Md. Code, Local Government § 19–503

(a) A county may:

(1) borrow money for any public purpose; and

(2) issue and sell general obligation bonds to evidence the borrowing.

(b) By local law, a county may provide for the issuance of revenue bonds

payable as to principal and interest solely from the revenues of one or more revenue–

producing projects of the county.

(c) Notwithstanding any other provision of this subtitle, a county may issue

bonds:

(1) for sanitary facilities as provided in the Environment Article; and

(2) as authorized by local law in effect on the date the county adopts

code home rule.