摘要:Introduction: Environmental health (EH) services have a long history in Ethiopia, but data on environmental health services quality and the magnitude of environmental health professionals’ engagement has never been addressed. This study was conducted to assess the quality of environmental health services in different sectors and professionals’ level of engagement in Eastern Ethiopia. Methods: Institution based cross-sectional mixed study design was implemented. A cluster sampling technique was employed to select 83 participants. Data were collected using a pretested questionnaire and an interview guide. Descriptive, bivariate, multivariate, and thematic analysis was carried out. Results: Professionals’ performance in most services were reported to be average or low. Only 19.5% of participants responded as having good satisfaction in their job. The multiple logistic regression analysis showed factors associated with selected environmental health services. The odds of identifying environmental problems was associated with profession (adjusted odds ratio (AOR): 4.1; 95% confidence interval (CI): 1.3-7.6) and level of education (AOR: 3.1; 95%CI: 0.9-5.9). The factors contributing to introducing innovative solutions to EH problems were type of institution (AOR: 3.1, 95%CI = 1.6-9.3), profession (AOR: 3.4, 95%CI = 1.1-12.2), and level of support and emphasis offered (OR: 5.6, 95% CI = 2.2-11.9). Level of job satisfaction was also associated with the above-mentioned independent variables. Conclusion: The current study showed low level of professionals’ engagement and factors associated with the quality of environmental health services in different sectors. Therefore, Ethiopian Federal Ministry of Health and other concerned ministries, agencies, and authorities should intervene accordingly to improve the service and level of professionals’ engagement.