Water resource recovery facility operators and maintenance staff are responsible for the protection of the environment and public health by ensuring excellent process control and equipment function. The processes and equipment used at these facilities are very complex and require continuous training. Standards for Operation of Water Resource Recovery Facilities, WEF 11, ensures that these critical personnel have the information they need to understand each process, make informed process control decisions, and recognize the basic requirements of preventive maintenance and troubleshooting. Coverage includes: Liquid Treatment. Solids Treatment Process Performance Improvements Fundamentals of Management Permit Compliance and Wastewater Treatment Systems Industrial Wastes and Pretreatment Safety Management Information Systems–Reports and Records Process Instrumentation Pumping of Wastewater and Sludge Chemical Storage, Handling, and Feeding Utilities Maintenance Odor Control Integrated Process Management Training Outsourced Operations Services and Public/Private Partnership