(a) Maintenance. The County shall maintain the current interest and joint sinking funds to secure payment, when due, of the principal of and interest on outstanding bonds issued by the County. The joint sinking funds are special funds under § 718(a) of the Charter.
(b) Required deposits. There shall be deposited in the joint sinking funds:
(1) revenues collected from special benefit assessments and area service charges imposed with respect to water or wastewater facilities installed or constructed with proceeds from bonds sufficient to meet the annual sinking fund increments based on established bond amortization tables; and
(2) interest earned on the bond proceeds, before expenditure, and on the moneys accumulated in the funds.
(c) Interest. Maturing interest on and principal of the bonds shall be paid from the funds.
(d) Appropriations. The annual current expense budget for the County shall provide for appropriations to the funds for the revenues and disbursements as provided in this section. Whenever the revenues are insufficient to meet appropriations, the County may appropriate to the funds from net operating revenues of its water or wastewater facilities not otherwise pledged an amount sufficient to make up the deficit, or the County shall levy for that purpose under § 718(f) of the Charter.
(1985 Code, Art. 6, § 9-102)