Environmental FactorsPerformance of essential functions may require exposure to adverse environmental conditions, such as dirt, dust, pollen, odors, wetness, humidity, rain, fumes, smoke, extreme temperatures, extreme noises, hazardous materials, unsafe structures, heights, confined spaces, machinery, vibrations, falling objects, electric currents, traffic hazards, animal/wildlife attacks, animal bites, toxic agents, violence, disease, or pathogenic substances or explosive environments. Essential Functions Installs, maintains, repairs, and replaces water and sewer lines and related system components: locates manholes, service connections, valves and other utilities, assists with the installation of new sewer taps; clears debris from manholes, water and sewer lines, sewer stream crossings, easements, valve boxes, etc.