Background: Workers in sewage treatment plants exposed to many occupational hazards and risks during performing their duties all over the day. Aim of the study: To assess the occupational health hazards among workers in Sewage Treatment Plants. Research design: A descriptive research was utilized. Setting: The study was conducted at sewage treatment plants and lifting stations at Benha City. Study subjects: A Convenience sample of all sewage treatment plants and lifting stations presented at Benha City 220 worker divided around 3 treatment plants and 9 lifting station at Benha City. Tools of data collection: Two tools were used; Tool I: A Structured interviewing questionnaire divided into four parts: First part: It was concerned with A: Socio-demographic characteristics of the studied sewage workers & B: Characteristics of work of the studied sewage workers, second part: health problems of the workers during last six months, third part: knowledge of the workers about occupational hazards, safety measures and first aids, fourth part: workers' reported practices regarding first aids related exposed occupational hazards and Tool II: Observational check-list to assess environmental safety condition. Results: 14.1% of the studied workers had tachypnea, 20.5% of them had gastrointestinal problems and H pylori, 73.6% of the studied sewage workers had poor knowledge and 65.5% of the studied sewage workers had unsatisfactory total practices regarding first aid practices. Conclusion: The majority of the studied sewage workers had health problems and the total practices score of the studied sewage workers were unsatisfied. Recommendations: Conducting health education program for sewage workers about occupational health hazards and preventive measures.