Indiana Administrative Code › Title 327 - WATER POLLUTION CONTROL DIVISION › Article 8 - PUBLIC WATER SUPPLY › Rule 2 - Drinking Water Standards › Section 2-1 - Definitions

Current through July 10, 2024
Authority: IC 13-13-5; IC 13-14-8-7; IC 13-14-9; IC 13-18-3;
				  IC 13-18-16
Affected: IC 13-11-2-140.8; IC 13-18
Sec. 1.
In addition to the definitions in IC 13-11-2 and
				  327
				  IAC 8-1, the following definitions apply throughout
				  this rule,
				  327 IAC
				  8-2.1,
				  327 IAC 8-2.3,
				  327 IAC
				  8-2.5, and
				  327 IAC
				  8-2.6:
(1)
				"Act" means the Safe Drinking Water Act (42 U.S.C.
				300f et seq.).
(2) "Action level" means the concentration of
				lead or copper in water specified in section 36(c) of this rule that
				determines, in some cases, the treatment requirements contained in sections 36
				through 47 of this rule that a water system is required to complete.
(3) "Adjustment program" means the addition
				of fluoride to drinking water by a PWS for the prevention of dental
				cavities.
(4) "Administrator" means
				the administrator of the U.S. EPA.
(5) "Bag filters" means pressure-driven
				separation devices that remove particulate matter larger than one (1)
				micrometer (µm) using an engineered porous filtration media. They are
				typically constructed of a nonrigid, fabric filtration media housed in a
				pressure vessel in which the direction of flow is from the inside of the bag to
				the outside.
(6) "Bank filtration"
				means a water treatment process that uses a well to recover surface water that
				has naturally infiltrated into ground water through a river bed or bank.
				Infiltration is typically enhanced by the hydraulic gradient imposed by a
				nearby pumping water supply or other well.
(7) "Best available technology" or "BAT"
				means best technology, treatment techniques, or other means that the
				commissioner finds are available, after examination for efficacy under field
				conditions, and not solely under laboratory conditions, and after taking cost
				into consideration. For the purpose of setting MCLs for synthetic organic
				chemicals, any BAT must be at least as effective as granular activated
				carbon.
(8) "Cartridge filters"
				means pressure-driven separation devices that remove particulate matter larger
				than one (1) micrometer (µm) using an engineered porous filtration media.
				They are typically constructed as rigid or semirigid, self-supporting filter
				elements housed in pressure vessels in which the flow is from the outside of
				the cartridge to the inside.
(9)
				"Coagulation" means a process using coagulant chemicals and mixing by which
				colloidal and suspended materials are destabilized and agglomerated into
				flocs.
(10) "Combined distribution
				system" means the interconnected distribution system consisting of the
				distribution system of wholesale systems and of the consecutive systems that
				receive finished water.
(11)
				"Commissioner" means the commissioner of the Indiana department of
				environmental management or the designated agent of the commissioner.
(12) "Community water system", "CWS",
				"community public water supply system", or "CPWSS" means a PWS that:
(A) serves at least fifteen (15) service
				connections used by year-round residents; or
(B) regularly serves at least twenty-five
				(25) year-round residents.