The water pollution control works and drinking water facilities financing program is established for the purpose of making loans available to eligible entities to finance all or part of the costs of projects. The program shall be a joint and cooperative undertaking of the department and the authority. The department and the authority may enter into and provide any agreements, documents, instruments, certificates, data, or information necessary in connection with the operation, administration, and financing of the program consistent with this part, the Safe Drinking Water Act, the Clean Water Act, the rules of the department and the commission, the rules of the authority, and other applicable federal and state law. The authority and the department may act to conform the program to the applicable guidance and regulations adopted by the United States environmental protection agency.