(a)(1) Except as provided in subsections (c) and (d) of this section, if an owner of real property fails to pay District water and sanitary sewer service charges in full accordance with § 34-2407.01, for all bills rendered which remain unsatisfied for 60 days or more the Mayor may file a certificate of delinquency with the Recorder of Deeds.
(2) Upon filing, the certificate of delinquency shall constitute a continuing lien against the real property and show the amount of unpaid charges for District water and sanitary sewer services. The continuing lien shall be for the current full amount of the unpaid water and sanitary sewer service charges, penalties, interest, and administrative costs.
(3) The Mayor may enforce the lien if any water and sanitary sewer service charges remain unpaid for more than 180 days from the date the bill is rendered or for more than 15 days after a final decision of an appeal challenging the bill, whichever is later in the same manner that real property tax liens are enforced pursuant to Chapter 13 and Subchapter IV of Chapter 13A of Title 47.
(4) The real property may be sold for the unpaid water and sanitary sewer charges, penalties, interest and administrative costs at a tax sale in accordance with the provisions for the sale of property for delinquent real property taxes pursuant to Chapter 13 of Title 47.
(5) If any real property sold for unpaid water and sanitary sewer service charges is not redeemed by the owner within 180 days from the date of sale, including payment of 2% interest for each month until the property is redeemed, the Mayor shall furnish a deed to the purchaser or holder of the certificate of sale in accordance with § 47-1304.
(6) Proceeds from the sale that represent unpaid water charges shall be credited to the Water and Sewer Enterprise Fund of the District of Columbia as established by § 47-375(g).
(b) A lien for water and sanitary sewer charges shall have priority over any other lien, except a lien for District taxes. The lien for water and sanitary sewer service charges shall remain in effect until the charges set forth in the certificate and any accrued additional charges, interest, penalties, and administrative costs are paid in full. Upon final payment of any delinquent charges, penalties, interest, and administrative costs, the Mayor shall file promptly a certificate of satisfaction with the Recorder of Deeds.
(c) The Mayor may defer or forgive, in whole or in part, any water and sanitary sewer service charges due the District for any qualified real property pursuant to § 6-1503.
(d) The Mayor shall not sell the residence of an owner who occupies a single family home for failure to pay District water and sanitary sewer charges in accordance with subsection (a) of this section.