The bacterial properties for a better environment have attracted a great deal of attention in recent years. This review focuses on the bacterial applications for the human and animal populations, environmental applications to improve water quality for crops, and polluted soil for changing environmental characteristics due to the expanse of polluted areas for crop production, and finally, the discussion raises other aspects and the way forward in aggressively developing bacterial technologies for environmental improvement. The review aims to capture the latest information on various potential uses of bacteria for improving environmental qualities, including benefits of the bactericidal applications for humans and animals, and environmental applications for water for crops and soil for crop growth. Several case studies are presented, where bacteria have capacities for removing heavy metals, preventing algal bloom in rivers, and reducing Oman crude oil and n-alkanes, as well as their antifungal activity, production of siderophores, induction of systemic resistance, and plant growth promotion. These examples demonstrate the implementation of successful in situ strategies of bacteria being used in different parts of the world. Results from this study suggested the potential role of bacterial magnetotactic for new options in in-situ environmental remediation of heavy metal and pose new perspectives for further studies and sustainable management of resources for overall ecosystem restoration.