Various Mission-Critical Careers in the Water/Wastewater Industry Electricians Michael Shea, Lead Electrician, San Francisco Public Utilities Commission Electronic Maintenance Technicians / Instrument Technicians Robert Estrada, Senior Electronic Technician, San Jose Water Company Engineers Luz Penilla, Assistant Mechanical Engineer, Santa Clara Valley Water District Mechanics and Machinists Danny Humrich, Maintenance Machinist, San Francisco Public Utilities Commission Wastewater Treatment Operators Maurice Harper, Wastewater Treatment Operator, San Francisco Public Utilities Commission Water Treatment & Distribution Operators Shelley Mays, Senior Distribution Operator, Contra Costa Water District length: 4:42