(a) Bills for the monthly utility charges and fees shall be submitted and shall be payable within 30 days from the billing date. If such monthly bill shall be and remain unpaid on and after the 30-day grace period, water and sewer service shall be subject to cutoff. If such monthly bill is not paid in full by the 30th day following that for which a billing has been rendered, an amount equal to ten percent of such bill due shall be added as a late charge. Upon failure of any user to pay within 60 days from being billed, the city shall cut off or cause to be shut off the connection of such user and shall not furnish him or permit him to receive from the system further service until all obligations owed by him to the city on account of the services shall have been paid in full. If such sewer service is shut off, before such service shall be restored the user thereof shall pay a reinstatement fee in the amount as set forth in appendix B to this code, in addition to any other charges, late charges or penalties due. The city shall also have a lien on any parcel or property affected by any unpaid balance of article II of this chapter. Such lien shall be superior and paramount to the interest on such parcel or property of any owner, lessee, tenant, mortgagee or other person, except the lien of county taxes, and shall be on a parity with the lien of any such county taxes. If any such service shall not be paid as and when due and shall be in default for 30 days or more, the unpaid balance thereof and all interest accrued thereon, together with attorney's fees and costs, may be recovered by the city in a civil action, and any such lien and accrued interest may be foreclosed or otherwise enforced by the city by action or suit in equity as for the foreclosure of a mortgage under the property.

(b) If the fees in subsection (a) of this section shall not be paid when due, any unpaid balance thereof and all interest accruing thereon shall be a lien on any parcel or property affected thereby. Such lien shall be superior and paramount to the interest on such parcel or property of any owner, lessee, tenant, mortgagee or other person, except the lien of county taxes, and shall be on a parity with the lien of any such county taxes. Failure of users to pay for fees within 30 days of the billing date shall be a violation of this chapter. In addition, the city shall have the right to seek enforcement and collection of the overdue fee through civil proceedings in a court of competent jurisdiction, including a reasonable attorney's fee and costs, and any such lien and accrued interest may be foreclosed or otherwise enforced by the city by action or suit in equity as for the foreclosure of a mortgage on real property.