35 ILCS 105/
2021 Illinois Compiled Statutes|Chapter 55 - COUNTIES|55 ILCS 5/ - Counties Code.|Article 5 - Powers And Duties Of County Boards

, except newly constructed buildings and newly installed impervious paved surfaces.  Disputes regarding an exception shall be determined by a mutually agreed upon arbitrator paid by the disputing party or parties.(e)                     Before the stormwater management planning committee recommends to the county board a stormwater management plan for the county or a portion thereof, it shall submit the plan to the Office of Water Resources of the Department of Natural Resources for review and recommendations. The Office, in reviewing the plan, shall consider such factors as impacts on the levels or flows in rivers and streams and the cumulative effects of stormwater discharges on flood levels. The Office of Water Resources shall determine whether the plan or ordinances enacted to implement the plan complies with the requirements of subsection (f). Within a period not to exceed 60 days, the review comments and recommendations shall be submitted to the stormwater management planning committee for consideration. Any amendments to the plan shall be submitted to the Office for review.(f) Prior to recommending the plan to the county board, the stormwater management planning committee shall hold at least one public hearing thereon and shall afford interested persons an opportunity to be heard. The hearing shall be held in the county seat. Notice of the hearing shall be published at least once and no less than 15 days in advance of the hearing in a newspaper of general circulation published in the county. The notice shall state the time and place of the hearing and the place where copies of the proposed plan will be accessible for examination by interested parties. If an affected municipality having a stormwater management plan adopted by ordinance wishes to protest the proposed county plan provisions, it shall appear at the hearing and submit in writing specific proposals to the stormwater management planning committee. After consideration of the matters raised at the hearing, the committee may amend or approve the plan and recommend it to the county board for adoption.The county board may enact the proposed plan by ordinance. If the proposals for modification of the plan made by an affected municipality having a stormwater management plan are not included in the proposed county plan, and the municipality affected by the plan opposes adoption of the county plan by resolution of its corporate authorities, approval of the county plan shall require an affirmative vote of at least two-thirds of the county board members present and voting. If the county board wishes to amend the county plan, it shall submit in writing specific proposals to the stormwater management planning committee. If the proposals are not approved by the committee, or are opposed by resolution of the corporate authorities of an affected municipality having a municipal stormwater management plan, amendment of the plan shall require an affirmative vote of at least two-thirds of the county board members present and voting.(g) The county board may prescribe by ordinance reasonable rules and regulations for floodplain or stormwater management and for governing the location, width, course, and release rate of all stormwater runoff channels, streams, and basins in the county, in accordance with the adopted stormwater management plan. Land, facilities, and drainage district facilities used for production agriculture as defined in subsection (d) shall not be subjected to regulation by the county board or stormwater management committee under this Section for floodplain management and for governing location, width, course, maintenance, and release rate of stormwater runoff channels, streams and basins, or water discharged from a drainage district.  These rules and regulations shall, at a minimum, meet the standards for floodplain management established by the Office of Water Resources and the requirements of the Federal Emergency Management Agency for participation in the National Flood Insurance Program. With respect to DuPage County only, the Chicago Metropolitan Agency for Planning may not impose more stringent regulations regarding water quality on entities discharging in accordance with a valid National Pollution Discharge Elimination System permit issued under the Environmental Protection Act.(h) For the purpose of implementing this Section and for the development, design, planning, construction, operation, and maintenance of stormwater facilities provided for in the adopted stormwater management plan, a county board that has established a stormwater management planning committee pursuant to this Section or has participated in a stormwater management planning process may adopt a schedule of reasonable fees applicable to all real property within the county which benefits from the county's stormwater management facilities and activities, and as may be necessary to mitigate the effects of increased stormwater runoff resulting from development. The total amount of the fees assessed must be specifically and uniquely attributable to the actual costs of the county in the preparation, administration, and implementation of the  adopted stormwater management plan, construction and maintenance of stormwater facilities, and other activities related to the management of the runoff from the property.      The individual fees must be specifically and uniquely attributable to  the portion of the actual cost to the county of managing the runoff from the property. The fees shall be used to finance activities undertaken by the county or its included municipalities to mitigate the effects of urban stormwater runoff by providing and maintaining stormwater collection, retention, detention, and particulate treatment facilities, and improving water bodies impacted by stormwater runoff, as identified in the county plan. In establishing, maintaining, or replacing such facilities, the county shall not duplicate facilities operated by other governmental bodies within its corporate boundaries.  The schedule of fees established by the county board shall include a procedure for a full or partial fee waiver for property owners who have taken actions or put in place facilities that reduce or eliminate the cost to the county of providing stormwater management services to their property. The county board may also offer tax or fee rebates or incentive payments to property owners who construct, maintain, and use approved green infrastructure stormwater management devices or any other methods that reduce or eliminate the cost to the county of providing stormwater management services to the property, including but not limited to facilities that reduce the volume, temperature, velocity, and pollutant load of the stormwater managed by the county, such as systems that infiltrate, evapotranspirate, or harvest stormwater for reuse, known as "green infrastructure". In exercising this authority, the county shall provide notice to the municipalities within its jurisdiction of any fees proposed under this Section and seek the input of each municipality with respect to the calculation of the fees. The county shall also give property owners at least 2 years' notice of the fee, during which time the county shall provide education on green infrastructure practices and an opportunity to take action to reduce or eliminate the fee. All these fees collected by the county shall be held in a separate fund, and shall be expended only in the watershed within which they were collected. The county may enter into intergovernmental agreements with other government bodies for the joint administration of stormwater management and the collection of the fees authorized in this Section.A fee schedule authorized by this subsection must have the same limit as the authorized stormwater tax. In Peoria County only, the fee schedule shall not be adopted unless (i) a referendum has been passed approving a stormwater tax as provided in subsection (i) of this Section; or (ii) the question of the adoption of a  fee schedule with the same limit as the authorized stormwater tax has been approved in a referendum by a majority of those voting on the question.(i) In the alternative to a fee imposed under subsection (h), the county board may cause an annual tax of not to exceed 0.20% of the value, as equalized or assessed by the Department of Revenue, of all taxable property in the county to be levied upon all the taxable property in the county. The property tax shall be in addition to all other taxes authorized by law to be levied and collected in the county and shall be in addition to the maximum tax rate authorized by law for general county purposes. The 0.20% limitation provided in this Section may be increased or decreased by referendum in accordance with the provisions of Sections 18-120, 18-125, and 18-130 of the Property Tax Code