Collection Systems & Conveyance

The system of underground pipes and maintenance structures that convey wastewater has brought dramatic improvements to public health. Most sewers carry wastes from households and commercial establishments and are referred to as sanitary sewers. U.S. EPA estimates the U.S. has about 805,000 km (500,000 miles) of publicly-owned sanitary sewers with a similar expanse of privately-owned sewer systems.


The latest collections systems and conveyance articles, videos, and other content from throughout the organization and across the water sector.

Industrial Water Resources
Save Big on WEF Publications Through 12/23

Save up to 30% on print and digital WEF publications through the end of the year!

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Industrial Water Resources
WEFTEC 2023 Exceeds Expectations

This year’s WEFTEC, the Water Environment Federation's Technical Exhibition and Conference, lived up to its reputation as the water sector's leading marketplace for ...

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Winners Crowned in 36th Operations Challenge Competition

If you heard cheering while exploring the WEFTEC exhibition, chances are high that it came from Operations Challenge — widely considered the water sector’s most ...

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Featured Collection Systems Resources

The featured resources below are just a sample of everything WEF has to offer. Search our entire website and technical resource database for more.


Technologies for CMOM Activities in Wastewater Collection Systems

This publication identifies technologies to further your transition into more preventive and even predictive operations & maintenance (O&M) activities.

Get the book today

LinkedIn Discussion Forum

Join this active discussion on topics relating to collection systems on LinkedIn. The group allows members to network with and learn from other water quality experts. Receive updates on WEF education and training on this subject.

Join the Discussion

Wastewater Collection Systems Management

The 7th edition of WEF Manual of Practice No. 7 provides guidance, strategies, and ideas that may be used by a wastewater collection system manager to be successful within these many fields of expertise.

Get MOP 7

Skills Builder

Put your knowledge to the test with WEF Skills Builder. These quizzes incorporate math, safety, and a variety of other topics to help you test, maintain, and advance your wastewater knowledge.

Take a Quiz or Two

Trenchless Technology and Asset Management

Co-published by the National Association of Sewer Service Companies (NASSCO), this book provides detailed, straightforward coverage of the assessment, management, and repair of pipeline infrastructure using trenchless technologies.

Get the book

Private Property Virtual Library

Created by the Collection Systems Community, the PPVL is a free online repository of private property programs across the nation. Utilities can seek information or advice about private property programs as well as share their case studies.

Enter the PPVL

Wastewater Collection System Operator Certification Studybook

The 2nd edition of this study book provides thorough coverage of the main topics every certified wastewater collection operator needs, including support systems, operation and maintenance, supervision and management, safety procedures, design and construction, electrical pumps and motors, and mathematics.

Get the study book

Design of Wastewater and Stormwater Pumping Stations

This 3rd edition is intended for design professionals, it addresses design of stations of all sizes and highlights the differences between wastewater and stormwater stations. 

Get MOP FD-4

Collection Systems Community

Comprised of experts in collection systems practices, the CSC is the resource for many of WEF’s collection systems activities and offerings. CSC covers collection system design, management, operation, and maintenance.

The community meets thrice annually at WEFTEC in September, the Midyear Meeting in January, and at the annual Collection Systems Conference. CSC also has numerous active and ongoing projects throughout the year.

Join the CSC

Join or Renew Your WEF Membership Today

Connect with our community of water professionals who ensure that our local communities have access to clean water that protects public health. Explore our member benefits and find the membership type that’s right for you.

Join or Renew Online

Visit Our Community Platform

This virtual workspace, called WEFUnity, empowers WEF members to network and collaborate in an online environment.

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WEF is a source of high-quality technical resources featuring the latest research, news, and education. WEF's members and other credible resources have created and compiled this information into the Practice Area groupings listed in the dropdown menu.