- Pumping: Fundamentals for the Water and Wastewater Maintenance Operator by Frank R. Spellman, Joanne Drinan, 2001-01-15
- Spellman's Standard Handbook for Wastewater Operators: Volume I, Fundamental Level, Second Edition by Frank R. Spellman, 2010-08-30
- Industrial Wastewater Treatment by Activated Sludge by Derin Orhon, Fatos Germirli Babuna, et all 2009-01-15
- Standard Methods: For the Examination of Water and Wastewater, 18th Edition by Arnold E. Greenberg, 1992
- Ecological Planning, Design, & Engineering. Solving Global Water Crises: New Paradigms in Wastewater and Water Treatment. Small and On-Site Systems for Water Self-Sufficiency and Sustainability. by Jo-Shing Yang, 2007-10-20
- Practical Wastewater Treatment by David L. Russell, 2006-09-12
- Wastewater Treatment: Biological and Chemical Processes (Environmental Science and Engineering / Environmental Engineering) by Mogens Henze, Poul Harremoes, et all 2010-11-02
- Water-Quality Trading: A Guide for the Wastewater Community by Cy Jones, Lisa Bacon, et all 2005-10-13
- Wastewater Operator Certification Study Guide by John Giorgi, 2009-08
- Safe Work Practices for Wastewater Treatment Plants, Second Edition by Frank R. Spellman, 2000-10-31
- Water and Wastewater Project Development by Frank Rendell, 1999-01-01
- Math for Wastewater Treatment Operators Grades 1 & 2 by John Giorgi, 2009-02-18
- Upgrading Wastewater Treatment Plants, Second Edition (Water Quality Management Library) by Glen T. Daigger, 1998-06-09
- Small & Decentralized Wastewater Management Systems by Ronald Crites, George Tchobanoglous, 1998-04-02
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