Sanitary Sewer Inflow/Infiltration Inspection Program

Sanitary Sewer Inflow/Infiltration Inspection Program


In 2018, the City of Boone implemented a sanitary sewer inspection program to be proactive about maintaining the integrity of their sanitary sewer system. A major objective of the sanitary sewer inflow/infiltration (I/I) inspection program is to reduce the amount of rainwater and groundwater entering the sewer system during wet weather.

WHKS is conducting sanitary sewer inspections, sump pump/beaver drain inspections, smoke and dye testing, manhole inspections, and flow/rainfall monitoring as part of the program.

Inventory data that is collected during inspections is reported in City’s GIS system to assist with base mapping development and asset management. Based on the results of the inspections, WHKS is identifying defects within the sanitary system and recommending cost-effective repair and rehabilitation solutions to the City.

The I/I program requires an extensive public outreach component and includes attending City Council sessions and conducting public workshops to inform residents of various activities throughout the entirety of the program.


  • Sanitary sewer system analysis
  • Sump pump inspections
  • Beaver drain inspections
  • Smoke and dye testing
  • Manhole inspections
  • Flow/rainfall monitoring
  • Base and GIS mapping
  • Public involvement