(a) Except in those cases in which a service or other charge for delayed payment is otherwise specifically provided, there is hereby levied upon all sums due to this Municipality a service charge in the sum of one and one-half percent (1-1/2%) per month or ten dollars ($10.00) per month whichever is the larger upon all debts owed to this Municipality which are not paid within thirty days of the date of invoice.
(b) The Finance Director is hereby directed to assess and collect the service charge provided in subsection (a) hereof upon all moneys not paid within thirty days.
(1980 Code 35.07)