Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 601 - INTRODUCTION › Section 601.105 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
a) For 35 Ill. Adm.
			 Code 601, 602, 603, and 604, unless a different meaning of a word or term is
			 clear from the context:
"Act" means the Environmental Protection Act [415 ILCS
				5 ].
"Agency" means the Illinois Environmental Protection
				Agency.
"Air Gap" means the unobstructed vertical distance through the
				free atmosphere between the water discharge point and the flood level rim of
				the receptacle.
"Atmospheric Vacuum Breaker" means a device designed to admit
				atmospheric pressure into a piping system whenever a vacuum is caused on the
				upstream side of the receptacle.
"Aquifer Property Data" means the porosity, hydraulic
				conductivity, transmissivity, and storage coefficient of an aquifer, head, and
				hydraulic gradient.
"Board" means the Illinois Pollution Control Board.
"Boil Order" means a notice to boil all drinking and culinary
				water for at least five minutes before use, issued by the proper authorities to
				the consumers of a public water supply affected, whenever the water being
				supplied may have become microbiologically contaminated.
"Certified Laboratory" means any laboratory certified under
				Section 4(o) of the Act or certified by USEPA for the specific parameters to be
				examined.
"Chlorine"
"Chlorine Demand" means the difference between the amount of
				chlorine applied to a given water and the amount of total available chlorine
				remaining at the end of the contact period. All test conditions (contact time,
				pH, and temperature) must be given, expressing the chlorine demand in a given
				water.
"Combined Chlorine" means the reaction product formed when
				chlorine has reacted with ammonia to form chloramines.
"Free Chlorine" means the residual chlorine existing in water
				as the sum of hypochlorous acid and hypochlorite ion.
"Total Chlorine" means the sum of the free chlorine and the
				combined chlorine.
"Community Water Supply" or "CWS"
means a public water
				supply which serves or is intended to serve at least 15 service connections
				used by residents or regularly serves at least 25 residents
.
				[415 ILCS
				5/3.145 ]
"Confined Geologic Formations" are geologic water-bearing
				formations protected against the entrance of contamination by other geologic
				formations.
"Conventional Filtration Treatment" means a series of
				processes, including coagulation, flocculation, sedimentation, and filtration
				resulting in substantial particulate removal.
"Cross-connection" means any physical connection or arrangement
				between two otherwise separate piping systems where flow from one system to the
				other is possible.
"CT" or "CTcalc" is the product of
				"residual disinfectant concentration" (RDC or C) in mg/L determined before or
				at the first customer, and the corresponding "disinfectant contact time" (T) in
				minutes. If a supplier applies disinfectants at more than one point prior to
				the first customer, it must determine the CT of each disinfectant sequence
				before or at the first customer to determine the total percent inactivation or
				"total inactivation ratio". In determining the total inactivation ratio, the
				supplier must determine the RDC of each disinfection sequence and corresponding
				contact time before any subsequent disinfection application points.
"Disinfectant" means any agent, including chlorine, chlorine
				dioxide, chloramines, and ozone, added to water in any part of the treatment or
				distribution process, that is intended to kill or inactivate pathogenic
				microorganisms.
"DPD Method" means an analytical method for determining
				chlorine residual utilizing the reagent DPD
				(n-diethyl-p-phenylenediamine).
"Effective External Linkage" is the ability of a water system
				to communicate and exchange information with water customers, regulators,
				technical and financial assistance organizations, and other entities that
				routinely interact with the water system.
"Groundwater" means underground water which occurs
				within the saturated zone and geologic materials where the fluid pressure in
				the pore space is equal to or greater than atmospheric pressure.
[415 ILCS
				5/3.210 ]
"Head" means the sum of the elevation head, pressure head, and
				velocity head at a given point in an aquifer.
"Hydraulic Conductivity" means the rate of flow in gallons per
				day (gpd) through a cross section of one square foot
				(ft2) under a unit hydraulic gradient
				(gpd/ft2).
"Hydraulic Gradient" means the rate of change of total head per
				unit distance of flow in a given direction.
"Infrastructure" means all mains, pipes, and structures through
				which water is obtained and distributed to the public, including wells and well
				structures, intakes and cribs, pumping stations, treatment plants, reservoirs,
				storage tanks, and appurtenances, collectively or severally, actually used or
				intended to be used to furnish water for drinking or general domestic
				use.
"Interconnection" means a physical connection between two or
				more community water supply systems.
"Maximum Average Daily Demand" or "Maximum Demand" means the
				highest average daily production over seven consecutive days.
