567—141.1 (455B) Hazardous waste management system: General.
	 141.1(1) The following is adopted by reference: 40 CFR Part 260 as amended through July 15, 1985.
Provided that “Underground source of drinking water (USDW)” means an aquifer or its portion:
	  a.   	 Which supplies any public water system, or
	  b.   	 Which contains a sufficient quantity of groundwater to supply a public water system, and
	 (1) 	 Currently supplies drinking water for human consumption, or
	 (2) 	 Contains fewer than 10,000 mg/l total dissolved solids.
	 141.1(2) Unless otherwise provided in this chapter, or unless the context would require otherwise, references in 40 CFR Parts 260 through 265 to “EPA,” the “EPA Administrator,” or the “EPA Regional Administrator” shall be deemed to be references to the “Iowa Department of Natural Resources.”