Upon the certificate of the state board that the housing conditions and accommodations are adequate for the purpose, and upon the approval of the state board of health that the sanitary conditions are such as to properly safeguard the health of such poor persons as may be maintained therein, the board of chosen freeholders of any county may contract with the board of chosen freeholders of any other county to board and care for poor persons requiring permanent relief of such county.
N.J.S. § 44:4-16