The "Safe Beaches, Safe Swimmers Act" is designed to ensure continuous lifeguard staffing at designated federal swimming locations , which include areas managed by the National Park Service, U.S. Fish and Wildlife Service, Bureau of Land Management, and Bureau of Reclamation. If the Secretary of the Interior determines there is a staffing shortage at such a location, the bill requires the Secretary to seek agreements with local government agencies to provide their lifeguards. These local lifeguards would then adequately staff the federal swim locations during normal seasonal operating hours, ensuring visitor safety and providing necessary rescue and first aid services. A key provision of the bill mandates that the Secretary reimburse these local government agencies for all reasonable costs incurred in carrying out these agreements. Additionally, any existing agreements for lifeguard services must be amended to ensure full reimbursement to the local agencies, regardless of prior cost-sharing terms.