Wastewater Treatment Workers Wastewater treatment workers treat sewer and storm water to remove impurities and then release the water to rivers, oceans, or recycled irrigation and landscaping networks. Operators in wastewater plants use mechanical equipment, treatment tanks, and chemicals to clean the water. This variety of processes can pose a mixture of hazards to workers. Because there is so much water involved in the treatment process, slips, trips, and falls are the main hazard for wastewater treatment workers. Practice good housekeeping by sweeping up or squeegeeing water puddles. Mark areas that are prone to puddling. Fix leaks promptly. Use flooring surfaces that...