(40 ILCS 5/Art. 13 Pt. V heading)
Part V. Contributions and Tax Levy

    (40 ILCS 5/13‑501) (from Ch. 108 1/2, par. 13‑501)
    Sec. 13‑501. Contributions computed on actuarially funded basis. The obligations of the various annuities and benefits provided by this Article shall be financed by contributions by employees, contributions by the Water Reclamation District, income from investments and other income that may accrue to the Fund during the course of its operations. The amount to be contributed by the District for any calendar year shall be computed on an actuarially funded basis and shall be equal to the sum of the following:
        (1) For retirement and surviving spouse's annuities
     and annual increases therefore, and child's annuities, the amount determined by the Retirement Board upon recommendation of the actuary which, when added to the amounts held by the Fund to cover liabilities for such annuities and annual increases, shall be equal to the present value, according to actuarial tables in use by the Fund, of the aggregate liability of the Fund with respect to such annuities and annual increases credited or to be credited on account of service rendered or to be rendered to the end of such calendar year, after applying as a credit against such liability the accumulated employee contributions for such service.
        (2) For the current annual cash requirements
     covering administration expense, duty disability benefits and ordinary disability benefits, the amounts to be contributed by the District shall be equal to the actual payments by the Fund for these purposes.
    The District contributions provided in this Section shall be allocated for the purposes for which contributions have been made, and credited to appropriate reserve accounts established by the Board.
(Source: P.A. 87‑794.)

    (40 ILCS 5/13‑502)(from Ch. 108 1/2, par. 13‑502)
    Sec. 13‑502. Employee contributions; deductions from salary.
    (a) Retirement annuity and child's annuity. There shall be deducted from each payment of salary an amount equal to 7% of salary as the employee's contribution for the retirement annuity, including child's annuity, and 0.5% of salary as the employee's contribution for annual increases to the retirement annuity.
    (b) Surviving spouse's annuity. There shall be deducted from each payment of salary an amount equal to 1 1/2% of salary as the employee's contribution for the surviving spouse's annuity and annual increases therefor.
    (c) Pickup of employee contributions. The Employer may pick up employee contributions required under subsections (a) and (b) of this Section. If contributions are picked up they shall be treated as Employer contributions in determining tax treatment under the United States Internal Revenue Code, and shall not be included as gross income of the employee until such time as they are distributed. The Employer shall pay these employee contributions from the same source of funds used in paying salary to the employee. The Employer may pick up these contributions by a reduction in the cash salary of the employee or by an offset against a future salary increase or by a combination of a reduction in salary and offset against a future salary increase. If employee contributions are picked up they shall be treated for all purposes of this Article 13, including Sections 13‑503 and 13‑601, in the same manner and to the same extent as employee contributions made prior to the date picked up.
    (d) Subject to the requirements of federal law, the Employer shall pick up optional contributions that the employee has elected to pay to the Fund under Section 13‑304.1, and the contributions so picked up shall be treated as employer contributions for the purposes of determining federal tax treatment. The Employer shall pick up the contributions by a reduction in the cash salary of the employee and shall pay the contributions from the same fund that is used to pay earnings to the employee. The Employer shall, however, continue to withhold federal and State income taxes based upon contributions made under Section 13‑304.1 until the Internal Revenue Service or the federal courts rule that pursuant to Section 414(h) of the U.S. Internal Revenue Code of 1986, as amended, these contributions shall not be included as gross income of the employee until such time as they are distributed or made available.
    (e) Each employee is deemed to consent and agree to the deductions from compensation provided for in this Article.
    (f) Subject to the requirements of federal law, the Employer shall pick up contributions that a commissioner has elected to pay to the Fund under Section 13‑314, and the contributions so picked up shall be treated as Employer contributions for the purposes of determining federal tax treatment. The Employer shall pick up the contributions by a reduction in the cash salary of the commissioner and shall pay the contributions from the same fund as is used to pay earnings to the commissioner. The Employer shall, however, continue to withhold federal and State income taxes based upon contributions made under Section 13‑314 until the U.S. Internal Revenue Service or the federal courts rule that pursuant to Section 414(h) of the Internal Revenue Code of 1986, as amended, these contributions shall not be included as gross income of the employee until such time as they are distributed or made available.
(Source: P.A. 94‑621, eff. 8‑18‑05; 95‑586, eff. 8‑31‑07.)

    (40 ILCS 5/13‑503) (from Ch. 108 1/2, par. 13‑503)
    Sec. 13‑503. Tax levy. The Water Reclamation District shall annually levy a tax upon all the taxable real property within the District at a rate which, when extended, will produce a sum that (i) when added to the amounts deducted from the salaries of employees, interest income on investments, and other income, will be sufficient to meet the requirements of the Fund on an actuarially funded basis, but (ii) shall not exceed an amount equal to the total amount of contributions by the employees to the Fund made in the calendar year 2 years prior to the year for which the tax is levied, multiplied by 2.19, except that the amount of employee contributions made on or after January 1, 2003 towards the purchase of additional optional benefits under Section 13‑304.1 shall only be multiplied by 1.00. The tax shall be levied and collected in the same manner as the general taxes of the District.
    The tax shall be exclusive of and in addition to the amount of tax the District is now or may hereafter be authorized to levy for general purposes under the Metropolitan Water Reclamation District Act or under any other laws which may limit the amount of tax for general purposes. The county clerk of any county, in reducing tax levies as may be authorized by law, shall not consider any such tax as a part of the general tax levy for District purposes, and shall not include the same in any limitation of the percent of the assessed valuation upon which taxes are required to be extended.
    Revenues derived from the tax shall be paid to the Fund for the benefit of the Fund.
    If the funds available for the purposes of this Article are insufficient during any year to meet the requirements of this Article, the District may issue tax anticipation warrants or notes, as provided by law, against the current tax levy.
    The Board shall submit annually to the Board of Commissioners of the District an estimate of the amount required to be raised by taxation for the purposes of the Fund. The Board of Commissioners shall review the estimate and determine the tax to be levied for such purposes.
(Source: P.A. 92‑599, eff. 6‑28‑02.)

    (40 ILCS 5/13‑504) (from Ch. 108 1/2, par. 13‑504)
    Sec. 13‑504. Mortality tables and interest rates. All reserves and liabilities for annuities under this Article shall be computed according to actuarial tables adopted by the Board.
    At least once every 5 years a valuation shall be made by the actuary of the liabilities and reserves of the Fund, including a general investigation of the mortality, retirement, employment turnover, interest, and earnable compensation experience of the Fund, and a report thereon shall be made to the Board. The actuary shall recommend to the Board such actuarial tables and rates of interest as are required in the operation of the Fund.
    For computing retirement and surviving spouse's annuities, all employee contributions in the form of salary deductions or otherwise, and all concurrent contributions by the District shall be improved in an amount equal to 3% per annum from the date contributions become due or have accrued to the date an annuity is applied for and becomes payable.
(Source: P.A. 87‑794.)