Illinois Administrative Code › Title 8 - AGRICULTURE AND ANIMALS › Part 675 - GROUNDWATER USE GUIDELINES › Subpart A - NOTIFICATION TO DISTRICT OF INCOMING SUBSTANTIAL USERS OF GROUNDWATER › Section 675.10 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
"Act" means the Water Use Act of 1983 (Ill. Rev. Stat. 1985,
				  ch. 5, par. 1601 et seq., as amended by P.A. 85-905, effective November 18,
				  1987, and P.A. 85-483, effective September 17, 1987).
"Aquifer" means a water-bearing geologic formation, group of
				  geologic formations, or part of a geologic formation that has the
				  characteristics to receive, store, and transmit groundwater.
"Artesian aquifer" or "confined aquifer" means an aquifer
				  confined from the top and bottom at a particular location such that the
				  groundwater in the aquifer is under pressure greater than the atmosphere. As a
				  result, the water level in a well tapping an artesian aquifer rises above the
				  top of the aquifer. A flowing artesian well results when pressure in the
				  artesian aquifer is sufficient to cause the water level in the well to rise
				  above the land surface.
"Artificial wants" means a use of water that may increase
				  comfort, aesthetic, and propriety, but is not essential for existence.
				  Artifical wants include, but are not limited to, street cleaning, washing
				  vehicles, and watering lawns.
"Consolidated aquifer" means an aquifer formed in hard
				  bedrock materials, such as limestone, dolomite, and sandstone.
"Critical water level" means the elevation or depth of the
				  water level for an aquifer below which suggests that the aquifer resource is
				  being depleted on a long-term basis based upon monitoring of well water
				  levels.
"Drawdown" means the difference between the static and
				  pumping water level in a well.
"High capacity well" means a well capable of producing more
				  than 100,000 gallons of groundwater a day.
"Natural wants" means the use of water that is necessary for
				  existence of man or beast. Natural wants include, but are not limited to,
				  quenching thirst; household uses of cooking, washing, bathing, and sanitation
				  purposes; watering animals or livestock; and fire protection.
"Public water supply well" means a water distribution system
				  relying on a well or wells and servicing at least 25 people for 60 or more days
				  a year.
"Pumping water level" means the resulting water level in a
				  well following a period of use.
"Static water level" or "nonpumping water level" means the
				  water level in a well which occurs during a period when the well is not being
				  used.
"Unconfined aquifer" or "water table aquifer" means an
				  aquifer that is exposed to the atmosphere through openings in the overlying
				  materials which extend to the land surface. Groundwater in an unconfined
				  aquifer is not under any additional pressure; therefore, the water level in a
				  well tapping an unconfined aquifer reflects the true top of an unconfined
				  aquifer.
"Unconsolidated aquifer" means an aquifer formed in loose or
				  uncemented materials, such as soil, sand, and gravel.
"Units of local government" mean villages, municipalities,
				  townships, counties, and water districts.
"Water table" means that surface of an unconfined groundwater
				  body which is under atmospheric pressure. The water table marks the top of an
				  unconfined aquifer.
"Well" is used synonymously with point of withdrawal and is
				  meant to include any continuous structure, such as a shaft or hole or a series
				  of connected shafts or holes in the earth, which is used for withdrawing
				  groundwater.