An employee in this class is responsible for collecting representative on-site samples at predetermined locations, collecting various samples for analytical procedures, performing physical and chemicals tests, following established laboratory procedures, and obtaining data required for process control and plant efficiency determinations. Collects samples from water and/or wastewater plants, predetermined locations throughout the distribution systems, drinking water production wells, wells with specialized sampling equipment and apparatus, and possibly samples from canals, rivers, lakes, and ocean with or without specialized sampling equipment.