manholes located near curb and/or gutter are highly susceptible to I/I.
• Broken or Cracked Manhole Frames
• Wall seepage through mortar between bricks or concrete block, base of manhole frame, joints of precast concrete riser sections, lift holes, broken ladder rungs.
• Deteriorated channels and benches.
  

Sewer Pipes

• Structural defects such as: pipe wall cracks and fractures, holes, broken collapsing pipes and pipe shear breaks.
• Pipe joints which are misaligned, separated, open, deflected, offset, chipped or cracked.
• Protruding plumber’s taps which also can prevent or obstruct maintenance activities and sewage flow in the main line.
• Root masses
• Cross-connections
• Stormwater sewer connection
  

Private Sanitary Sewer System (Service Connection)

• Cleanouts
• Broken risers and caps
• Used as a floor and/or area drain
• Sewer Pipes
• Same as municipal sewers
• Cross-connections
• Roof leaders tied into service connection sewer
• Driveway and/or area drain tied into service connection sewer
• Building foundation drain tied into service connection sewer
• Sump pump discharge into service connection sewer