Maintain knowledge of wastewater treatment processes, compliance requirements, operations and maintenance requirements, and reporting/record keeping; requirements, including the ability to troubleshoot wastewater equipment and processes and perform wastewater tests and interpret results. Moderate to heavy exposure to sun, dirt, dust, pollen, odors, wetness, humidity, biological hazards, rain, temperature and noise extremes, hazardous materials and chemicals, machinery, moving mechanical parts, vibrations, electric currents, traffic hazards, and water hazards are common.