An urban–rural dichotomy currently exists in policy documentation, accessibility to resources, and human rights. In Brazil, there remains a significant deficit in water and sanitation services coverage, particularly in rural areas. To achieve universal access to water, the legal framework addresses the development of decentralization actions and co-participation in management. As a result, a community-managed water supply (CMWS) has emerged as the social tool in which the community effectively participates in decision-making and oversees the operation and maintenance of water systems. The long-term sustainability of these systems is affected by critical factors in implementation, management, and maintenance. However, no strategic plan exists to solve/mitigate the critical factors commonly associated with CMWS. We proposed an action plan with multiscale intersectoral management strategies to guarantee water security for rural populations. The strategies were separated into areas of responsibility discussed in the recent literature and evaluated by experts. The strategies at the national level were related to institutional aspects and policy formulation. At the local level, the strategies were related to supporting CMWS from project implementation to post-construction. Finally, at the community level, the strategies were related to the quality and financial recognition of the services.