| 2019 |
Steven Ray |
Fairfield-Suisun Sewer District |
| 2018 |
Ignacio Just |
City of Santa Barbara |
| 2017 |
Mauricio Marin |
Victor Valley Wastewater Reclamation Authority |
| 2016 |
Jon Farr |
Central Marin Sanitation Agency |
| 2015 |
Casey Larsen |
San Elijo Joint Powers Authority |
| 2015 |
Mary Jo Ramey |
Central Marin Sanitation Agency |
| 2014 |
Russ Turnbull |
Central Marin Sanitation Agency |
| 2013 |
Robert Hulsmann |
West Bay Sanitary District |
| 2012 |
Jay Eason |
County of Santa Cruz |
| 2011 |
Mauricio Marin |
Victor Valley Wastewater Reclamation Authority |
| 2010 |
Casey Larsen |
San Elijo Joint Powers Authority |
| 2009 |
Michael Murphy |
County of Santa Cruz |
| 2008 |
Bob Sellards |
Big Bear Area Regional Wastewater Authority |
| 2007 |
Bud Galipeaux |
County of Santa Cruz |
| 2006 |
Luke Castell |
South Bay System Authority |
| 2005 |
Timothy Tompsett |
City of Fresno |
| 2004 |
Don Parker |
Central Contra Costa SD |
| 2003 |
Max Fenton |
City of Santa Cruz |
| 2002 |
Ember Black |
OMI |
| 2001 |
Frank Cunningham |
City of Santa Cruz |
| 2000 |
Mark Parli |
Encina Wastewater Authority |
| 1999 |
Michael Leone |
Eastern MW |
| 1998 |
Ken Goos |
Vallejo S&FCD |
| 1997 |
Frank Silveira |
Vallejo S&FCD |
| 1996 |
Doug Boss |
Vallejo S&FCD |
| 1995 |
Del Olson |
City of Turlock |
| 1994 |
Mike Mosley |
Union SD |
| 1993 |
Robert Josephson |
Vacaville |
| 1992 |
Kit Groves |
Central Marin SA |
| 1991 |
Kevin Ferrell |
Tahoe City PUD |
| 1990 |
Tom Briggs |
TTSA |
| 1989 |
Del Williams |
Tahoe Truckee SD |
