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415 ILCS 30/3

    (415 ILCS 30/3) (from Ch. 111 1/2, par. 116.113)
    Sec. 3. Definitions. As used in this Act, unless the context otherwise requires:
    (a) "Construction" means all acts necessary to obtaining ground water by any method, including without limitation the location of and the excavation for the well, but not including prospecting, surveying or other acts preparatory thereto, nor the installation of pumps and pumping equipment.
    (b) "Department" means the Department of Public Health.
    (c) "Director" means the Director of Public Health.
    (d) "Modification" means the alteration of the structure of an existing water well, including, but not limited to, deepening, elimination of a buried suction line, installation of a liner, replacing, repairing, or extending casing, or replacement of a well screen. Pertaining to closed loop wells, "modification" also means any alteration to the construction of the bore hole of an existing closed loop well, including, but not limited to, regrouting and installation of additional bore holes.
    (e) "Water well" means any excavation that is drilled, cored, bored, washed, driven, dug, jetted or otherwise constructed when the intended use of such excavation is for the location, diversion, artificial recharge, or acquisition of ground water, but such term does not include an excavation made for the purpose of obtaining or prospecting for oil, natural gas, minerals or products of mining or quarrying or for inserting media to repressure oil or natural gas bearing formation or for storing petroleum, natural gas or other products or for observation or any other purpose in connection with the development or operation of a gas storage project.
    (f) "Public water system", "community water system", "non-community water system", "semi-private water system" and "private water system" have the meanings ascribed to them in the Illinois Groundwater Protection Act.
    (g) "Potential route", "potential primary source" and "potential secondary source" have the meanings ascribed to them in the Environmental Protection Act.
    (h) "Closed loop well" means a sealed, watertight loop of pipe buried outside of a building foundation intended to recirculate a liquid solution through a heat exchanger but is limited to the construction of the bore hole, piping in the bore hole, heat exchange fluid, and the grouting of the bore hole and does not include the piping and appurtenances used in any other capacity. "Closed loop well" does not include any horizontal closed loop well systems where grouting is not necessary by law or standard industry practice.
    (i) "Monitoring well" means a water well intended for the purpose of determining groundwater quality or quantity.
    (j) "Closed loop well contractor" means any person who installs closed loop wells for another person. "Closed loop well contractor" does not include the employee of a closed loop contractor.
(Source: P.A. 97-363, eff. 8-15-11; 98-951, eff. 8-15-14.)