New Mexico Statutes Chapter 4. Counties § 4-36-5. Firefighting; county may purchase from municipalities

A. Counties may contract with municipalities or individuals for purchase of firefighting services for the county or certain areas in a county where such services are needed when, in the opinion of the board of county commissioners, such services may be more economically provided by such contracts than maintaining firefighting services by the county.

B. The contract price shall be based upon the cost of the services, the depreciation of the equipment and the cost of insurance necessary or desirable to protect the municipality from loss or claim during the time it is engaged in extraterritorial firefighting under a contract with the county. Subject to the agreement between the municipality and the county, the contract may provide for annual, monthly or actual-use payments.