- The County of Los Angeles (Los Angeles, CA)
- …to work sites. Requirements MINIMUM REQUIREMENTS: A valid Wastewater Treatment Plant Operator 's Certificate, Grade II or higher, issued by the California ... orders or purchase small needed parts. + May supervise Assistant Wastewater Treatment Plant Operators, inmates, County wards or...Do you currently possess a valid Wastewater Treatment Plan Operator 's Certificate, Grade II or higher, issued… more