| YEAR | PRIMARY PARTICIPANTS | PROJECT NAME |
| 2019 | Sanitation Districts of Los Angeles County | Pilot-Scale Evaluation of ANITA Mox for Mainstream Deammonification and Phosphorous Removal |
| 2018 | Sanitation Districts of Los Angeles County & Kennedy/Jenks Consultants | |
| 2016 | Los Angeles County Sanitation Districts | Digester Gas Hydrogen Sulfide Control Using a Full-scale Biotrickling Filter |
| 2015 | City of Los Angeles Bureau of Sanitation | Terminal Island WRP Advanced Water Purification Facility Expansion Project Advanced Oxidation Process Bench and Pilot Testing |
| 2014 | Grace Robinson Hyde | Sanitation Districts of Los Angeles County |
| 2013 | William Yu | Sacramento Regional County Sanitation District |
| 2012 | Sanitation Districts of Los Angeles County | t-MBR + RO: An Improved Approach to Reclaim Secondary Effluent for Reuse |
| 2011 | East Bay Municipal Utility District | New (First-ever) PSRP-Equivalent Anaerobic Digestion Process Increases Digestion Capacity by Fifty Percent |
| 2010 | San Francisco Public Utilities Commission | Oceanside WPCP FOG-to-Biodiesel Demonstration Project |
| 2009 | County Sanitation Districts of LA County | Combining UV and Chlorination for Disinfection of Wastewater Effluents and Recycled Water |
| 2008 | Central Contra Costa Sanitary Districty | Aeration Air Renovations |
| 2007 | Sanitation Districts of Los Angeles County | Sequential Chlorination : An Innovative Approach to Minimize Byproduct Formation and Improve Disinfection Performance |
| 2006 | City of Riverside | Grease to Gas Power |
| 2005 | Carollo Engineers & Orange County Sanitation District | Plant Number 2 Headworks Replacement |
| 2004 | City of Los Angeles Bureau of Sanitation | Production of Exceptional Quality (EQ) Biosolids at the City of Los Angeles Hyperion Treatment Plant |
| 2003 | Sanitation Districts of Los Angeles County | NDN Process Research at the Valencia Water Reclamation Plant for Nitrification/Denitrification |
| 2002 | East Bay Municipal Utility District | Thermophilic Anaerobic Digestion Project |
| 2001 | Inland Empire Utilities Agency | Three Phase Digestion: A novel approach to meet Class A sludge requirements |
| 2000 | Big Bear Area Regional Wastewater Agency, Engineering Resource of Southern California and Enviroquip, Inc. | Biological Nutrient Removal at BBARWA Using the Symbio Process |
| 1999 | Dublin San Ramon Services District | Clean Water Revival Groundwater Replenishment System Performance and Reliability Evaluation |
| 1998 | Jeffrey P. Brown, P.E., Orange County SD and Anders O. Wistrom, UC Riverside | Primary Effluent Filtration (PEF): A Field Comparison of Three Filters |
| 1996 | City and County of San Francisco; James Salerno, Arleen Navarret, Paul Pitt and Tony Flores | Southeast WPCP Effluent Chlorination and Bateriological Field Study |
| 1995 | Montgomery Watson and City of Riverside | Hidden Valley Wetland Enhancement Project |
| 1994 | Douglas D. Drury; Parivash Dezham; Robert Torres; and John W. Anderson, Jr. | Separate Nitrification of Filtrates to Enhance Nitrogen Removal, Chino Basin MWD |
| 1993 | City and County of San Francisco | The Applicability of Various Combinations of Tertiary Treatment and Disinfection Technologies for High Public Contact Wastewater Reclamation: Inline Filtration, Continuous Microfiltration, Reverse Osmosis, and Ultraviolet Disinfection |
| 1992 | Orange County Water District | Prado Basin Constructed Wetlands Water Quality Improvement Project |