Sanitary Sewer Overflows and Peak Flows
Technical and Issue Papers

• Optimization of Collection System Maintenance Frequencies and System Performance (PDF) (856KB)

This project was the end product of a 1999 cooperative agreement between EPA and the American Society of Civil Engineers (ASCE). The objective of this project was to develop an optimized approach for maintenance of separate collection systems by focusing on reducing the frequent failures of collection systems.
Date Published: 02/01/1999



• Optimizing Operation, Maintenance, and Rehabilitation of Sanitary Sewer Collection Systems

This guidance document is designed to be used by collection system owners, managers, and operators seeking to optimize the operation, maintenance, and rehabilitation of their systems. This document highlights areas of day-to-day operation and maintenance and long-term system planning that can be implemented, improved upon, or documented in order to optimize system performance, enhance program effectiveness, and reduce overall long-term costs. Developed by the New England Interstate Water Pollution Control Commission (NEIWPCC) though a grant from EPA.
Date Published: 12/01/2003
• Table of Contents (PDF) (64KB)


• Chapter 1 (PDF) (83KB)


• Chapter 2 (PDF) (82KB)


• Chapter 3 (PDF) (145KB)


• Chapter 4 (PDF) (97KB)


• Chapter 5 (PDF) (86KB)


• Chapter 6 (PDF) (62KB)


• Chapter 7 (PDF) (138KB)


• Chapter 8 (PDF) (68KB)


• Appendix A (PDF) (260KB)


• Appendix B (PDF) (320KB)


• Appendix C (PDF) (227KB)


• Appendix D (PDF) (229KB)


• Appendix E (PDF) (325KB)


• Appendix F (PDF) (277KB)


• Order Form (PDF) (186KB)


• Entire Document (PDF) (1,299KB)



• Protocols for Identifying Sanitary Sewer Overflows (PDF) (2,316KB)

Report by the American Society of Civil Engineers (ASCE) on their survey of 12 utilities that successfully employ both proactive and reactive SSO control measures, and their literature search on methods used by utilities to identify SSOs. The report describes the procedures and techniques used by the surveyed utilities for identifying overflows. The length of the collection systems reviewed ranges from 700 to 5,000 miles.
Date Published: 06/01/2000



• Sanitary Sewer Overflow Solutions

Guidance manual by the American Society of Civil Engineers (ASCE) that presents a range of solutions for sanitary sewer overflows (SSOs). Solutions for both dry and wet weather SSOs are presented. Organization of the report was derived from the Capacity, Management and Operation and Maintenance (CMOM) program. The report includes nine case studies that represent a range of approaches and investments applied by agencies to reduce their SSO problems.
Date Published: 04/30/2004
• Guidance Manual (PDF) (3,711KB)


• Two-page fact sheet (PDF) (257KB)



• Sanitary Sewer Overflows and Sewer System Maintenance

Examines the relationship between monthly SSO frequency and several major SSO factors with and emphasis on the impact of pro-active sewer system maintenance activities. This report was prepared through a cooperative agreement and is available on the EPA web site courtesy of Dr. Zhiyi Zhang of the University of North Carolina at Charlotte (EPA-832-R-98-002).
Date Published: 12/01/1998
• Cover and Table of Contents (PDF) (141KB)


• Acknowledgements (PDF) (39KB)


• Summary (PDF) (187KB)


• Section 1: Introduction (PDF) (219KB)


• Section 2: Description of Data (PDF) (254KB)


• Section 3: Model Development (PDF) (1,623KB)


• Section 4: Model Interpretation (PDF) (421KB)


• Section 5: Secondary Results (PDF) (125KB)


• References (PDF) (45KB)


• Appendix A: CHAMPS Manual (PDF) (39KB)


• Appendix B: Examples of Data (PDF) (397KB)


• Appendix C: SAS Outputs (PDF) (1,458KB)


• Appendix D: Figures (PDF) (296KB)

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Last updated on July 05, 2012 12:23 PM
URL:http://cfpub.epa.gov/npdes/docs.cfm