Maryland Code, Environment § 9-686

(1) Be dated;

(2) Bear interest at the rate or rates that the sanitary commission determines;

(3) Bear the seal of the district;

(4) Be signed for the district;

(5) Bear maturity dates that:

(6) Subject to the limitation on liability of each member county of a multiple county district under § 9-696 of this subtitle, be endorsed by each member county as follows: “The payment of interest when due and the principal at maturity is guaranteed by .......... (name of member county), Maryland”.