"New Community Water Supply" means, beginning after October 1,
				1999, all new community water supplies and those water supplies that expand
				their infrastructure to serve or intend to serve at least 15 service
				connections used by residents or regularly serve at least 25 residents. Any
				water supply that is not currently a community water supply but adds residents
				so that the total served is 25 residents or more without constructing
				additional infrastructure will become a community water supply but will not be
				required to demonstrate capacity under 35 Ill. Adm. Code
				602.103 unless the community
				water supply is on restricted status as required by 35 Ill. Adm. Code
				602.106.
"Non-community Water Supply" means
a public water
				supply that is not a community water supply
. [415 ILCS
				5/3.145 ]
"Official Custodian" means
an individual who is
				an
officer of an
entity that
is the owner of a
community
water supply
and acts as the owner's agent
				in matters concerning the community water supply
. [415 ILCS
				45/9.4 ]
"Porosity" means the percentage of the bulk volume of a rock or
				soil that is occupied by interstices, whether isolated or connected, as defined
				by the ratio of the pore volume to the total volume of a representative sample
				of the medium.
"Public Water Supply" means all mains, pipes, and
				structures through which water is obtained and distributed to the public,
				including wells and well structures, intakes and cribs, pumping stations,
				treatment plants, reservoirs, storage tanks, and appurtenances, collectively or
				severally, actually used or intended for use for the purpose of furnishing
				water for drinking or general domestic use and which serve at least 15 service
				connections or which regularly serve at least 25 persons at least 60 days per
				year.
[415 ILCS 5/3.365 ]
"Responsible Operator in Charge"
means an individual
				who is designated as a Responsible Operator in Charge of a community water
				supply
under Section 1 of the Public Water Supply Operations Act
				[415 ILCS
				45/1 ] and 35 Ill. Adm. Code 603. [415 ILCS
				45/9.6 ]
"Satellite Supply" means any community water supply
				that:
purchases all finished water from another community water
				supply;
does not provide any treatment other than chlorination or
				corrosion control; and
distributes finished water to the consumers.
"Sell Water" means to deliver or provide potable water,
				obtained from a public water supply subject to this Chapter, to the consumer,
				who is then individually or specifically billed for water service, or where any
				monetary assessment is levied or required and specifically used for water
				service. Water supply facilities owned or operated by political subdivisions,
				homeowners' associations, and not-for-profit associations, as well as privately
				owned utilities regulated by the Illinois Commerce Commission, are considered
				to sell water whether or not a charge is specifically made for water.
"SEP" means special exception permit.
"Service Connection" is the opening, including all fittings and
				appurtenances, at the water main through which water is supplied to the user
				through a water service line.
"Storage Coefficient" means the volume of water an aquifer
				releases from or takes into storage per unit surface area of the aquifer per
				unit change in head.
"Surface Water" means all tributary streams and drainage
				basins, including natural lakes and artificial reservoirs, which may affect a
				specific water supply above the point of water supply intake.
"Surface Water Supply Source" means any surface water used as a
				water source for a public water supply.
"Supply" means a community water supply.
"Transmissivity" means the rate in gallons per minute (gpm), at
				which water is transmitted horizontally through a unit width by the total
				saturated thickness of an aquifer, in feet (ft), under a unit hydraulic
				gradient (gpm/ft).
"Water Main" means any pipe for distributing potable water that
				serves or is accessible to more than one property, dwelling, or rental unit and
				is exterior to buildings.
"Water Service Line" means any pipe from the water main or
				source of potable water supply that serves or is accessible to not more than
				one property, dwelling, or rental unit of the user.
"Well Hydraulics" means equations that are applied to
				understand the effect that a pumping well structure has on inducing the
				movement of water through permeable rock formations and certain aquifer
				properties to determine the rate of withdrawal of the well. This term is
				inclusive of equations that quantify wellbore skin effects/well loss.
"Wellhead Protection Area" or "WHPA" means the surface and
				subsurface recharge area surrounding a community water supply well or well
				field, delineated outside of any applicable setback zones (under Section
				17.1 of the Act) established
				under Illinois' Wellhead Protection Program, through which contaminants are
				reasonably likely to move toward the well or well field.
"Wellhead Protection Measures" means management practices
				needed to mitigate existing and future threats to the water quality within the
				delineated WHPA.
"Wellhead Protection Program" means the Wellhead Protection
				Program for the State of Illinois, approved by USEPA under section 1428 of the
				SDWA (42 U.S.C.
				300h-7).
b) Terms not specifically defined in
			 subsection (a), will have the meanings ascribed in 35 Ill. Adm. Code
			 611.
c) Terms not specifically
			 defined in subsection (a) or (b) will have the meanings specified in The Water
			 Dictionary, incorporated by reference in Section
			 601.115.