Collection Systems and Conveyance Involvement Overview

Collection Systems Community (CSC)
Comprised of experts in collection systems practices, the CSC is the resource to many of WEF’s collection systems activities and offerings. Keep up with collection systems news and happenings through the WEF CSC Member Association Outreach E-Newsletter!

Collection Systems Specialty Conference
This annual event draws professionals from around the country who share a common interest in upgrading and improving the efficiency of their collection systems. 

Operations Challenge Competition at WEFTEC
This competition showcases the skills of wastewater collection and treatment personnel in the Collections, Laboratory, Maintenance, Process Control, and Safety events.

Collection Systems Discussion Forum
Join this active discussion on topics relating to collection systems on LinkedIn.

Related Websites

The National Association of Sewer Service Companies (NASSCO) is committed to setting industry standards for the assessment, maintenance and rehabilitation of underground infrastructure, and to assure the continued acceptance and growth of trenchless technologies. 

Known for their training and certification program on the evaluation of pipeline condition assessment, NASSCO offers several programs such as:

• Pipeline Assessment and Certification Program (PACP);
• Manhole Assessment and Certification Program (MACP); and
• Lateral Assessment and Certification Program (LACP).

NASSCO currently is developing initiatives, including the Inspector Training & Certification Program for Pipebursting (ITCP-PB). Other courses in the Inspector Training & Certification series focus on Cured-in-Place Pipe and Manhole Rehabilitation.

TECHNICAL RESOURCES

 Books and Guides

• Existing Sewer Evaluation and Rehabilitation, MOP FD-6 
  The most comprehensive, up-to-date manual available on sewer system maintenance, repair, rehabilitation, and replacement. Addresses sanitary, storm, and combined sewer systems. 

• Trenchless Technology and Asset Management
  WEFPress Book. 2004.  Covers the latest techniques and materials for high-demand trenchless technology methods

Fact Sheets

All fact sheets were produced by members of the Collection Systems Committee and are available for download.

• Sanitary Sewer Rehabilitation
  Sanitary sewer rehabilitation through repair and renewal is a common practice to reduce extraneous flow, and address structural defects. This fact sheet serves as a basic resource for practitioners providing rehabilitation information, methods and key industry references.
  
  
• Sanitary Sewers Systems: Rainfall Derived Infiltration and Inflow (RDII) Modeling
  RDII simulation models are commonly used as one of the key tools in characterizing system wet weather response, evaluating needs, and predicting performance within I/I reduction and remediation programs. This fact sheet serves as a resource and reference guide for utility managers, practitioners and educators.

• Private Property Inflow and Infiltration Fact Sheet 
  Infiltration and inflow (I/I) of extraneous stormwater and groundwater to sanitary sewers can overwhelm the conveyance capacity of sewers and is a significant cause of system overflows. Sewer laterals, which connect buildings on private properties to sewer mains, are often a significant source of I/I.

  This fact sheet outlines key considerations for municipal utilities establishing a framework for private property I/I (PPII) mitigation activities. Cross-references are made to a number of interrelated fact sheets that are either currently available or in development on a range of sanitary sewer I/I topics. The complete set of I/I fact sheets provides comprehensive information on I/I management.

• Sanitary Sewers Fact Sheet

Technical Reports

Technical Reports were produced by various WEF Committees and Task Forces, and are available for download.  

• Deep Tunnels: Lessons Learned from Around the World
  On April 12, 2018, WEF co-hosted a Deep Tunnels Workshop in conjunction with WEF’s Collection Systems Conference in Virginia Beach, Virginia.  The Deep Tunnels Workshop and this follow-up report provide a great deal of information on design, construction, operations and maintenance, and resilience of five significant deep tunnel systems in service in the world.

Other Resources

• Webcasts
  Past webcast recordings are available on collection systems topics such as Private Property Issues, Flow Monitoring, and 100-Year Storms. 
  
  
• Core Attributes of Effectively Managed Wastewater Collection Systems; APWA, ASCE, NACWA, WEF (2010)
  In the absence of clear federal guidelines, these baseline attributes were developed to provide guidance for wastewater agency collection system managers to evaluate their existing collection system programs, and to confirm they are performing according to industry good engineering practices.