70 ILCS 3705/23f
Whenever revenue bonds are issued under Section 23e of this Act, the income and revenue derived from the operation of the combined waterworks and sewerage system of the district shall be used only (1) to pay the cost of operation and maintenance of the system; (2) to pay principal of and interest on any revenue bonds issued hereunder; (3) to provide an adequate depreciation fund; and (4) to create and maintain such reasonable reserves as may be provided in the ordinance authorizing the issuance of the bonds, including, without limitation, a bond reserve fund and a reserve for proposed future improvements and extensions to the system in accordance with a master plan, as the same may be amended or revised from time to time, duly approved by ordinance or resolution of the board of trustees. The depreciation fund is to be used for such replacements as may be necessary from time to time for the continued, effective and efficient operation of the system, which fund shall not be allowed to accumulate beyond a reasonable amount necessary for that purpose, the terms and provisions of which shall be incorporated in the ordinance authorizing the issuance of the bonds.
The board of trustees is authorized to charge rates and charges for the use and service of the combined waterworks and sewerage system, and to defray the costs of connections thereto, which shall be sufficient at all times (1) to pay the cost of maintenance and operation of the system, (2) to pay the principal of and interest upon all revenue bonds issued under the provisions of Section 23e of this Act, (3) to provide an adequate depreciation fund, and (4) to create and maintain such reasonable reserves as may be provided in the ordinance authorizing the issuance of any such revenue bonds, including, without limitation, a bond reserve fund and a reserve for proposed future improvements and extensions to the system in accordance with a master plan, as the same may be amended or revised from time to time, duly approved by ordinance or resolution of the board of trustees. The board of trustees may also impose upon the owner of any residential lot in a platted subdivision within the district a fair and reasonable minimum charge for availability, or readiness to serve fee, to pay a portion of the cost of having facilities available to supply service when needed. Charges or rates shall be established, revised, and maintained by ordinance and become payable as the board of trustees may determine by ordinance. Any ordinance establishing rates and charges shall be published within 30 days after its adoption in a newspaper published in the district, and if there is no such newspaper, in a newspaper published in the county and having a general circulation in the district, and shall become effective 10 days after such publication.
Such charges or rates, including any penalties for late payment, are liens upon the real estate upon or for which service is supplied or made available whenever the charges or rates become delinquent as provided by any ordinance of the district fixing a delinquency date. A lien is created under the preceding sentence only if the district sends to the owner or owners of record of the real estate, as referenced by the taxpayer's identification number, (i) a copy of each delinquency notice sent to the person who is delinquent in paying the charges or rates or other notice sufficient to inform the owner or owners of record, as referenced by the taxpayer's identification number, that the charges or rates have become delinquent and (ii) a notice that unpaid charges or rates may create a lien on the real estate under this Section. Such liens shall arise ipso facto upon the delinquency of such charges or rates; however, the district has no preference over the rights of any purchaser, mortgagee, judgment creditor, or other lien holder arising prior to the filing of a notice of such a lien in the office of the recorder of the county in which such real estate is located, or in the office of the registrar of titles of such county if the property affected is registered under the Torrens system. This notice shall consist of a sworn statement setting out (1) a description of such real estate sufficient for the identification thereof, (2) the amount of money due for such service or availability, and (3) the date when such amount became delinquent. The district shall send a copy of the notice of the lien to the owner or owners of record of the real estate, as referenced by the taxpayer's identification number. The district has the power to foreclose this lien in the same manner and with the same effect as in the foreclosure of mortgages on real estate and shall be entitled to recover its reasonable expenses and costs, including attorney's fees, incurred in connection with such foreclosure proceeding. The district may, upon the payment of such reasonable administrative fees as it may establish for the service, furnish to any requesting party current statements evidencing the status of any account and releases evidencing the payment of delinquent charges and the release, discharge and satisfaction of any lien arising therefrom.
The holder of any bond or any interest coupon of any such revenue bonds of any such district may in any civil action, mandamus or other proceeding enforce and compel the performance of all duties required by this Act and the covenants and undertakings set forth in any bond ordinance, including the making and collecting of sufficient rates and charges for the use, service or availability of the combined waterworks and sewerage system of the district, and the proper application of the income and revenue therefrom.
70 ILCS 3705/23f